impunity
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C2 noun /ɪmˈpjuːnɪti/

impunity

impunidad
Meaning
freedom from punishment or harmful consequences for an action
Example
The dictator ruled with impunity, ignoring international laws.
El dictador gobernó con impunidad, ignorando las leyes internacionales.
B2 noun /ˈaɪkɒn/

icon

ícono, símbolo
Meaning
A person or thing regarded as a symbol of something, or a graphic symbol on a screen.
Example
The singer became a cultural icon.
El cantante se convirtió en un ícono cultural.
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.
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.
C2 adjective /ɪnˈkɒŋɡruənt/

incongruent

incongruente
Meaning
Not in harmony or keeping with the surroundings or other aspects.
Example
His casual outfit looked incongruent at the formal dinner.
Su atuendo casual se veía incongruente en la cena formal.
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.
B1 noun /ˌɪntərˈækʃən/

interaction

interacción mutua
Meaning
The process of people or things acting upon or influencing each other.
Example
The teacher encouraged more interaction between students.
El maestro alentó más interacción entre los estudiantes.
B2 adjective /ɪmˈplɪsɪt/

implicit

implícito
Meaning
Suggested or understood without being directly stated.
Example
Her trust in him was implicit.
Su confianza en él era implícita.
C1 noun /ɪmˈpɜː.mə.nəns/

impermanence

impermanencia
Meaning
The state or fact of lasting for only a limited period of time.
Example
The philosophy of Buddhism emphasizes the impermanence of life.
La filosofía del budismo enfatiza la impermanencia de la vida.
B2 noun /ˈaɪ.dəl/

Idol

ídolo; persona admirada
Meaning
an image or representation of a god used as an object of worship; a person who is greatly admired
Example
The singer became a teenage idol after her hit song topped the charts worldwide.
La cantante se convirtió en un ídolo adolescente después de que su canción de éxito llegara a la cima de las listas de éxitos mundiales.
C1 noun /ˌɪntərˌɒpərəˈbɪləti/

interoperability

interoperabilidad
Meaning
The ability of computer systems or software to exchange and make use of information.
Example
The interoperability of different software systems ensures seamless workflow.
La interoperabilidad de diferentes sistemas de software asegura un flujo de trabajo continuo.
C2 verb /ɪˈmjʊər/

immure

encerrar
Meaning
to confine or enclose someone against their will
Example
The prisoner was immured in a dark cell.
El prisionero fue encerrado en una celda oscura.
C2 adjective /ˈɪmənənt/

immanent

inmanente
Meaning
existing or operating within; inherent
Example
He believed that moral values are immanent in human nature.
Él creía que los valores morales son inmanentes en la naturaleza humana.
C2 adjective /ˌɪlˈneɪ.tʃəd/

ill-natured

de mal carácter
Meaning
Having a bad or unpleasant character; unkind or malicious.
Example
He made an ill-natured remark about his colleague.
Hizo un comentario de mal carácter sobre su colega.
B2 verb /ˈɪntɪɡreɪt/

integrate

integrar
Meaning
To combine or bring together into a unified whole.
Example
The new system integrates data from multiple sources.
El nuevo sistema integra datos de múltiples fuentes.
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.
C1 adjective /ɪˈræʃənəl/

irrational

irracional
Meaning
not logical or reasonable; lacking clear thought
Example
His fear of the dark was completely irrational.
Su miedo a la oscuridad era completamente irracional.
C2 adjective /ɪnˈkɑːdʒɪtənt/

incogitant

desconsiderado
Meaning
Lacking thought; inconsiderate or thoughtless.
Example
It was incogitant of him to make such a rude comment.
Fue incogitante de su parte hacer un comentario tan grosero.
C2 adjective /ɪnˈskruːtəbl̩/

inscrutable

felicidad
Meaning
impossible to understand or interpret
Example
His inscrutable expression made it hard to know what he was thinking.
No pudo esconder su felicidad cuando recibió el premio.
B2 noun, verb /ˌɪnkənˈviːniəns/

inconvenience

inconveniente
Meaning
trouble or difficulty caused to someone; to cause trouble or difficulty to someone
Example
We apologize for any inconvenience caused by the delay.
Pedimos disculpas por cualquier inconveniente causado por el retraso.
C2 adjective /ɪˈrɛfrəɡəbəl/

irrefragable

irrefutable
Meaning
Impossible to refute, deny, or break
Example
The lawyer presented irrefragable evidence that proved his client’s innocence.
El abogado presentó pruebas irrefutables que demostraron la inocencia de su cliente.
A2 noun /ˈɪʃ.uːz/

issues

problemas
Meaning
Important topics or problems for debate or discussion.
Example
Health issues from pollution are increasing.
Los problemas de salud causados por la contaminación están aumentando.
B1 verb /ɪmˈprɛs/

impress

impresionar
Meaning
to cause someone to feel admiration or respect
Example
Her speech managed to impress the audience.
Su discurso logró impresionar a la audiencia.
C2 adjective/noun /ɪnˈkɑːrnədiːn/

incarnadine

rojo intenso
Meaning
a bright crimson or pinkish-red color
Example
The sky turned incarnadine at sunset.
El cielo se tornó rojo intenso al atardecer.
C1 noun ˌɪrɪˈvɜːrsəbl ˈdæmɪdʒ

irreversible damage

daño irreversible
Meaning
Harm or injury that cannot be undone or repaired.
Example
Climate change causes irreversible damage to ecosystems.
El cambio climático causa daño irreversible a los ecosistemas.
C1 noun /ɪnˈdɪf.ər.əns/

Indifference

indiferencia; desinterés; apatía
Meaning
lack of interest, concern, or sympathy; the state of not caring about something
Example
His indifference to his studies resulted in poor grades throughout the semester.
Su indiferencia por sus estudios resultó en malas calificaciones durante todo el semestre.
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.
C2 noun /ˌɪnkrʌˈsteɪʃən/

incrustation

costra
Meaning
a crust or hard coating formed on the surface of something
Example
The old pipes were blocked due to heavy incrustation of minerals.
Las viejas tuberías estaban bloqueadas debido a una fuerte incrustación de minerales.
C2 adjective/verb /ɪnˈkɑːrneɪt/

incarnate

encarnado
Meaning
to embody or represent in human form; in flesh
Example
She is kindness incarnate.
Ella es la bondad encarnada.
C1 adjective /ɪnˈfɜːm/

infirm

débil
Meaning
Weak, especially due to old age or illness.
Example
The infirm old man needed assistance to walk.
El anciano débil necesitaba ayuda para caminar.
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 ˌɪn.fɪlˈtreɪ.ʃən

infiltration

infiltración, acceso secreto
Meaning
The process of entering or gaining access to an organization or place surreptitiously.
Example
Cybersecurity prevents infiltration into sensitive data.
La ciberseguridad previene la infiltración en datos sensibles.
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 adjective /ɪnˈdjuːbɪtəbl/

indubitable

indudable
Meaning
Impossible to doubt; unquestionable.
Example
It is indubitable that hard work leads to success.
Es indudable que el trabajo duro lleva al éxito.
C2 adjective /ɪˈnɪm.ɪ.tə.bəl/

inimitable

inimitable
Meaning
So good or unusual as to be impossible to copy; unique.
Example
His inimitable writing style made him a literary legend.
Su estilo de escritura inimitable lo convirtió en una leyenda literaria.
B1 noun /ɪnˈstrʌkʃənz/

instructions

instrucciones
Meaning
Detailed information on how something should be done or operated.
Example
Please follow the instructions on the box.
Por favor, siga las instrucciones en la caja.
C2 noun /ˈaɪ.kɒn/

ikon

imagen religiosa o símbolo
Meaning
A religious image or symbol, especially in the Eastern Orthodox Church.
Example
The church displayed a beautifully painted ikon of the Virgin Mary.
La iglesia mostró un ícono bellamente pintado de la Virgen María.
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 verb /ɪnˈsaɪt/

incite

incitar
Meaning
to provoke; to stir up
Example
His speech incited the crowd to violence.
Su discurso incitó a la multitud a la violencia.
A1 noun /ˈɪntənet/

internet

red global de computadoras
Meaning
A global computer network providing a variety of information and communication facilities.
Example
The internet has revolutionized the way we access information.
Internet ha revolucionado la forma en que accedemos a la información.
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 noun /ɪnˈsɜːrdʒəns/

insurgence

insurgencia
Meaning
An act of rebellion or uprising against authority.
Example
The government struggled to contain the growing insurgence.
El gobierno luchó por contener la creciente insurgencia.
C2 adjective /ˌɪnɪkˈsprɛsəbl/

inexpressible

inexpresable
Meaning
Too strong or extreme to be expressed in words.
Example
She felt inexpressible joy at the news of her success.
Sintió una alegría inexpresable al enterarse de su éxito.
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 adverb /ɪnˈdɛfɪnətli/

indefinitely

indefinidamente
Meaning
for an unlimited or unspecified period of time
Example
The project has been postponed indefinitely.
El proyecto ha sido pospuesto indefinidamente.
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 /ˌɪnkəmˌpætəˈbɪlɪti/

incompatibility

incompatibilidad
Meaning
the state of being unable to exist or work together harmoniously; lack of compatibility
Example
The project failed because of incompatibility between the two software systems.
El proyecto fracasó por la incompatibilidad entre los dos sistemas de software.
C2 adjective /ˌɪrɪˈdjuːsəbl/

irreducible

irreducible
Meaning
impossible to reduce or simplify further
Example
The fraction 3/7 is irreducible.
La fracción 3/7 es irreducible.
A2 noun /ˈaɪtəm/

item

artículo
Meaning
A single thing, object, or unit, often part of a list or collection.
Example
Each item on the list must be checked carefully.
Cada artículo en la lista debe ser revisado cuidadosamente.
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 /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 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.
B1 adjective /ɪˈnɪʃəl/

initial

inicial
Meaning
Existing or occurring at the beginning.
Example
Her initial reaction was one of surprise.
Su reacción inicial fue una de sorpresa.
C2 noun /ɪmˈpaɪ.ə.ti/

Impiety

impiedad
Meaning
lack of piety or reverence, especially for a god; disrespect or irreverence toward religious matters
Example
His impiety shocked the religious community when he mocked their sacred ceremonies.
Su impiedad sorprendió a la comunidad religiosa cuando se burló de sus ceremonias sagradas.
B2 verb ɪnˈvɛst.ɪŋ

investing

invertir
Meaning
The act of putting money into financial schemes, shares, property, or a commercial venture with the expectation of achieving a profit.
Example
Investing in stocks can generate long-term wealth.
Invertir en acciones puede generar riqueza a largo plazo.
B2 adjective /ˌɪrɪˈzɪstəbəl/

Irresistible

irresistible
Meaning
too attractive and tempting to be resisted; impossible to resist
Example
The chocolate cake was absolutely irresistible.
El pastel de chocolate era absolutamente irresistible.
C2 adjective /ˌɪndɪˈvɜːrtɪbəl/

indivertible

no desviable
Meaning
Not able to be turned aside or diverted.
Example
The judge's indivertible attention was on the case.
La atención del juez no podía desviarse del caso.
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.
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.
C2 adjective /ˌɪntərˈniːsaɪn/

internecine

conflicto interno
Meaning
Relating to conflict within a group, often causing mutual destruction.
Example
The internecine conflict weakened the organization from within.
El conflicto interno debilitó la organización desde dentro
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 verb /ɪnˈdaɪt/

indict

acusar
Meaning
to formally accuse someone of committing a serious crime
Example
The grand jury decided to indict the politician for corruption.
El gran jurado decidió acusar al político por corrupción.
C2 noun /ɪnˈtɜːrstɪs/

interstice

hendidura
Meaning
a small space that lies between things
Example
Light filtered through the narrow interstices of the wall.
La luz se filtró a través de las estrechas hendiduras de la pared.
B2 adjective /ˈɪmpæktfʊl/

impactful

impactante
Meaning
Having a major impact or effect; powerful and forceful.
Example
Her impactful speech moved the audience to take action.
Su discurso impactante movió al público a tomar acción.
C1 adjective /ɪnˈdʌktɪv/

inductive

inductivo
Meaning
characterized by the inference of general laws from particular instances; reasoning from specific cases to general principles
Example
The scientist used inductive reasoning to form a hypothesis.
El científico usó razonamiento inductivo para formular una hipótesis.
C2 adjective /ˌɪɡ.nəˈmɪn.i.əs/

ignominious

ignominioso
Meaning
Marked by shame, disgrace, or humiliation.
Example
The team suffered an ignominious defeat in the finals.
El equipo sufrió una ignominiosa derrota en la final.
B2 adjective ˈɪn.tɪ.ɡrəl

integral

integral
Meaning
Necessary to make a complete whole; essential or fundamental.
Example
Exercise is an integral part of a healthy lifestyle.
El ejercicio es una parte integral de un estilo de vida saludable.
C2 noun /ˌɪnvəˈlɪdɪti/

invalidity

invalidez
Meaning
the state of being invalid, legally void, or lacking force or validity
Example
The court ruled that the contract suffered from invalidity.
El tribunal dictaminó que el contrato tenía invalidez.
C1 verb /ɪɡˈnaɪt/

ignite

encender
Meaning
To catch fire or cause to catch fire; to start or arouse.
Example
The sparks ignited the dry leaves in seconds.
Las chispas encendieron las hojas secas en segundos.
C2 adjective /ˌɪnkəmˈbʌstəbl/

incombustible

incombustible
Meaning
Not capable of catching fire or burning.
Example
This material is incombustible and safe for construction.
Este material es incombustible y seguro para la construcción.
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.
B2 verb /ˈɪl.ə.streɪt/

illustrate

ilustrar
Meaning
to explain or make something clear by using examples, pictures, or comparisons
Example
The teacher used diagrams to illustrate the concept.
El maestro utilizó diagramas para ilustrar el concepto.
B2 noun /aɪˈdiː/

id

identificación
Meaning
identification; a document or number used to prove who someone is
Example
Please show your ID at the entrance.
Por favor, muestre su identificación en la entrada.
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 /ɪnˈʃʊər/

insure

asegurar
Meaning
to provide insurance; to make certain
Example
I need to insure my new car.
Necesito asegurar mi coche nuevo.
C2 adjective /ɪnˈeɪliənəbl/

inalienable

inalienable
Meaning
Unable to be taken away or transferred; absolute and permanent.
Example
Freedom of speech is an inalienable right.
La libertad de expresión es un derecho inalienable.
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.
C1 verb /ɪmˈpɛər/

impair

deteriorar
Meaning
to weaken or damage something, especially a function or ability
Example
Smoking can impair your lung capacity.
Fumar puede dañar tu capacidad pulmonar.
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.
C1 adjective /ɪnˈvæljʊəbl/

invaluable

invaluable
Meaning
Extremely useful or indispensable.
Example
Her advice proved invaluable to my success.
Su consejo resultó invaluable para mi éxito.
C1 adjective /ɪnˈdɪɡnənt/

indignant

indignado
Meaning
Feeling or showing anger at something considered unfair or unjust.
Example
She was indignant when accused of cheating.
Ella estaba indignada cuando la acusaron de hacer trampa.
B2 noun /ɪnˈvɒlvmənt/

involvement

participación
Meaning
the act of taking part in something
Example
His involvement in the project was crucial.
Su participación en el proyecto fue crucial.
C2 adjective /ˌɪnæprɪˈhɛnsəbl/

inapprehensible

incomprensible
Meaning
not understandable; incomprehensible
Example
The concept was so abstract that it seemed inapprehensible to most students.
El concepto era tan abstracto que parecía incomprensible para la mayoría de los estudiantes.
C1 noun /ˌɪnkɑːrˈneɪʃən/

incarnation

encarnación
Meaning
the embodiment of a deity, spirit, or quality in a physical form
Example
The monk was considered the incarnation of compassion.
El monje fue considerado la encarnación de la compasión.
C1 adjective /ˌɪmprɪˈsaɪs/

imprecise

impreciso
Meaning
Not exact or accurate; vague.
Example
His explanation was too imprecise to be helpful.
Su explicación era demasiado imprecisa para ser útil.
C1 noun /ˈɪnsɪdəns/

incidence

incidencia
Meaning
the occurrence, rate, or frequency of something
Example
The incidence of road accidents has decreased this year.
La incidencia de accidentes de tráfico ha disminuido este año.
C1 adjective ˌɪn.tə.dʒen.əˈreɪ.ʃən.əl

intergenerational

intergeneracional, entre diferentes generaciones de una familia
Meaning
Existing or occurring between different generations of a family.
Example
Intergenerational wisdom ensures cultural continuity.
La sabiduría intergeneracional asegura la continuidad cultural.
B2 verb /ˈɪmɪteɪt/

imitate

imitar
Meaning
to copy the behavior or manner of someone or something
Example
Children often imitate their parents' behavior.
Los niños a menudo imitan el comportamiento de sus padres.
C2 noun /ˈɪntərˌloʊpər/

interloper

intruso
Meaning
A person who becomes involved in a situation or place where they are not wanted.
Example
He felt like an interloper at the private family gathering.
Se sintió como un intruso en la reunión familiar privada.
C2 noun /ˌɪrɪˈdɛsəns/

iridescence

brillo iridiscente
Meaning
a play of lustrous, changing colors like those of a rainbow
Example
The butterfly's wings shimmered with iridescence.
Las alas de la mariposa brillaban con brillo iridiscente.
C2 noun /ˈɪn.tɪ.ɡreɪ.tɪv dɪˈpləʊ.mə.si/

integrative diplomacy

diplomacia integradora
Meaning
A diplomatic approach that seeks to combine or coordinate different elements, interests, or parties into a unified whole.
Example
Integrative diplomacy strengthens alliances.
La diplomacia integradora fortalece las alianzas.
C1 adjective /ˌɪndɪˈvɪzəbl/

indivisible

indivisible
Meaning
Not able to be divided or separated.
Example
The country's unity was indivisible despite differences.
La unidad del país era indivisible a pesar de las diferencias.
C1 adjective /ɪˈmoʊbəl/

immobile

inmóvil
Meaning
unable to move or be moved
Example
After the accident, he was immobile for weeks.
Después del accidente, estuvo inmóvil durante semanas.
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.
C2 verb /ɪnˈdɒktrɪˌneɪt/

indoctrinate

adoctrinar
Meaning
To teach someone to fully accept a set of beliefs or ideas without question.
Example
The regime tried to indoctrinate the youth with propaganda.
El régimen trató de adoctrinar a la juventud con propaganda.
C1 noun ˌɪnfrəˈstrʌktʃərəl dɪˈveləpmənt

infrastructural development

desarrollo infraestructural
Meaning
The process of building and improving the basic physical and organizational structures and facilities needed for the operation of a society or enterprise.
Example
Infrastructural development is necessary for efficient recycling.
El desarrollo infraestructural es necesario para el reciclaje eficiente.
B2 verb /ɪnˈdʒɛkt/

inject

inyectar
Meaning
To introduce a substance, especially a drug, into the body using a needle.
Example
The nurse will inject the vaccine into the patient's arm.
La enfermera inyectará la vacuna en el brazo del paciente.
B1 verb /ɪmˈpɔːrt/

import

importar
Meaning
to bring goods or services into a country from abroad; to transfer data
Example
The country imports oil from abroad.
El país importa petróleo del extranjero.
C1 adjective /ɪmˈprɒbəbl/

improbable

improbable
Meaning
Not likely to be true or to happen.
Example
It seems improbable that he will arrive on time.
Parece improbable que llegue a tiempo.
C2 noun /aɪər/

ire

ira, enojo
Meaning
intense anger or rage
Example
The new policy provoked the ire of the employees.
La nueva política provocó la ira de los empleados.
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.
B2 adjective /ɪˈlɪt.ər.ət/

Illiterate

analfabeto; iletrado; ignorante
Meaning
unable to read or write; lacking education
Example
The program aims to help illiterate adults learn to read and write.
El programa tiene como objetivo ayudar a los adultos analfabetos a aprender a leer y escribir.
C2 adjective /ɪnˈvɛtərət/

inveterate

inmutable
Meaning
having a long-established habit, activity, or interest that is unlikely to change
Example
He is an inveterate reader who spends hours in the library every day.
Él es un lector inmutable que pasa horas en la biblioteca todos los días.
C2 noun /ɪˈnænɪti/

inanity

tonterías, necedades
Meaning
a nonsensical remark or action; silliness; emptiness
Example
The speech was full of inanities that bored the audience.
El discurso estaba lleno de tonterías que aburrían a la audiencia.
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 adjective ɪnˈev.ɪ.tə.bəl

inevitable

inevitable
Meaning
Certain to happen; unavoidable.
Example
Death is an inevitable part of life.
La muerte es una parte inevitable de la vida.
C1 verb /ˈɪtəreɪt/

iterate

iterar
Meaning
To repeat a process or statement, often to improve or refine.
Example
The software team will iterate the design until it meets user needs.
El equipo de software iterará el diseño hasta que cumpla con las necesidades del usuario.
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.
B2 noun ɪnˌdʌstrɪəlaɪˈzeɪʃən

industrialization

industrialización
Meaning
The development of industries in a country or region on a wide scale.
Example
Industrialization changed the global economy dramatically.
La industrialización cambió drásticamente la economía global.
B2 verb ɪmˈpoʊz

imposes

imponer
Meaning
To establish or apply by authority; to force something unwelcome or unfamiliar to be accepted or put in place.
Example
Pollution imposes harmful effects on the environment.
La contaminación impone efectos perjudiciales en el medio ambiente.
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 /aɪˈtɪnəˌreɪt/

itinerate

itinerar
Meaning
To travel from place to place, usually for the purpose of work or preaching.
Example
The missionary itinerated throughout the region to spread the message.
El misionero viajó por toda la región para difundir el mensaje.
A2 verb /ɪnˈkri:s/

increase

aumentar
Meaning
to become or make something larger in amount, number, or degree
Example
The company plans to increase its production this year.
La empresa planea aumentar su producción este año.
B1 adjective ˌɪn.dɪˈpen.dənt

independent

independiente
Meaning
Not depending on another for livelihood or subsistence; free from outside control; not subject to another's authority.
Example
An independent institution ensures transparency in governance.
Una institución independiente garantiza la transparencia en la gobernanza.
C1 adjective /ɪnˈɔːdəbl/

inaudible

ininteligible
Meaning
Unable to be heard.
Example
Her voice was almost inaudible over the noise.
Su voz era casi ininteligible sobre el ruido.
B1 verb /ɪnˈfɔ:m/

inform

informar
Meaning
to tell someone about something; to give information
Example
Please inform me when you arrive at the airport.
por favor infórmame cuando llegues al aeropuerto.
B2 adjective /ˌɪnəˈproʊpriət/

inappropriate

inapropiado
Meaning
not suitable or proper in the circumstances
Example
It was inappropriate to talk loudly in the library.
Era inapropiado hablar en voz alta en la biblioteca.
B1 noun /ɪmˈpruːvmənt/

improvement

mejora
Meaning
the act of making something better
Example
There has been a significant improvement in his health.
Ha habido una mejora significativa en su salud.
B1 adjective /ɪmˈpruːvd/

improved

mejorado
Meaning
made better or enhanced in quality or condition
Example
Her health has significantly improved since last month.
Su salud ha mejorado significativamente desde el mes pasado.
C1 adjective /ɪnˈdiːsənt/

indecent

indecente
Meaning
not conforming to accepted standards of behavior or morality; improper or offensive
Example
He was warned for making an indecent remark during the meeting.
Fue advertido por hacer un comentario indecente.
B2 noun /ɪmˈpeɪʃəns/

impatience

impaciencia
Meaning
The state of being quickly irritated or unable to wait calmly.
Example
His impatience grew as the meeting dragged on.
Su impaciencia creció a medida que la reunión se alargaba.