infantile
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C2 adjective /ˈɪnfəntaɪl/

infantile

infantil
Meaning
characteristic of an infant; childish
Example
His infantile behavior embarrassed everyone at the meeting.
Su comportamiento infantil avergonzó a todos en la reunión.
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.
C2 adjective /aɪˈsɒ.krə.nəs/

isochronous

aconteciendo a intervalos de tiempo iguales
Meaning
Occurring at equal time intervals; in unison or synchrony.
Example
The pendulum swings are isochronous, repeating at equal intervals.
Los oscilaciones del péndulo son isócronos, repitiendo a intervalos iguales.
C2 verb /ɪnˈtɜːrpəˌleɪt/

interpolate

interpolar
Meaning
To insert something, often words, into a text or conversation; to estimate values between known data points.
Example
The editor interpolated a missing paragraph into the manuscript.
El editor interpoló un párrafo faltante en el manuscrito.
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.
C2 adjective ɪnˈdɒm.ɪ.tə.bəl

indomitable

indomable
Meaning
Impossible to subdue or defeat.
Example
Her indomitable spirit helped her overcome adversity.
Su espíritu indomable la ayudó a superar la adversidad.
C2 noun /ˈaɪ.lət/

islet

islote
Meaning
A very small island.
Example
The fishermen rested on a tiny islet before continuing their journey.
Los pescadores descansaron en un islote pequeño antes de continuar su viaje.
C2 verb /aɪˈdɒləˌtraɪz/

idolatrize

idolatrar
Meaning
To worship idols; to regard with excessive devotion or admiration.
Example
They began to idolatrize the statue as a deity.
Comenzaron a idolatrar la estatua como una deidad.
C2 adjective /aɪˈdɒlətrəs/

idolatrous

idólatra
Meaning
Excessively admiring or worshipping someone or something as an idol.
Example
The king was criticized for his idolatrous devotion to wealth.
El rey fue criticado por su devoción idólatra hacia la riqueza.
C2 adjective /ˌaɪdəˈlɑːtrɪəs/

idolatrious

idolátrico
Meaning
Excessively devoted or reverent towards idols or false gods.
Example
The ancient tribe was known for its idolatrious practices.
La antigua tribu era conocida por sus prácticas idolátricas.
C2 noun /ˈɪnroʊd/

inroad

progreso
Meaning
An advance or significant progress, often at the expense of something else.
Example
The company made significant inroads into the mobile market.
La compañía hizo avances significativos en el mercado móvil.
C2 verb /ɪnˈhjuːm/

inhume

inhumar
Meaning
to bury a dead body in the ground
Example
They inhumed the warrior with full honors.
Ellos inhumaron al guerrero con todos los honores.
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.
C2 adjective /ˌɪrɪˈmiːdiəbl̩/

irremediable

irremediable
Meaning
Impossible to cure, repair, or remedy.
Example
The damage to the ancient manuscript was irremediable.
El daño al antiguo manuscrito era irremediable.
C2 adjective /ɪnˈkɒntɪnənt/

incontinent

incontinente
Meaning
lacking control over urination or defecation; lacking self-restraint
Example
The patient was incontinent after surgery.
El paciente era incontinente después de la cirugía.
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.
C2 adjective /ˌɪnkənˈsɪdərəbl/

inconsiderable

insignificante
Meaning
Too small or unimportant to be worth considering.
Example
The donation was not inconsiderable, though smaller than expected.
La donación no fue insignificante, aunque más pequeña de lo esperado.
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.
C2 adjective ɪnˈfiː.zə.bəl

infeasible

invable
Meaning
Not possible to do easily or conveniently; impracticable.
Example
Restoring the forest may become infeasible if destruction continues.
Restaurar el bosque puede volverse inviable si la destrucción continúa.
C2 adjective /ɪmˈpælpəbəl/

impalpable

intangible
Meaning
unable to be felt by touch; difficult to grasp or understand
Example
There was an impalpable sense of fear in the room.
Había una sensación intangible de miedo en la habitación.
C2 adjective /ɪnˈæpt/

Inapt

inadecuado; inapropiado; impropio
Meaning
not suitable; inappropriate; unfit
Example
His comment was inapt for the formal meeting.
Su comentario fue inapropiado para la reunión formal.
C2 noun /aɪˈdɒlətri/

idolatry

idolatría
Meaning
The worship of idols or extreme admiration for someone or something.
Example
The priest condemned the idolatry practiced in the village.
El sacerdote condenó la idolatría practicada en el pueblo.
C2 adjective /ˌɪnfɪnɪˈtɛsɪməl/

infinitesimal

infinitesimal
Meaning
Extremely small in size or amount; so tiny as to be almost negligible.
Example
The error was so infinitesimal that it didn’t affect the results.
El error fue tan infinitesimal que no afectó los resultados.
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.
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 verb /ɪnˈdaɪt/

indite

componer
Meaning
To write or compose (literary or formal works).
Example
The poet indited a heartfelt sonnet.
El poeta compuso un soneto sincero.
C2 adjective /ɪnˈsɛndiˌɛri/

incendiary

incendiario / provocador
Meaning
designed to cause fires or stir up conflict
Example
The politician’s incendiary remarks angered the crowd.
Las declaraciones incendiarias del político enfurecieron a la multitud.
C2 adjective /ɪnˈsuːpərəbl/

insuperable

insuperable
Meaning
Impossible to overcome or surpass.
Example
The team faced insuperable challenges during the expedition.
El equipo enfrentó desafíos insuperables durante la expedición.
C2 noun /ɪkˈsɔːr.ə/

Ixora

ixora
Meaning
a tropical flowering shrub with clusters of small bright red, orange, or yellow flowers
Example
The bright red ixora bushes lined the pathway to the tropical garden.
Los arbustos de ixora de color rojo brillante alineaban el camino hacia el jardín tropical.
C2 verb /ɪnˈveɪɡəl/

inveigle

engatusar
Meaning
To persuade someone to do something by deception or flattery.
Example
She inveigled him into signing the contract.
Ella lo engañó para que firmara el contrato.
C2 adjective /ˌɪntərˈlɒkjətəri/

interlocutory

provisional
Meaning
Given during the course of a legal action, not final but temporary or provisional.
Example
The judge issued an interlocutory order to maintain the status quo until the hearing.
El juez emitió una orden provisional para mantener el statu quo hasta la audiencia.
C2 noun /ˈɪndɪkənt/

indicant

indicador
Meaning
Something that indicates or points to a fact or condition.
Example
High fever is often an indicant of infection.
La fiebre alta a menudo es un indicador de infección.
C2 noun /ɪmp/

imp

pequeño diablillo travieso
Meaning
a small mischievous devil or sprite; a playful troublemaker
Example
The child was acting like a little imp, hiding his toys everywhere.
El niño se comportaba como un pequeño diablillo, escondiendo sus juguetes por todas partes.
C2 verb /ˈɪməleɪt/

immolate

inmolar
Meaning
To kill or sacrifice, especially by burning.
Example
The protesters threatened to immolate themselves in front of the building.
Los manifestantes amenazaron con inmolarse frente al edificio.
C2 conjunction /ˌɪnəzˈmʌtʃ æz/

inasmuch-as

ya que
Meaning
Because; since.
Example
He cannot attend, inasmuch as he is unwell.
Él no puede asistir, ya que está enfermo.
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.
C2 noun /ɪnˈtɒksɪkənt/

intoxicant

intoxicante
Meaning
a substance, especially alcohol or a drug, that causes intoxication
Example
Alcohol is the most commonly used intoxicant in many cultures.
El alcohol es el intoxicante más comúnmente usado en muchas culturas.
C2 noun /ˌɪmprəˈpraɪəti/

impropriety

improiedad
Meaning
Failure to observe standards of honesty or modesty; improper behavior.
Example
The politician was accused of financial impropriety.
El político fue acusado de impropiedad financiera.
C2 noun /ˌɪnjuːˈɛndəʊ/

innuendo

indirecta
Meaning
An allusive or oblique remark or hint, typically a suggestive or disparaging one.
Example
The manager's innuendo was directed towards his competitor.
La indirecta del gerente fue dirigida hacia su competidor.
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 adjective /ɪɡˈnoʊ.bəl/

Ignoble

deshonroso; vil; indigno
Meaning
dishonorable; not noble in character; base or mean
Example
His ignoble actions betrayed his friends' trust.
Sus acciones deshonrosas traicionaron la confianza de sus amigos.
C2 noun /ɪmˈpruː.dəns/

Imprudence

imprudencia; descuido; temeridad
Meaning
the quality of being imprudent; lack of care for consequences; recklessness
Example
His financial imprudence led to bankruptcy within just two years.
Su imprudencia financiera llevó a la quiebra en solo dos años.
C2 adjective /ˌɪnˌɑːpərˈtuːn/

inopportune

momento inoportuno
Meaning
Happening at a bad or inconvenient time.
Example
His call came at the most inopportune moment.
Su llamada llegó en el momento más inoportuno.
C2 adjective /ˌɪrɪˈtriːvəbl/

irretrievable

irrecuperable
Meaning
impossible to recover or regain
Example
The documents were lost in an irretrievable way after the fire.
Los documentos se perdieron de manera irrecuperable después del incendio.
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 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.
C2 adjective /ɪmˌpɜːrˈsweɪdəbl/

impersuadable

inconvencible
Meaning
not able to be convinced or persuaded
Example
She remained impersuadable despite all our arguments.
Ella permaneció inconvencible a pesar de todos nuestros argumentos.
C2 verb /ɪnˈtɜːr/

inter

enterrar
Meaning
To bury a dead body in the ground.
Example
They decided to inter the soldier with full honors.
Ellos decidieron enterrar al soldado con todos los honores.
C2 noun /ɪˈmɒdəsti/

immodesty

immodestia
Meaning
lack of modesty or decency; behavior or attitude that is overly bold or improper
Example
The article was criticized for its tone of immodesty.
El artículo fue criticado por su tono de immodestia.
C2 noun /ɪnˈtɜːrmənt/

interment

entierro
Meaning
The act of burying a dead body in a grave or tomb.
Example
The interment took place at the family cemetery.
El entierro tuvo lugar en el cementerio familiar.
C2 noun /ˌɪməʊˈbɪləti/

immobility

inmovilidad
Meaning
The state of being unable to move.
Example
After the accident, she suffered from immobility in her legs.
Después del accidente, sufrió de inmovilidad en sus piernas.
C2 noun /ɪˈluːmɪnənt/

illuminant

iluminante
Meaning
A substance or device that produces light.
Example
The lamp acted as an illuminant in the dark cave.
La lámpara actuó como un iluminante en la cueva oscura.
C2 adjective /ɪmˈplaɪəbl/

impliable

implícito
Meaning
Capable of being implied or suggested.
Example
The meaning of the statement is not directly clear but is impliable from the context.
El significado de la declaración no es directamente claro, pero es implicable por el contexto.
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 /ˈɪnmoʊst/

inmost

más profundo
Meaning
Situated at the very heart or deepest part; most private or secret.
Example
She revealed her inmost thoughts to her closest friend.
Ella reveló sus pensamientos más profundos a su amigo más cercano.
C2 noun /ˌɪmprəˈsɑːrioʊ/

impresario

productor
Meaning
A person who organizes or finances concerts, plays, or operas.
Example
The impresario arranged a series of concerts for the rising star.
El impresario organizó una serie de conciertos para la estrella emergente.
C2 noun /ˈaɪsinəs/

iciness

frialdad
Meaning
The state of being cold in manner or temperature.
Example
There was a distinct iciness in his voice.
Había una clara frialdad en su voz.
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.
C2 noun /ˌɪnsjəˈlærəti/

insularity

insularidad
Meaning
The state of being isolated or narrow-minded.
Example
The insularity of the group prevented them from accepting new ideas.
La insularidad del grupo les impidió aceptar nuevas ideas.
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.
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.
C2 noun /ɪnˌtɜːrpəˈleɪʃən/

interpolation

interpolación
Meaning
The act of inserting something into a text or estimating values within a sequence of data.
Example
The scientist used interpolation to predict the missing data points.
El científico usó interpolación para predecir los puntos de datos faltantes.
C2 verb /ˌɪntərˈsiːd/

intercede

interceder
Meaning
to act or plead on behalf of someone in difficulty or trouble; to intervene between parties to help resolve a dispute
Example
She interceded with the teacher to give her brother another chance.
Ella intercedió con el maestro para darle otra oportunidad a su hermano.
C2 noun /ˌɪkθiˈɒlədʒɪst/

ichthyologist

icthyólogo
Meaning
A scientist who studies fish.
Example
The ichthyologist discovered a new species of fish in the river.
El icthyólogo descubrió una nueva especie de pez en el río.
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 noun /ˈɪkθiəˌsɔːrz/

ichthyosaurs

ictiosaurios (un tipo de reptil marino extinto)
Meaning
Extinct marine reptiles that resembled fish and dolphins, dominant during the Mesozoic era.
Example
Ichthyosaurs were swift predators of the ancient seas.
Los ictiosaurios eran depredadores rápidos de los mares antiguos.
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 /ɪˈmɒdərət/

immoderate

excesivo
Meaning
excessive; beyond reasonable limits
Example
He has an immoderate love for sweets.
Él tiene un amor excesivo por los dulces.
C2 noun /ˌɪmprɪˈmɑːtər/

imprimatur

imprimátur
Meaning
An official license or approval, especially to publish a book.
Example
The book was released with the official imprimatur of the church.
El libro fue lanzado con el imprimátur oficial de la iglesia.
C2 verb /ɪmˈpjuːn/

impugn

disputar la verdad, validez o honestidad de una declaración o motivo
Meaning
to dispute the truth, validity, or honesty of a statement or motive
Example
The lawyer tried to impugn the credibility of the witness.
El abogado intentó impugnar la credibilidad del testigo.
C2 adjective /ˌɪnkoʊˈɜːrsəbl̩/

incoercible

incoercible
Meaning
Not capable of being forced, compelled, or restrained.
Example
Her incoercible spirit inspired others to fight for justice.
Su espíritu incoercible inspiró a otros a luchar por la justicia.
C2 verb /ˌɪmpɔːrˈtuːnd/

importuned

insistir persistentemente
Meaning
asked someone persistently and pressingly for something
Example
She importuned her boss for a raise until he finally gave in.
Ella insistió persistentemente a su jefe por un aumento hasta que finalmente accedió.
C2 noun /ˌɪmprɪˈkeɪʃən/

imprecation

maldición
Meaning
A spoken curse or expression of strong condemnation.
Example
The angry crowd hurled imprecations at the corrupt official.
La multitud enojada lanzó maldiciones al funcionario corrupto.
C2 noun /ɪˈnɪkwɪti/

iniquity

iniquidad
Meaning
Immoral or grossly unfair behavior.
Example
The dictator's regime was marked by corruption and iniquity.
El régimen del dictador estuvo marcado por la corrupción y la iniquidad.
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.
C2 adjective /ɪnˈsɪpɪd/

insipid

insípido
Meaning
lacking flavor, interest, or excitement; dull
Example
The soup was insipid and needed more seasoning.
La sopa estaba insípida y necesitaba más condimentos.
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.
C2 noun /ɪnˈdɛntʃər/

indenture

contrato de servidumbre
Meaning
A formal legal agreement, contract, or document, often relating to work or service.
Example
In the 18th century, many workers came under indenture to work overseas.
En el siglo XVIII, muchos trabajadores estuvieron bajo un contrato de servidumbre para trabajar en el extranjero.
C2 adjective /ɪˈnjʊərd/

inured

acostumbrado
Meaning
Accustomed to something, especially something unpleasant.
Example
After years of hardship, she was inured to suffering.
Después de años de sufrimiento, ella estaba acostumbrada al dolor.
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.
C2 noun /ɪmˈpɒs.tʃər/

Imposture

engaño; fraude; impostura
Meaning
the practice of deceiving others by pretending to be someone else; fraudulent deception
Example
The elaborate imposture lasted for months before investigators uncovered the truth.
La elaborada impostura duró meses antes de que los investigadores descubrieran la verdad.
C2 verb /ɪnˈɡrɑːft/

ingraft

implantar
Meaning
To implant or fix deeply, often used in the sense of grafting an idea or quality.
Example
The teacher tried to ingraft good manners in the students.
El maestro trató de implantar buenos modales en los estudiantes.
C2 adjective /ˌɪntəˈrɒɡətəri/

interrogatory

interrogativo
Meaning
expressed in the form of a question; relating to questioning
Example
The lawyer’s interrogatory tone made the witness uncomfortable.
El tono interrogativo del abogado hizo sentir incómodo al testigo.
C2 noun /ˈaɪdɪl/

idyll

escena idílica
Meaning
An extremely happy, peaceful, or picturesque episode or scene, often idealized.
Example
Their honeymoon was an idyll on a tropical island.
Su luna de miel fue una escena idílica en una isla tropical.
C2 noun /ˈɪnfəmi/

infamy

felicidad
Meaning
the state of being well known for some bad quality or deed
Example
His name will live in infamy for the crimes he committed.
No pudo ocultar su felicidad cuando recibió el premio.
C2 noun /ˌɪnkænˈteɪʃən/

incantation

encantación
Meaning
a series of words used as a magic spell or charm
Example
The wizard chanted an incantation to summon the spirits.
El mago recitó una encantación para invocar los espíritus.
C2 verb /ˌɪmpɔːrˈtuːn/

importune

pedir insistentemente
Meaning
To ask someone persistently or pressingly for something
Example
The child importuned his mother for a new toy.
El niño importunó a su madre para que le comprara un juguete nuevo.
C2 verb /ɪmˈpeɪl/

impale

empalar
Meaning
to pierce or fix something with a sharp object
Example
The knight was impaled by the enemy’s spear.
El caballero fue empalado por la lanza del enemigo.
C2 noun /ˌɪnsəˈrɛkʃən/

insurrection

insurrección
Meaning
A violent uprising against an authority or government.
Example
The army was called in to suppress the insurrection.
El ejército fue llamado para sofocar la insurrección.
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.
C2 noun /ˈɪrɪɡənt/

irrigant

líquido de riego
Meaning
A liquid used for irrigation, especially in medical or agricultural contexts.
Example
The doctor used a sterile irrigant during the procedure.
El doctor usó un irrigante estéril durante el procedimiento.
C2 noun /ˈɪrɪtənsi/

irritancy

irritación
Meaning
the quality or state of causing irritation; legal or formal invalidation
Example
The constant noise became an irritancy to the neighbors.
El ruido constante se convirtió en una irritación para los vecinos.
C2 noun /ɪnˈvɛstɪtʃər/

investiture

ceremonia de investidura
Meaning
the formal ceremony of conferring authority, rank, or office
Example
The king held an investiture ceremony for the new knight.
El rey celebró una ceremonia de investidura para el nuevo caballero.
C2 verb /ˌɪntərˈmɪt/

intermit

interrumpir
Meaning
To suspend or stop for a time; to pause intermittently.
Example
The rain would intermit and then start again.
La lluvia se interrumpiría y luego comenzaría de nuevo.
C2 noun /ɪnˈkwɪzɪtər/

inquisitor

inquisidor
Meaning
A person who asks many questions, often in an official or harsh manner.
Example
The inquisitor demanded detailed answers from the witness.
El inquisidor exigió respuestas detalladas del testigo.
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.
C2 adjective ɪˈnɛfəbl

ineffable

inefable
Meaning
Too great or extreme to be expressed or described in words.
Example
The beauty of the landscape was ineffable.
La belleza del paisaje era inefable.
C2 noun /ɪmˈpjuːɪsəns/

impuissance

impotencia, incapacidad
Meaning
inability to take effective action; helplessness
Example
The government’s impuissance in the face of crisis frustrated the people.
La impotencia del gobierno ante la crisis frustró al pueblo.
C2 noun /ɪˌledʒ.əˈbɪl.ə.ti/

Illegibility

ilegibilidad
Meaning
the quality of being impossible or difficult to read; unclear writing or print
Example
The doctor's handwriting was famous for its illegibility among the pharmacy staff.
La letra del médico era famosa por su ilegibilidad entre el personal de la farmacia.
C2 adjective /ɪnhɑːrˈmoʊniəs/

Inharmonious

desarmónico
Meaning
lacking harmony; discordant in sound; not in tune
Example
The inharmonious sounds from the broken piano made everyone cover their ears.
Los sonidos desarmónicos del piano roto hicieron que todos se cubrieran los oídos.
C2 adjective /ˌɪnkɒntrəˈvɜːtəbl/

incontrovertible

incontrovertible
Meaning
impossible to deny or dispute; unquestionable
Example
The evidence was incontrovertible and proved his innocence.
La evidencia era incontrovertible y demostró su inocencia.
C2 noun /ˈɪndələns/

indolence

indolencia
Meaning
Avoidance of activity or exertion; laziness.
Example
His indolence kept him from finishing the project on time.
Su indolencia le impidió terminar el proyecto a tiempo.
C2 adjective /ˌɪrɪˈprəʊtʃəbl̩/

irreproachable

intachable
Meaning
Beyond criticism; faultless.
Example
The judge was known for his irreproachable integrity.
El juez era conocido por su integridad intachable.
C2 adjective /ˈɪl bred/

Ill-bred

maleducado
Meaning
lacking good manners; rude; showing poor upbringing
Example
His ill-bred behavior shocked everyone at the dinner party.
Su conducta maleducada dejó a todos sorprendidos en la cena.
C2 adjective /ˌaɪ.kə.nəˈklæs.tɪk/

iconoclastic

caracterizado por atacar o rechazar creencias, tradiciones o valores establecidos
Meaning
Characterized by attacking or rejecting cherished beliefs, traditions, or established values.
Example
Her iconoclastic views challenged the conventional wisdom of the industry.
Sus puntos de vista iconoclásticos desafiaron la sabiduría convencional de la industria.
C2 verb /ɪˈnjʊər/

inure

acostumbrar
Meaning
To become accustomed to something, especially something unpleasant.
Example
Soldiers quickly became inured to the harsh conditions.
Los soldados rápidamente se acostumbraron a las duras condiciones.
C2 verb /ɪmˈpɛnd/

impend

acontecer
Meaning
to be about to happen; to loom threateningly
Example
Dark clouds suggested that a storm was impeding.
Las nubes oscuras sugerían que se acercaba una tormenta.
C2 adjective /ɪˈnɪkwɪtəs/

iniquitous

iniquo
Meaning
grossly unfair and morally wrong
Example
Slavery was one of the most iniquitous practices in history.
La esclavitud fue una de las prácticas más iniquas de la historia.
C2 adjective /ɪnˈsuːsiənt/

insouciant

despreocupado
Meaning
Showing a casual lack of concern; carefree.
Example
He gave an insouciant shrug and walked away.
Hizo un encogimiento de hombros despreocupado y se alejó.
C2 adjective ˌɪm.pəˈtɜː.bə.bəl

imperturbable

imperturbable
Meaning
Unable to be upset or excited; not easily disturbed.
Example
His imperturbable nature made him a great leader.
Su naturaleza imperturbable lo convirtió en un gran líder.
C2 noun /ˈɪntəˌkrɒpɪŋ/

intercropping

cultivo intercalado
Meaning
The agricultural practice of cultivating two or more crops simultaneously in the same field to maximize land use efficiency and improve soil health.
Example
Intercropping can help improve soil fertility and pest control.
El cultivo intercalado puede ayudar a mejorar la fertilidad del suelo y el control de plagas.
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.
C2 adjective /ɪˈrædɪkəbəl/

irradicable

irradicable
Meaning
not able to be eradicated; impossible to destroy or remove completely
Example
The love of a mother for her child is irradicable.
El amor de una madre por su hijo es irradicable.
C2 noun /ˌɪn.ɪˈbraɪ.ə.ti/

inebriety

embriaguez
Meaning
the state of being drunk or intoxicated
Example
His frequent inebriety led to the loss of his job.
Su frecuente embriaguez le llevó a perder su trabajo.
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 /ˌɪnsəˈluːbriəs/

insalubrious

insalubre
Meaning
Unhealthy or not conducive to well-being.
Example
They moved out of the insalubrious neighborhood for the sake of their health.
Se mudaron del vecindario insalubre por el bien de su salud
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.
C2 adjective /ˌɪmpɪˈkjuːniəs/

impecunious

pobre
Meaning
Having little or no money; poor.
Example
He grew up in an impecunious family.
Creció en una familia pobre.
C2 adjective /aɪˈtɪnərənt/

itinerant

itinerante
Meaning
Traveling from place to place, especially for work or duty.
Example
The itinerant teacher moved from village to village to educate children.
El maestro itinerante se movía de pueblo en pueblo para educar a los niños.
C2 adjective /ˌɪnkɔːrˈpɔːriəl/

incorporeal

incorpóreo
Meaning
lacking a physical body; not composed of matter; intangible
Example
Ghosts are often described as incorporeal beings.
Los fantasmas a menudo se describen como seres incorpóreos.
C2 verb /ɪnˈsɪnəˌreɪt/

incinerate

incinerar
Meaning
to burn something completely until it is reduced to ashes
Example
The city decided to incinerate the medical waste for safety.
La ciudad decidió incinerar los desechos médicos por seguridad.