immorality
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C1 noun /ˌɪməˈrælɪti/

immorality

inmoralidad
Meaning
the quality of being immoral; behavior that violates accepted moral standards
Example
The community condemned the immorality of the corrupt officials.
La comunidad condenó la inmoralidad de los funcionarios corruptos.
C1 adjective /ɪnˈkɒmpɪtənt/

incompetent

incompetente
Meaning
Lacking the necessary ability or skills to do something successfully.
Example
He was fired because he was incompetent at his job.
Lo despidieron porque era incompetente en su trabajo.
C1 adjective /ɪnˈsɪdiəs/

insidious

insidioso
Meaning
Proceeding in a gradual, subtle way but with harmful effects.
Example
The insidious spread of misinformation can damage trust.
La propagación insidiosa de la desinformación puede dañar la confianza.
C1 adjective /ˌɪndɪˈstrʌktəbl/

indestructible

indestructible
Meaning
Impossible to destroy or break.
Example
The superhero's shield was said to be indestructible.
Se dijo que el escudo del superhéroe era indestructible.
C1 noun /ˈɪnˌmeɪt/

inmate

interno
Meaning
a person confined to an institution such as a prison or hospital
Example
The prison has over a thousand inmates.
La prisión tiene más de mil internos.
C1 adjective /ˈɪnsjələr/

insular

limitado, relacionado con una isla
Meaning
Narrow-minded, isolated, or relating to an island.
Example
The community was criticized for its insular attitudes toward outsiders.
La comunidad fue criticada por sus actitudes insulares hacia los forasteros.
C1 adjective /ɪnˈhɛrənt/

inherent

inherente
Meaning
Existing in something as a natural, permanent, or essential quality.
Example
There are inherent risks in extreme sports.
Existen riesgos inherentes en los deportes extremos.
C1 adjective /ɪnˈsɛnsəbl/

insensible

insensible
Meaning
Unconscious; unaware of or indifferent to something.
Example
He was insensible to the cold as he lay in the snow.
Él estaba insensible al frío mientras yacía en la nieve.
C1 adjective /ˈɪnbɔːrn/

Inborn

innato; congénito; inherente
Meaning
existing from birth; natural; inherent
Example
She has an inborn talent for music.
Ella tiene un talento innato para la música.
C1 verb /ɪnˈkrɪmɪˌneɪt/

incriminate

incriminar
Meaning
to make someone appear guilty of a crime or wrongdoing
Example
The new evidence could incriminate the suspect in the robbery case.
La nueva evidencia podría incriminar al sospechoso en el caso de robo.
C1 verb /ɪnˈskraɪb/

inscribe

grabar
Meaning
to write or carve words or symbols on a surface
Example
They inscribed her name on the trophy.
Ellos grabaron su nombre en el trofeo.
C1 adjective /ˌɪnɑːrˈtɪkjʊlət/

inarticulate

inarticulado
Meaning
Unable to express oneself clearly or effectively in speech or writing.
Example
She became inarticulate with emotion during the speech.
Ella se volvió inarticulada con emoción durante el discurso.
C1 noun /ɪnˈɛk.wɪ.ti/

inequity

inequidad
Meaning
Lack of fairness or justice; unequal distribution or treatment.
Example
Social inequity continues to be a global issue.
La inequidad social sigue siendo un problema global.
C1 noun /ˌɪndɪˈdʒɛstʃən/

indigestion

indigestión
Meaning
Discomfort or pain in the stomach associated with difficulty in digesting food.
Example
He avoided spicy food because it often gave him indigestion.
Él evitó la comida picante porque a menudo le provocaba indigestión.
C1 adjective /ɪnˈsɒlvənt/

insolvent

insolvente
Meaning
unable to pay debts owed
Example
The insolvent firm could not meet its financial obligations.
La empresa insolvente no pudo cumplir con sus obligaciones financieras.
C1 adverb ɪnˈtrɪn.zɪ.kli

intrinsically

intrínsecamente
Meaning
In a way that is naturally or inherently part of something's essential nature.
Example
Some people are intrinsically motivated to learn.
Algunas personas están intrínsecamente motivadas para aprender.
C1 adjective /ɪnˈsɪstənt/

insistent

insistente
Meaning
demanding something firmly and refusing to accept no
Example
The child was insistent on getting a new toy.
El niño era insistente en conseguir un nuevo juguete.
C1 adjective /ɪnˈkwɪzɪtɪv/

inquisitive

inquisitivo
Meaning
Curious or eager to learn and ask questions.
Example
The inquisitive child asked endless questions about the stars.
El niño inquisitivo hizo preguntas interminables sobre las estrellas.
C1 adjective /ˈɪrɪtəbl/

irritable

irritable
Meaning
easily annoyed or made angry
Example
She became irritable after working long hours without rest.
Ella se volvió irritable después de trabajar muchas horas sin descanso.
C1 adverb /ɪnˈvɜːrs.li/

Inversely

inversamente; en sentido opuesto
Meaning
in a way that is opposite or contrary; in reverse order or manner
Example
The price of goods is inversely related to their availability in the market.
El precio de los productos está inversamente relacionado con su disponibilidad en el mercado.
C1 adjective /ˌɪndɪˈfɛnsəbl̩/

indefensible

indefendible
Meaning
not able to be protected or justified
Example
The minister’s remarks were considered indefensible by the public.
Los comentarios del ministro fueron considerados indefendibles por el público.
C1 noun ɪnˈsɛpʃən

inception

inicio
Meaning
The establishment or starting point of an institution or activity.
Example
The inception of the company marked a new era in the industry.
La incepción de la empresa marcó una nueva era en la industria.
C1 verb /ˌɪn.trəˈspekt/

introspect

introspectar
Meaning
To examine one's own thoughts, feelings, or mental state.
Example
He often introspects before making important decisions.
Él a menudo se introspecta antes de tomar decisiones importantes.
C1 noun /ɪnˈfjuːʒən/

infusion

infusión
Meaning
the act of introducing something into another; a drink made by steeping leaves or herbs in liquid
Example
She prepared a calming infusion of chamomile tea.
Ella preparó una infusión calmante de té de manzanilla.
C1 adjective ɪnˈsaɪ.sɪv

incisive

incisivo
Meaning
Intelligently analytical and clear-thinking; showing clear thought and good understanding of what is important.
Example
His incisive comments revealed the core issues.
Sus comentarios incisivos revelaron los problemas clave.
C1 noun /ˌɪnfɪˈdɛləti/

infidelity

infidelidad
Meaning
the act of being unfaithful to a spouse or partner
Example
Their marriage ended due to his infidelity.
Su matrimonio terminó debido a su infidelidad.
C1 verb /ˌɪntərˈsɛpt/

intercept

interceptar
Meaning
to stop, catch, or seize something on its way from one place to another
Example
The police intercepted the stolen car before it crossed the border.
La policía interceptó el coche robado antes de que cruzara la frontera.
C1 noun /ɪnˌtɪmɪˈdeɪʃən/

intimidation

intimidación
Meaning
The action of frightening or threatening someone to make them do something.
Example
The workers reported cases of intimidation by the management.
Los trabajadores informaron casos de intimidación por parte de la administración.
C1 verb /ˌɪnstɪˈtjuːʃənəlaɪz/

institutionalize

institucionalizar
Meaning
to establish something as a formal institution, custom, or practice
Example
The government seeks to institutionalize environmental protection.
El gobierno busca institucionalizar la protección ambiental.
C1 noun /ˌɪntərˈmiːdiˌɛri/

intermediary

intermediario
Meaning
A person who acts as a link between people in order to try to bring about an agreement; a mediator.
Example
The diplomat served as an intermediary between the two conflicting nations.
El diplomático actuó como intermediario entre las dos naciones en conflicto.
C1 noun /ˈɪŋ.krə.mənt/

Increment

aumento
Meaning
an increase or addition, especially one of a series on a fixed scale; a regular increase in salary
Example
He received an annual increment of five percent in his salary this year.
Recibió un aumento anual del cinco por ciento en su salario este año.
C1 noun /ˈɪŋklɪŋ/

inkling

presentimiento
Meaning
A slight idea, hint, or suspicion about something.
Example
She had an inkling that he was planning a surprise.
Ella tenía una ligera sospecha de que él estaba planeando una sorpresa.
C1 adjective /ɪnˈveə.ri.ə.bəl/

Invariable

invariable; constante; siempre igual
Meaning
never changing; constant; always the same
Example
His invariable routine includes morning exercise and coffee.
Su rutina invariable incluye ejercicio por la mañana y café.
C1 adjective ɪˈluː.sər.i

illusory

ilusorio
Meaning
Based on illusion; not real although seeming to be.
Example
His sense of security was entirely illusory.
Su sensación de seguridad era completamente ilusoria.
C1 verb /ɪnˈvælɪdeɪt/

invalidate

invalidar
Meaning
To make something not valid or legally acceptable.
Example
The new evidence may invalidate the previous ruling.
La nueva evidencia puede invalidar el fallo anterior.
C1 verb /ˌɪntəˈsɛkt/

intersect

intersectar
Meaning
to cross or pass through each other
Example
The two roads intersect at the city center.
Los dos caminos se intersectan en el centro de la ciudad.
C1 adjective /ɪmˈpɜːrsənl/

impersonal

impersonal
Meaning
not influenced by, showing, or involving personal feelings; lacking human warmth or emotion
Example
The letter was written in a very impersonal style.
La carta fue escrita en un estilo muy impersonal.
C1 adjective /ɪˈlʌstriəs/

illustrious

ilustre
Meaning
Well known, respected, and admired for past achievements.
Example
She had an illustrious career in medicine.
Tuvo una carrera ilustre en la medicina.
C1 adjective /ɪˈluː.sɪv/

Illusive

ilusorio; que parece existir pero no es real; engañoso
Meaning
deceptive; appearing to exist but not real; misleading
Example
The promise of easy money proved to be illusive and misleading.
La promesa de dinero fácil resultó ser ilusoria y engañosa.
C1 adjective /ɪnˈvɪnsəbl/

invincible

invencible
Meaning
too powerful to be defeated or overcome
Example
The team seemed invincible after winning ten matches in a row.
El equipo parecía invencible después de ganar diez partidos consecutivos.
C1 noun ˌɪnsjʊˈleɪʃən

insulation

aislamiento
Meaning
Material used to prevent heat, sound, or electricity from being transmitted from one area to another.
Example
Insulation of food storage areas can prevent pests from entering.
El aislamiento de las áreas de almacenamiento de alimentos puede evitar que entren plagas.
C1 noun ɪnˌten.sɪ.fɪˈkeɪ.ʃən

intensification

intensificación
Meaning
The process of becoming or making something more intense or extreme.
Example
The intensification of climate change requires urgent action.
La intensificación del cambio climático requiere una acción urgente.
C1 noun /ɪnˈsɜːʃən/

insertion

inserción
Meaning
the action of inserting something into something else
Example
The insertion of the new data was completed successfully.
La inserción de los nuevos datos se completó con éxito.
C1 adjective /ɪmˈpɛn.ɪ.trə.bəl/

impenetrable

impenetrable
Meaning
Impossible to pass through or enter; impossible to understand.
Example
The dense forest was nearly impenetrable.
El bosque denso era casi impenetrable.
C1 adjective /ɪmˈpɛndɪŋ/

impending

inminente
Meaning
about to happen soon, usually something unpleasant or threatening
Example
The villagers were worried about the impending flood.
Los aldeanos estaban preocupados por la inundación inminente.
C1 noun /ˌɪməˈtjʊərəti/

immaturity

inmadurez
Meaning
the state of not being fully developed emotionally, mentally, or physically; lack of maturity
Example
His immaturity made it difficult for him to handle responsibility.
Su inmadurez le dificultó manejar la responsabilidad.
C1 verb ɪˈmɜːrs

immerse

sumergir
Meaning
To involve oneself deeply in a particular activity or interest; to surround completely.
Example
Immerse yourself in the new language.
Sumérgete en el nuevo idioma.
C1 adjective /ˌɪn.səˈbɔːr.dɪ.nət/

insubordinate

insubordinado
Meaning
Defiant of authority; disobedient to orders.
Example
The insubordinate employee refused to follow the manager's instructions.
El empleado insubordinado se negó a seguir las instrucciones del gerente.
C1 noun /ˌɪndɪɡˈneɪʃən/

indignation

indignación
Meaning
Strong displeasure or anger caused by something unjust, offensive, or insulting.
Example
Public indignation grew after the unfair verdict.
La indignación pública creció después del veredicto injusto.
C1 adjective /ˌɪndɪˈskriːt/

indiscreet

imprudente
Meaning
Not careful in what one says or does, likely to reveal secrets or offend.
Example
It was indiscreet of him to mention the plan in public.
Fue imprudente de su parte mencionar el plan en público.
C1 adjective /ɪmˈprɒmp.tjuː/

impromptu

imprevisto
Meaning
Done without being planned, organized, or rehearsed; spontaneous.
Example
He gave an impromptu speech at the event.
Él dio un discurso improvisado en el evento.
C1 noun /ɪˌreɡjəˈlærɪti/

irregularity

irregularidad
Meaning
lack of regularity or consistency; a deviation from what is normal, expected, or orderly
Example
The audit revealed several financial irregularities in the company’s records.
La auditoría reveló varias irregularidades financieras en los registros de la empresa.
C1 adjective /ɪnˈtrɛpɪd/

intrepid

intrépido
Meaning
fearless and adventurous, often used humorously
Example
The intrepid traveler explored the jungle alone.
El intrépido viajero exploró la jungla solo.
C1 noun /ɪnˈædɪkwəsi/

inadequacy

insuficiencia
Meaning
lack of sufficient ability, quality, or strength; a feeling of not being good enough
Example
She struggled with feelings of inadequacy at work despite her strong qualifications.
Luchaba con sentimientos de insuficiencia en el trabajo a pesar de sus sólidas calificaciones.
C1 noun ˌɪn.toʊˈneɪ.ʃən

intonation

entonación
Meaning
The rise and fall of tone in speech and pronunciation.
Example
Proper intonation enhances the clarity of a speech.
Una buena entonación mejora la claridad de un discurso.
C1 noun /ˈɪnlɛt/

inlet

entrada
Meaning
A small arm of the sea, a lake, or a river; an opening or passage for entry.
Example
The boat entered a narrow inlet along the coast.
El bote entró en una entrada estrecha a lo largo de la costa.
C1 adjective; noun /ɪˈmɔːrtl/

immortal

inmortal
Meaning
living forever; never dying; lasting forever in fame or memory
Example
Legends often describe heroes as immortal beings who never die.
Las leyendas describen a los héroes como inmortales.
C1 noun /ɪˌluːmɪˈneɪʃən/

illumination

iluminación
Meaning
the act of lighting something or making something clear
Example
The street was filled with bright illumination from the lamps.
La calle estaba llena de una iluminacion brillante proveniente de las lamparas.
C1 adjective /ˈɪmpjəd(ə)nt/

impudent

descarado, insolente
Meaning
not showing due respect for another person; rude
Example
The impudent child talked back to the teacher.
El niño descarado le contestó al maestro.
C1 noun ɪnˌɛv.ɪ.təˈbɪl.ɪ.ti

inevitability

inevitabilidad
Meaning
The quality of being certain to happen and impossible to avoid or prevent.
Example
The inevitability of change is a part of life.
La inevitabilidad del cambio es parte de la vida.
C1 noun /ˌɪn.trəˈspek.ʃən/

introspection

introspección
Meaning
The examination or observation of one's own mental and emotional processes; self-reflection.
Example
Through introspection, she gained insight into her emotions.
A través de la introspección, obtuvo una visión profunda de sus emociones.
C1 adjective ˌɪn.təˈdɪs.ɪ.plɪ.nər.i

interdisciplinary

interdisciplinario
Meaning
Relating to more than one branch of knowledge.
Example
The interdisciplinary approach in education enhances problem-solving skills.
El enfoque interdisciplinario en la educación mejora las habilidades para resolver problemas.
C1 adjective /ɪnˈtɛlɪdʒəbl/

intelligible

Meaning
Able to be understood; clear enough to be comprehended.
Example
Her speech was barely intelligible over the noise.
C1 noun /ˌɪnkəmˈpliːtnəs/

incompleteness

incompletitud
Meaning
the state of not being complete or whole; lack of necessary parts or fullness
Example
The incompleteness of the report caused delays in the project.
La incompletitud del informe causó retrasos en el proyecto.
C1 noun /aɪˈdiː.ə.lɪ.zəm/

Idealism

Idealismo
Meaning
the pursuit of high principles and noble goals; unrealistic pursuit of perfection
Example
His youthful idealism motivated him to join various social justice movements.
Su idealismo juvenil lo motivó a unirse a varios movimientos de justicia social.
C1 adjective /ɪˈnɜːrt/

inert

inactivo
Meaning
lacking the ability or strength to move or act; chemically inactive
Example
The patient remained inert on the bed.
El paciente permaneció inactivo en la cama.
C1 adjective /ɪnˈkrɛdjələs/

incredulous

incrédulo
Meaning
unwilling or unable to believe something
Example
He gave her an incredulous look when she claimed she could fly.
Le lanzó una mirada incrédula cuando afirmó que podría volar.
C1 noun /ˈɪd.i.əm/

idiom

modismo
Meaning
A group of words whose meaning is different from the meanings of the individual words.
Example
The idiom 'break the ice' means to start a conversation in a friendly way.
El modismo 'romper el hielo' significa comenzar una conversación de manera amistosa.
C1 verb /ɪmˈpɜːrsəneɪt/

impersonate

fingir ser alguien
Meaning
to pretend to be another person in order to entertain or deceive
Example
He was arrested for trying to impersonate a police officer.
Fue arrestado por intentar hacerse pasar por un oficial de policía.
C1 adjective /ɪmˈpoʊzɪŋ/

imposing

imponente
Meaning
having an appearance that is grand, impressive, or commanding
Example
The castle is an imposing structure overlooking the valley.
El castillo es una estructura imponente que domina el valle.
C1 adjective /ˌɪndɪˈspjuːtəbəl/

Indisputable

indiscutible; innegable; cierto
Meaning
impossible to deny or argue against; undeniable; certain
Example
The evidence against him was indisputable.
La evidencia en su contra era indiscutible.
C1 adjective /ɪˈnænɪmət/

inanimate

objeto inanimado
Meaning
not alive, especially not in the manner of animals and humans; lifeless
Example
The museum was full of inanimate objects from ancient times.
El museo estaba lleno de objetos inanimados de tiempos antiguos.
C1 verb /ɪˈluːmɪneɪt/

illuminate

iluminar
Meaning
To light up or make something clearer.
Example
Streetlights illuminate the road at night.
Las farolas iluminan la carretera de noche.
C1 adjective /ɪnˈedəbəl/

Inedible

incomible
Meaning
not suitable or safe for eating; not edible
Example
The mushrooms were poisonous and completely inedible.
Los hongos eran venenosos y completamente incomestibles.
C1 adjective ˌɪm.pəˈsɛp.tɪ.bəl

imperceptible

imperceptible
Meaning
So subtle or gradual that it is difficult to notice or perceive
Example
The changes in his behavior were imperceptible at first.
Los cambios en su comportamiento eran imperceptibles al principio.
C1 verb ɪmˈbjuː

Imbue

Mezclar una idea o sentimiento profundamente en la mente de alguien
Meaning
Mixing some idea or feeling deeply into someone's mind
Example
The teacher tried to imbue students with a love for learning.
El profesor intentó inculcar a los estudiantes un amor por el aprendizaje.
C1 noun /ɪnˈtruː.ʒən/

intrusion

intrusión no autorizada
Meaning
Unauthorized entry into a system or place without permission
Example
The company detected an intrusion in its server.
La empresa detectó una intrusión en su servidor.
C1 adverb /ˈɪnwərdli/

inwardly

por dentro
Meaning
In the mind or spirit; not outwardly visible.
Example
She smiled outwardly but inwardly she was worried.
Ella sonrió por fuera, pero por dentro estaba preocupada.
C1 noun /ˌɪmɔːrˈtæləti/

immortality

inmortalidad
Meaning
the state of living forever; eternal life or lasting fame beyond death
Example
Many ancient cultures believed that heroes could achieve immortality through great deeds.
Muchas culturas antiguas creían que los héroes podían alcanzar la inmortalidad mediante grandes hazañas.
C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

incubadora
Meaning
a device or environment that provides suitable conditions for eggs, cells, or infants to develop
Example
The premature baby was placed in an incubator for care.
El bebé prematuro fue colocado en una incubadora para su cuidado.
C1 verb /aɪˈdiː.ə.laɪz/

idealize

idealizar
Meaning
To regard or represent something as perfect or better than it really is.
Example
Children often idealize their parents.
Los niños a menudo idealizan a sus padres.
C1 adjective /ˈɪnsələnt/

insolent

insolente, arrogante
Meaning
showing a rude and arrogant lack of respect
Example
The insolent student refused to follow the teacher's instructions.
El estudiante insolente se negó a seguir las instrucciones del maestro.
C1 noun ˌɪndɪˈspensəbl̩ ˈkɒmpɪtənsi

indispensable competency

competencia indispensable
Meaning
Essential skill or ability that cannot be done without; a crucial capability that is absolutely necessary.
Example
Digital literacy is an indispensable competency in the 21st century.
La alfabetización digital es una competencia indispensable en el siglo XXI.
C1 adjective /ɪnˈstɪŋk.tɪv/

instinctive

instintivo, natural, automático
Meaning
Based on instinct; done without conscious thought; natural and automatic.
Example
His instinctive reaction saved his life.
Su reacción instintiva le salvó la vida.
C1 adjective ɪnɪɡˈzɔːstɪbəl

inexhaustible

inagotable
Meaning
Unable to be used up or worn out; limitless.
Example
His inexhaustible energy allowed him to work tirelessly on his projects.
Su energía inagotable le permitió trabajar incansablemente en sus proyectos.
C1 adjective /ɪmˈplɔːzəbl/

implausible

implausible
Meaning
Not seeming reasonable or probable; unlikely to be true.
Example
The story she told was so implausible that no one believed her.
La historia que ella contó era tan implausible que nadie le creyó.
C1 verb /ɪnˈtɒksɪkeɪt/

intoxicate

felicidad
Meaning
to make someone lose control of their faculties or behavior due to alcohol or drugs
Example
The strong drink quickly intoxicated him.
No pudo esconder su felicidad cuando recibió el premio.
C1 adjective ˌɪdiəsɪnˈkrætɪk

idiosyncratic

peculiar e individual
Meaning
Relating to idiosyncrasy; peculiar or individual.
Example
His idiosyncratic behavior set him apart from his colleagues.
Su comportamiento idiosincrático lo diferenciaba de sus compañeros.
C1 verb /ˈɪnsjuleɪt/

insulate

aislar
Meaning
To protect something by covering it, especially to prevent heat, sound, or electricity from escaping or entering.
Example
The house was insulated to reduce heating costs.
La casa fue aislada para reducir los costos de calefacción.
C1 noun ˈɪn.fər.əns

inference

inferencia
Meaning
A conclusion reached on the basis of evidence and reasoning; logical deduction.
Example
Scientists make inferences based on experimental data.
Los científicos hacen inferencias basadas en datos experimentales.
C1 noun /ɪmˈprɪzənmənt/

imprisonment

encarcelamiento
Meaning
the act of putting someone in prison; the state of being confined as punishment
Example
He faced imprisonment for violating the court order.
Se enfrentó al encarcelamiento por violar la orden judicial.
C1 noun /ˈɪmɪdʒəri/

imagery

imaginería
Meaning
visually descriptive or figurative language, especially in a literary work
Example
The poet's use of imagery brought the scene to life.
El uso de imaginería por el poeta dio vida a la escena.
C1 noun /ɪnˈdɪɡ.nə.ti/

Indignity

indignidad; humillación; deshonra;
Meaning
treatment or circumstances that cause one to feel shame or loss of dignity; humiliation
Example
She refused to suffer the indignity of being searched without proper cause.
Ella se negó a sufrir la indignidad de ser registrada sin causa justificada.
C1 verb /ɪnˈvɜːrt/

invert

invertir
Meaning
To turn something upside down or in the opposite position, order, or direction.
Example
He inverted the glass to let the water drain out.
Él invirtió el vaso para dejar que el agua se drenara.
C1 noun ɪmˈpɛə(r)mənt

impairment

daño, discapacidad
Meaning
The state of being damaged or weakened; a disability or handicap.
Example
Hearing impairment can be caused by long-term exposure to loud noise.
La pérdida auditiva puede ser causada por la exposición prolongada a ruidos fuertes.
C1 verb /ɪnˈklaɪn/

incline

inclinarse
Meaning
to feel willing or favorably disposed toward something; to bend or tilt
Example
She is inclined to agree with the proposal.
Ella está inclinada a estar de acuerdo con la propuesta.
C1 noun /ˌɪnkənˈsɪstənsi/

inconsistency

inconsistencia
Meaning
The quality of being contradictory, irregular, or not staying the same.
Example
There is an inconsistency between his words and actions.
Hay una inconsistencia entre sus palabras y acciones.
C1 adjective /ˌɪnədˈmɪsəbl̩/

inadmissible

inadmisible
Meaning
Not allowed, especially as evidence in a court of law.
Example
The judge ruled the evidence inadmissible.
El juez dictaminó que la evidencia era inadmisible.
C1 noun /ɪˈmiːdiəsi/

immediacy

inmediación, urgencia
Meaning
The quality of bringing one into direct and instant involvement with something, giving rise to a sense of urgency or excitement.
Example
The immediacy of digital communication has reshaped business operations.
La inmediatez de la comunicación digital ha transformado las operaciones comerciales.
C1 adjective /ˌɪnstənˈteɪniəs/

instantaneous

instantáneo
Meaning
Happening immediately, without any delay.
Example
The change in temperature was almost instantaneous.
El cambio de temperatura fue casi instantáneo.
C1 noun ˌɪn.tuˈɪʃ.ən

intuition

intuición
Meaning
The ability to understand something immediately, without the need for conscious reasoning.
Example
Her intuition told her something was wrong.
Su intuición le dijo que algo estaba mal.
C1 adjective /ɪnˈæk.tɪv/

Inactive

inactivo
Meaning
not active; not working; dormant; idle
Example
The volcano has been inactive for over a century.
El volcán ha estado inactivo durante más de un siglo.
C1 adjective /ˈɪntrɪkət/

intricate

intrincado
Meaning
very detailed, complex, and difficult to understand
Example
The artist created an intricate pattern on the wall.
El artista creó un patrón intrincado en la pared.
C1 noun /ˌɪrɪˌspɒnsəˈbɪləti/

irresponsibility

irresponsabilidad
Meaning
lack of responsibility or accountability; failure to act in a reliable or sensible way
Example
The accident was caused by his irresponsibility at work.
El accidente fue causado por su irresponsabilidad en el trabajo.
C1 adjective /ˈaɪərnˌklæd/

ironclad

inquebrantable
Meaning
impossible to change, break, or dispute; very strong and firm
Example
The company had an ironclad contract with its suppliers.
La empresa tenía un contrato inquebrantable con sus proveedores.
C1 verb /ɪnˈtɪmɪdeɪt/

intimidate

intimidar
Meaning
To frighten or overawe someone, especially to make them do what one wants.
Example
The bully tried to intimidate the smaller kids.
El matón intentó intimidar a los niños más pequeños.
C1 verb /ɪnˈdʌkt/

induct

admitir formalmente a alguien en una posición, organización o cargo
Meaning
to formally admit someone into a position, organization, or office
Example
She was inducted into the university's honor society.
Ella fue admitida en la sociedad de honor de la universidad.
C1 noun ˌɪnfɛsˈteɪʃən

infestation

infestación, gran número de insectos o animales en un lugar
Meaning
The presence of an unusually large number of insects or animals in a place, causing damage or disease.
Example
The infestation of ants in the kitchen led to immediate pest control measures.
La infestación de hormigas en la cocina llevó a medidas inmediatas de control de plagas.
C1 adjective /ɪˈneɪn/

inane

insensato, tonto
Meaning
lacking sense, meaning, or significance; silly or pointless
Example
The movie was criticized for its inane dialogue.
La película fue criticada por sus diálogos insensatos.
C1 verb ɪˈnɪʃɪeɪtɪd

initiated

iniciado
Meaning
Caused a process or action to begin; started something.
Example
The project was initiated to enhance marine biodiversity.
El proyecto fue iniciado para mejorar la biodiversidad marina.
C1 verb /ˈɪnstɪˌɡeɪt/

instigate

incitar
Meaning
To bring about or initiate an action, often something negative.
Example
He was accused of instigating the riot.
Fue acusado de incitar el motín.
C1 verb /ɪmˈploʊd/

implode

implosionar
Meaning
To collapse or burst inward violently.
Example
The old building imploded during the demolition.
El viejo edificio implosionó durante la demolición.
C1 noun /ɪnˈhɛrɪtər/

inheritor

heredero
Meaning
a person who receives money, property, or a title when someone dies
Example
She became the inheritor of her family's estate.
Ella se convirtió en la heredera de la propiedad de su familia.
C1 adjective /ɪˈnuːmərəbəl/

Innumerable

innumerable; incontable; infinito
Meaning
too many to be counted; countless; infinite in number
Example
There are innumerable stars in the night sky that we cannot see with our naked eyes.
Hay innumerables estrellas en el cielo nocturno que no podemos ver con nuestros ojos desnudos.
C1 verb /ɪnˈkɑːrsəreɪt/

incarcerate

encarcelar
Meaning
to imprison or confine someone
Example
The authorities incarcerated the criminal after the trial.
Las autoridades encarcelaron al criminal después del juicio.
C1 adjective /ɪnˈɛlɪdʒəbəl/

Ineligible

inelegible; no apto; no cualificado
Meaning
not qualified or entitled to participate or be chosen; unsuitable
Example
Students with poor grades are ineligible for the scholarship program.
Los estudiantes con calificaciones bajas no son elegibles para el programa de becas.
C1 noun /ɪnˈdjuːsmənt/

inducement

inducido
Meaning
something that persuades or encourages someone to do something
Example
The company offered a bonus as an inducement to employees.
La empresa ofreció un bono como incentivo para los empleados.
C1 noun /ˌɪntərˈdʒɛkʃən/

interjection

interjección
Meaning
a word or phrase used to express sudden emotion or reaction, often standing alone
Example
Words like 'wow' and 'ouch' are common interjections in English.
Palabras como 'wow' y 'ouch' son interjecciones comunes en inglés.
C1 verb /ɪmˈpiːtʃ/

impeach

impeachar
Meaning
To charge a public official with misconduct while in office.
Example
The parliament voted to impeach the president.
El parlamento votó para impugnar al presidente.
C1 adjective ˈɪn.tər.ɪm

interim

interino
Meaning
In or for the intervening period; provisional or temporary.
Example
Interim governments manage transitional phases.
Los gobiernos interinos gestionan fases de transición.
C1 noun /ˈɪn.tə.mə.si/

Intimacy

intimidad; cercanía
Meaning
close familiarity or friendship; closeness; a private cozy atmosphere
Example
The couple valued the emotional intimacy they shared more than material possessions.
La pareja valoró más la intimidad emocional que compartieron que las posesiones materiales.