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.
B2 verb /ɪnˈsʌlt/

insult

insultar
Meaning
to speak or act in a way that hurts someone's feelings or shows disrespect
Example
He felt insulted by her rude comments.
Él se sintió insultado por sus comentarios groseros.
A2 noun /ˈɪnfoʊ/

info

información
Meaning
information; knowledge or facts about something or someone
Example
She gave me all the info I needed for the meeting.
Ella me dio toda la información que necesitaba para la reunión.
C1 adjective ɪˈneɪt

Innate

innato o natural
Meaning
Existing from birth or natural
Example
She has an innate talent for music.
Ella tiene un talento innato para la música.
C2 noun /ˌɪndɛnˈteɪʃən/

indentation

sangría
Meaning
A space left at the beginning of a line of text; a notch or deep recess on a surface.
Example
The teacher asked the students to use proper indentation in their essays.
El profesor pidió a los estudiantes que usaran una sangría adecuada en sus ensayos.
C1 noun /aɪˈtɪnərɛri/

itinerary

itinerario
Meaning
A planned route or schedule of a journey or trip.
Example
The travel agent gave us a detailed itinerary for our vacation.
El agente de viajes nos dio un itinerario detallado para nuestras vacaciones.
B1 verb /ˌɪntərˈækt/

interact

interactuar
Meaning
to communicate or work together with someone or something
Example
Students interact with teachers during class discussions.
Los estudiantes interactúan con los profesores durante las discusiones en clase.
B2 noun /ˌɪntərˈfɪərəns/

interference

interferencia
Meaning
the action of interfering with something
Example
The radio signal was disrupted due to interference from nearby electronics.
La señal de radio fue interrumpida debido a la interferencia de dispositivos electrónicos cercanos.
C2 adjective /ɪmˈpɔːrtʃənət/

importunate

importuno
Meaning
Persistent to the point of annoyance or intrusion
Example
The importunate salesman kept calling despite repeated refusals.
El vendedor importuno siguió llamando a pesar de las repetidas negativas.
B2 noun ɪˈlɪtərəsi

illiteracy

analfabetismo
Meaning
The inability to read and write; lack of education or knowledge in a particular area.
Example
Illiteracy often leads to poverty and unemployment.
El analfabetismo a menudo conduce a la pobreza y el desempleo.
B1 noun aɪˈdɛntɪti

identity

identidad
Meaning
The fact of being who or what a person or thing is; the characteristics determining who or what a person or thing is.
Example
The day reinforces our national identity.
El día refuerza nuestra identidad nacional.
C2 noun /ˌɪntərˈsɛʃən/

intercession

intercesión
Meaning
the act of intervening or pleading on behalf of another person
Example
The prisoner was released due to the intercession of influential leaders.
El prisionero fue liberado gracias a la intercesión de líderes influyentes.
C2 noun /ˌɪnvəˈluːʃən/

involution

involución
Meaning
a complicated or intricate form or state; in biology, the shrinking of an organ after its function has finished
Example
The story was full of involution, making it hard to follow.
La historia estaba llena de involución, lo que hacía difícil de seguir.
C2 noun /ˈaɪdlər/

idler

holgazán
Meaning
A person who avoids work or spends time lazily.
Example
He was known as an idler who wasted his days.
Él era conocido como un holgazán que desperdiciaba sus días.
C1 adjective /ɪˈrɛvərənt/

irreverent

irreverente
Meaning
showing a lack of respect for people or things that are usually respected
Example
The comedian’s irreverent jokes offended some of the audience.
Los chistes irreverentes del comediante ofendieron a algunos de la audiencia.
C2 adjective /ɪmˈprɛɡnəbl̩/

impregnable

impenetrable
Meaning
Unable to be captured, broken into, or defeated.
Example
The fortress was considered impregnable by the enemy.
La fortaleza fue considerada impenetrable por el enemigo.
B2 noun /ˈɪmɪɡrənt/

immigrant

inmigrante
Meaning
a person who comes to live permanently in a foreign country
Example
The city has welcomed many new immigrants this year.
La ciudad ha dado la bienvenida a muchos nuevos inmigrantes este año.
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.
C2 noun /ɪnˈtɛnʃən/

intension

contenido interno
Meaning
The internal content of a concept; the set of attributes implied by a word or phrase.
Example
The intension of the word 'dog' includes being a mammal and domesticated.
La intensión de la palabra 'perro' incluye ser un mamífero y ser domesticado.
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 /ˈɪm.pæs/

impasse

impasse
Meaning
A situation where no progress is possible.
Example
The negotiations reached an impasse, delaying the agreement.
Las negociaciones llegaron a un impasse, retrasando el acuerdo.
B1 verb /ɪnˈvɑːlv/

involve

involucrar
Meaning
to include as a necessary part, or to engage someone in an activity
Example
The project will involve several departments working together.
El proyecto involucrará varios departamentos trabajando juntos.
C2 verb /ɪnˈɡreɪʃiˌeɪt/

ingratiate

ganarse el favor de
Meaning
To gain favor or approval by deliberate effort, often in a flattering way.
Example
She tried to ingratiate herself with her boss by complimenting him often.
Ella intentó ingraciarse con su jefe al elogiarlo con frecuencia.
B2 noun /ˈɪntərvəl/

interval

intervalo
Meaning
a period of time between two events or points; a pause or break in activity
Example
There was a short interval between the two performances.
Hubo un breve intervalo entre las dos funciones.
C2 noun /ɪmˈbroʊlioʊ/

imbroglio

embrollo
Meaning
An extremely confused, complicated, or embarrassing situation.
Example
The political imbroglio lasted for months without resolution.
El embrollo político duró meses sin resolución.
C1 adjective /ɪˈnɛpt/

inept

inepto
Meaning
lacking skill or ability; clumsy or incompetent
Example
His inept handling of the situation made it worse.
Su manejo inepto de la situación lo empeoró.
C1 noun/verb /ˈɪnsɛns/

incense

incienso / enfurecer
Meaning
a substance burned for its sweet smell (noun); to make very angry (verb)
Example
The smell of incense filled the temple, but his rude words incensed her.
El olor del incienso llenó el templo, pero sus palabras groseras la enfurecieron.
C2 adjective /ˌɪnkəˈməʊdiəs/

incommodious

incómodo
Meaning
Uncomfortably small, cramped, or inconvenient.
Example
We had to stay in an incommodious room during the trip.
Tuvimos que quedarnos en una habitación incómoda durante el viaje.
B2 adjective /ˌɪd.iˈɒt.ɪk/

Idiotic

idiota
Meaning
extremely stupid; foolish; senseless
Example
His idiotic behavior embarrassed everyone at the meeting.
Su comportamiento idiota avergonzó a todos en la reunión.
A2 noun /ˈɪm.ɪdʒ/

Image

imagen; figura; representación
Meaning
a representation of the external form of a person or thing in art; a mental picture or impression
Example
The company worked hard to improve its public image after the scandal.
La empresa trabajó duro para mejorar su imagen pública después del escándalo.
C2 noun /ˌɪkθiˈɒlədʒi/

ichthyology

icthología
Meaning
The branch of zoology that deals with fish.
Example
He pursued a degree in ichthyology at the university.
Obtuvo un título en ictiología en la universidad.
C1 adjective /ɪˈrɛvəkəbl/

irrevocable

irreversible
Meaning
Not able to be revoked, changed, or undone.
Example
She made an irrevocable decision to leave the company.
Ella tomó una decisión irreversible de dejar la empresa.
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.
C2 adjective /ˌɪndɪˈsɒljʊbl/

indissoluble

Indisoluble
Meaning
Unable to be destroyed, broken, or dissolved.
Example
Marriage was once considered an indissoluble bond.
El matrimonio alguna vez fue considerado un vínculo indisoluble.
C2 adjective ˌɪn.ɪ.fɪˈkeɪ.ʃəs

inefficacious

ineficaz
Meaning
Not producing any or the desired effect; ineffective.
Example
The treatment was inefficacious in curing the disease.
El tratamiento fue ineficaz en curar la enfermedad.
C1 adjective /ɪnˈvɜːs/

Inverse

inverso; opuesto
Meaning
opposite in order, nature, or effect; reversed
Example
There is an inverse relationship between price and demand.
Existe una relación inversa entre el precio y la demanda.
C2 noun /ˈaɪ.ərn.wʊd/

Ironwood

madera de hierro
Meaning
a hard, dense wood from various trees; also the tree itself that produces small flowers
Example
The ironwood tree blooms with tiny white flowers.
El árbol de madera de hierro florece con pequeñas flores blancas.
C1 verb /ɪnˈfleɪt/

inflate

inflar
Meaning
to fill with air or gas so it expands; to increase excessively or artificially
Example
The mechanic inflated the tire to the correct pressure.
El mecánico infló el neumático a la presión correcta.
C2 noun /ˈɪnsələns/

insolence

insolencia
Meaning
rude or disrespectful behavior
Example
The teacher was shocked by the student's insolence.
El maestro se sorprendió por la insolencia del estudiante.
B2 verb /ˌɪntərˈfɪər/

interfere

felicidad
Meaning
to become involved in something that is not your concern; to hinder or obstruct
Example
Parents should not interfere in their children’s personal choices.
No pudo ocultar su felicidad cuando recibió el premio.
B2 adverb /ɪmˈpɔːtəntli/

importantly

de manera importante
Meaning
in a way that is of great significance or value
Example
Importantly, the report highlights the need for immediate action.
De manera importante, el informe resalta la necesidad de acción inmediata.
B2 adjective /aɪˈrɒnɪk/

ironic

irónico, sarcástico
Meaning
happening in the opposite way to what is expected, often amusing or sarcastic
Example
It is ironic that the fire station burned down.
Es irónico que la estación de bomberos se haya quemado.
B1 adjective /ˈɪnər/

inner

interno
Meaning
Located inside or closer to the center; relating to one’s thoughts or feelings.
Example
She shared her inner thoughts with her best friend.
Ella compartió sus pensamientos internos con su mejor amiga.
C2 noun /ɪˈrʌp.ʃən/

Irruption

una entrada violenta repentina; una invasión o incursión; una explosión o erupción repentina
Meaning
a sudden violent entry; an invasion or raid; a sudden outburst or eruption
Example
The army's irruption into enemy territory caught the opposing forces completely off guard.
La irrupción del ejército en el territorio enemigo sorprendió completamente a las fuerzas opuestas.
B2 noun /ɪnˈkluːʒən/

inclusion

inclusión
Meaning
the action or state of including or being included within a group or structure
Example
Diversity and inclusion are key values in modern workplaces.
La diversidad y la inclusión son valores clave en los lugares de trabajo modernos.
C1 adjective /ɪmˈpʌlsɪv/

impulsive

impulsivo, de impulso
Meaning
acting suddenly without careful thought
Example
She made an impulsive decision to buy the car.
Tomó una decisión impulsiva de comprar el coche.
C1 adjective /ɪnˈtɜːrmənəbl/

interminable

interminable
Meaning
Seemingly endless; having no apparent end.
Example
The meeting felt interminable and exhausting.
La reunión parecía interminable y agotadora.
C2 noun /ˌɪdiəˈsɪŋkrəsi/

idiosyncrasy

idiosincrasia
Meaning
A distinctive or peculiar characteristic, habit, or mannerism unique to an individual.
Example
One of her idiosyncrasies was humming while working.
Una de sus idiosincrasias era tararear mientras trabajaba.
B1 adjective /ɪnˈvɑːlvd/

involved

involucrado
Meaning
complicated or engaged in something
Example
She was deeply involved in community service.
Ella estaba profundamente involucrada en el servicio comunitario.
B2 adjective /ˌɪnkənˈsɪstənt/

inconsistent

inconsistente
Meaning
Not staying the same throughout; lacking harmony or regularity.
Example
His answers were inconsistent and confusing.
Sus respuestas fueron inconsistentes y confusas.
C1 verb /ɪnˈsɪnjueɪt/

insinuate

insinuar
Meaning
To suggest or hint something indirectly and often unpleasantly.
Example
He insinuated that she had lied about her qualifications.
Él insinuó que ella había mentido sobre sus calificaciones.
B2 noun /ˈɪnˌteɪk/

intake

ingesta
Meaning
the process of taking something in, especially food or drink
Example
He monitored his daily intake of calories to maintain a healthy diet.
Él monitoreó su ingesta diaria de calorías para mantener una dieta saludable.
A1 preposition /ɪn ˈfrʌnt əv/

in front of

delante de
Meaning
positioned before or ahead of something; facing or located at the forward side of a person or object
Example
She stood in front of the building.
Ella estaba de pie delante del edificio.
B1 adjective /aɪˈdiːəl/

ideal

ideal
Meaning
the best possible; perfect for a situation
Example
This place is ideal for a picnic.
Este lugar es ideal para un picnic.
B1 noun ɪnˈven.ʃən

invention

invención
Meaning
The action of inventing something, typically a process or device.
Example
The invention revolutionized communication.
La invención revolucionó la comunicación.
B2 noun /ɪnˈdʌstriəl ˌrɛvəˈluːʃən/

Industrial Revolution

Revolución Industrial
Meaning
The rapid development of industry that occurred in Britain in the late 18th and 19th centuries, brought about by the introduction of machinery and characterized by the use of steam power and the growth of factories.
Example
The Industrial Revolution marked a shift in production processes.
La Revolución Industrial marcó un cambio en los procesos de producción.
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 /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.
C2 adjective /ɪnˈɛksərəbl/

inexorable

inexorable
Meaning
Impossible to stop or prevent; relentless.
Example
The inexorable rise of technology is changing every aspect of life.
El inexorable aumento de la tecnología está cambiando cada aspecto de la vida.
C1 adjective ˌɪn.təˈmɪt.ənt

intermittent

intermitente
Meaning
Happening irregularly, not continuously.
Example
The rain was intermittent throughout the day.
La lluvia fue intermitente durante todo el día.
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.
B2 verb /ɪnˈtɜːrprət/

interpret

interpretar / traducir
Meaning
to explain the meaning of something; to translate orally
Example
She had to interpret the speech for the foreign guests.
Ella tuvo que interpretar el discurso para los invitados extranjeros.
C2 noun /ˌɪntərpəˈzɪʃən/

interposition

intervención
Meaning
The act of intervening or coming between two things, often to influence or prevent an outcome.
Example
The manager’s interposition prevented a heated argument from escalating.
La intervención del gerente evitó que una discusión acalorada se intensificara.
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.
C2 adjective /ɪnˈkɒnstənt/

inconstant

inconstante
Meaning
frequently changing; not consistent or dependable
Example
His inconstant moods made it difficult to work with him.
Sus estados de ánimo inconstantes hacían difícil trabajar con él.
C2 noun /ɪnˈɛrənsi/

inerrancy

inerrancia
Meaning
the belief or quality of being free from error; absolute correctness
Example
Some religious groups strongly affirm the inerrancy of their sacred texts.
Algunos grupos religiosos afirman fuertemente la inerrancia de sus textos sagrados.
A2 noun /ˌɪnvɪˈteɪʃən/

invitation

felicidad
Meaning
a written or spoken request to attend an event or to participate in something
Example
She sent me an invitation to her wedding.
Ella no pudo ocultar su felicidad cuando recibió el premio.
C1 verb /ɪmˈpɛl/

impel

impulsar
Meaning
to drive, force, or urge someone to do something
Example
Her curiosity impelled her to open the mysterious box.
Su curiosidad la impulsó a abrir la caja misteriosa.
C1 noun /ˈɪrɪtənt/

irritant

sustancia irritante
Meaning
something that causes irritation or discomfort
Example
Dust is a common irritant for people with allergies.
El polvo es un irritante común para las personas con alergias.
C1 adjective /ɪnˈtændʒəbl/

intangible

intangible
Meaning
Unable to be touched or grasped; not having a physical presence.
Example
Trust is an intangible quality in relationships.
La confianza es una cualidad intangible en las relaciones.
B2 adjective /ɪnˈædɪkwət/

inadequate

inadecuado
Meaning
Not sufficient or good enough.
Example
The funding was inadequate to complete the project.
El financiamiento era inadecuado para completar el proyecto.
C2 adjective /ˈɪndələnt/

indolent

perezoso
Meaning
Wanting to avoid activity or exertion; lazy.
Example
The indolent cat slept in the sun all afternoon.
El gato perezoso durmió al sol toda la tarde.
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.
B2 verb aɪˈdɛntɪfaɪd

identified

identificado
Meaning
To recognize or establish who or what someone or something is.
Example
The root causes of the issue need to be identified.
Las causas raíz del problema deben ser identificadas.
C2 noun /ɪnˈsɪpiəns/

incipience

inicio
Meaning
the beginning or initial stage of something
Example
The project was still in its incipience when funding was approved.
El proyecto aún estaba en su inicio cuando se aprobó la financiación.
C1 adjective ɪn ˈfleɪ.ʃə.ner.i

inflationary

inflacionario
Meaning
Characterized by or tending to cause monetary inflation; relating to rising prices.
Example
The government took measures to control inflationary pressures.
El gobierno tomó medidas para controlar las presiones inflacionarias.
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 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.
C2 adjective /ˌɪnfəˈlɪsɪtəs/

infelicitous

inadecuado
Meaning
not suitable or well chosen; awkward or unfortunate
Example
His infelicitous remark ruined the atmosphere of the meeting.
Su comentario inadecuado arruinó el ambiente de la reunión.
C1 adjective /ɪnˈhjuːmən/

Inhuman

inhumano
Meaning
lacking human qualities; cruel; brutal; savage
Example
The dictator's inhuman treatment of prisoners shocked the international community.
El trato inhumano del dictador hacia los prisioneros sorprendió a la comunidad internacional.
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.
C2 noun /ɪnˈfrækʃən/

infraction

infracción
Meaning
A violation or breach of a rule, law, or agreement.
Example
The student was punished for a minor infraction of the school rules.
El estudiante fue castigado por una infracción menor de las reglas escolares.
B2 noun ˌɪmplɪmenˈteɪʃən

implementation

implementación
Meaning
The process of putting a decision or plan into effect; execution.
Example
Proper implementation of policies is crucial.
La implementación adecuada de las políticas es crucial.
C1 noun /ɪmˈpɛdɪmənt/

impediments

obstáculos
Meaning
A hindrance or obstruction in doing something; things that prevent progress or achievement.
Example
Economic impediments often hinder social development.
Los obstáculos económicos a menudo dificultan el desarrollo social.
B2 noun ˌɪr.ɪˈɡeɪ.ʃən

irrigation

riego
Meaning
The artificial application of water to land or soil.
Example
Irrigation systems improve crop yields in dry regions.
Los sistemas de riego mejoran los rendimientos de los cultivos en regiones secas.
C1 adverb /ˌɪn.ədˈvɜːr.tənt.li/

Inadvertently

inadvertidamente; sin intención; por error
Meaning
without being aware of what you are doing; unintentionally; by mistake
Example
She inadvertently deleted the important file while cleaning her computer.
Ella eliminó accidentalmente el archivo importante mientras limpiaba su computadora.
B2 noun /ˌɪmɪˈɡreɪʃən/

immigration

inmigración
Meaning
the action of coming to live permanently in a foreign country
Example
Immigration policies vary from country to country.
Las políticas de inmigración varían de un país a otro.
C2 noun /aɪˈkɒnəklæst/

iconoclast

iconoclasta
Meaning
A person who attacks or criticizes cherished beliefs, traditions, or institutions.
Example
He was known as an iconoclast who challenged old traditions.
Era conocido como un iconoclasta que desafiaba las viejas tradiciones.
C2 adjective /ɪnˈsɛnseɪt/

insensate

insensible
Meaning
lacking physical sensation or empathy; without feeling or sensitivity
Example
The dictator's insensate cruelty shocked the world.
La crueldad insensible del dictador sorprendió al mundo.
B2 adjective /ɪˈrɛləvənt/

Irrelevant

irrelevante
Meaning
not connected with or relevant to something; having no bearing on the matter
Example
Your past mistakes are irrelevant to this discussion.
Tus errores pasados son irrelevantes para esta discusión.
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 /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.
C2 verb /ˌɪntərˈpoʊz/

interpose

interponer
Meaning
To place or insert between one thing and another; to intervene in a situation.
Example
He quickly interposed himself between the fighters to stop the quarrel.
Él rápidamente se interpuso entre los luchadores para detener la pelea.
C2 adjective /ɪmˈperɪʃəbəl/

Imperishable

imperdurable; eterno; imperecedero
Meaning
not subject to decay; lasting forever; eternal
Example
The imperishable beauty of classical art continues to inspire generations.
La belleza imperecedera del arte clásico sigue inspirando generaciones.
C2 noun /ɪmˈpʌlʃən/

impulsion

impulso
Meaning
a strong urge or drive to act; the act of impelling
Example
His impulsion to travel made him leave his job suddenly.
Su impulso de viajar lo llevó a dejar su trabajo de repente.
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.
B2 noun ɪnˈsɛntɪvz

incentives

incentivos
Meaning
Things that motivate or encourage one to do something.
Example
Tax incentives are used to encourage investment in renewable energy.
Se utilizan incentivos fiscales para fomentar la inversión en energía renovable.
C1 adjective /ˌɪnəˈtɛntɪv/

inattentive

inattento
Meaning
not paying attention; lacking focus or concentration
Example
The inattentive student missed several important instructions.
El estudiante inattento perdió varias instrucciones importantes.
B2 noun ɪnˈdʒʌstɪs

injustice

injusticia
Meaning
Lack of fairness or justice; the practice of being unjust or unfair.
Example
The story portrays the injustices faced by the common people.
La historia retrata las injusticias que enfrentan las personas comunes.
C2 adjective /ˌɪn.ɪˈlʌk.tə.bəl/

ineluctable

inevitable
Meaning
Impossible to avoid or escape; inevitable.
Example
Death is an ineluctable part of human existence.
C2 noun /ˈɪn.fɪ.del/

Infidel

infiel
Meaning
a person who does not believe in religion or whose religious beliefs differ from one's own
Example
In historical contexts, crusaders often referred to their enemies as infidels.
En contextos históricos, los cruzados a menudo se referían a sus enemigos como infieles.
C1 noun /ɪnˈfɜːrnoʊ/

inferno

incendio
Meaning
a large, intense fire that is dangerously out of control
Example
The building turned into an inferno within minutes.
El edificio se convirtió en un incendio en minutos.
C1 noun ɪnˈdʌldʒəns

indulgence

indulgencia
Meaning
The practice of allowing oneself to enjoy the pleasure of something.
Example
His indulgence in junk food affected his health.
La indulgencia en la comida chatarra afecto su salud.
C1 noun /ˌɪnˈdɪsəplɪn/

indiscipline

indisciplina
Meaning
lack of discipline or self-control; failure to obey rules or maintain order
Example
Indiscipline among the students disrupted the learning environment.
La indisciplina entre los estudiantes interrumpió el ambiente de aprendizaje.
C1 noun /ɪmˌpɜː.sənˈeɪ.ʃən/

impersonation

suplantación
Meaning
The action of pretending to be another person for the purpose of entertainment or fraud.
Example
Online impersonation is a serious cybercrime.
La suplantación en línea es un crimen cibernético grave.
C1 adjective ˌɪn.krəˈmen.təl

incremental

incremental
Meaning
Relating to or denoting an increase or addition, especially one of a series on a fixed scale; proceeding in small stages.
Example
Incremental changes ensure sustainability.
Los cambios incrementales aseguran la sostenibilidad.
C1 adjective /ɪmˈpɑːrʃəl/

Impartial

imparcial; neutral
Meaning
treating all sides fairly; unbiased; neutral
Example
A good judge must remain impartial throughout the trial.
Un buen juez debe mantenerse imparcial durante todo el juicio.
C1 adjective /ɪˈmeʒərəbəl/

Immeasurable

inconmensurable
Meaning
too large or extensive to measure; boundless
Example
The immeasurable love of a mother knows no bounds.
El amor inconmensurable de una madre no tiene límites.
C2 adjective /ɪnˈvaɪələt/

inviolate

inviolado
Meaning
free from violation, injury, or desecration; kept safe and untouched
Example
The ancient temple remained inviolate for centuries.
El antiguo templo permaneció inviolado durante siglos.
A2 verb /ˌɪntrəˈduːs/

introduce

presentar
Meaning
to present someone; to bring in for the first time
Example
Let me introduce you to my friend.
Déjame presentarte a mi amigo.
C2 adjective /ɪmˈpɛn.ɪ.tənt/

impenitent

impenitente
Meaning
Not feeling regret or shame about one's actions.
Example
The criminal remained impenitent after the trial.
El criminal permaneció impenitente después del juicio.
C2 verb /ˈɪndjʊˌreɪt/

indurate

endurecer
Meaning
To harden or make something physically or emotionally tough.
Example
Years of hardship indurated his spirit.
Años de dificultades induraron su espíritu.
C2 adjective /ɪmˈpæsɪbəl/

impassible

impasible
Meaning
Incapable of suffering or feeling pain (used mainly in theological or philosophical contexts).
Example
Some philosophers argue that God is impassible and cannot experience human emotions.
Algunos filósofos argumentan que Dios es impasible y no puede experimentar emociones humanas.
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.
B1 verb ɪnˈvɛst

invest

invertir
Meaning
To put money, effort, time, etc. into something to make a profit or get an advantage.
Example
Investing in intellectual property can generate passive income.
Invertir en propiedad intelectual puede generar ingresos pasivos.
B1 verb /ɪnˈvɛnt/

invent

inventar
Meaning
to create or design something that has not existed before
Example
Thomas Edison invented the electric bulb.
Thomas Edison inventó la bombilla eléctrica.
C1 adjective /aɪˈdɪlɪk/

idyllic

idílico y hermoso
Meaning
Like an idyll; extremely happy, peaceful, or picturesque.
Example
They enjoyed an idyllic vacation by the sea.
Disfrutaron de unas vacaciones idílicas junto al mar.
C1 noun /ˈɪnflʌks/

influx

afluencia
Meaning
A large arrival or flow of people or things.
Example
The city experienced an influx of tourists during the festival.
La ciudad experimentó una afluencia de turistas durante el festival.
C2 adjective /ɪnˈtɛsteɪt/

intestate

muerto sin testamento
Meaning
Having died without leaving a valid will.
Example
She died intestate, so her assets were distributed by law.
Ella murió sin testamento, por lo que sus bienes fueron distribuidos por la ley.
C2 adverb /ˌɪnsəʊˈmʌtʃ/

insomuch

tanto
Meaning
to such an extent
Example
He was insomuch tired that he could hardly stand.
Estaba tan cansado que apenas podía mantenerse en pie.
C1 adjective /ɪˈnɔːrdənət/

inordinate

excesivo
Meaning
Excessive or unusually large in degree.
Example
She spent an inordinate amount of time on her phone.
Ella pasó un tiempo excesivo en su teléfono.