anthropogenic
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C2 adjective /ˌæn.θrə.pəˈdʒen.ɪk/

anthropogenic

antropogénico
Meaning
Originating in human activity; caused by humans.
Example
Climate change is largely due to anthropogenic activities.
El cambio climático se debe en gran parte a actividades antropogénicas.
C2 noun /ˈɛərəˌstæt/

aerostat

aerostato
Meaning
A lighter-than-air craft, such as a balloon, that is lifted by gas.
Example
The military used an aerostat for surveillance over the border.
El ejército usó un aerostato para vigilancia sobre la frontera.
C2 adjective /æbˈstruːs/

abstruse

abstruso
Meaning
Difficult to understand; obscure.
Example
The abstruse nature of the philosophical debate left many confused.
La naturaleza abstrusa del debate filosófico dejó a muchos confundidos.
C2 noun /əˈdɛndəm/

addendum

adenda
Meaning
an additional item or piece of information added at the end of a document or book
Example
The report included an addendum with updated statistics.
El informe incluía un adenda con estadísticas actualizadas.
C2 verb /ˈæpɪtaɪz/

appetize

estimular el apetito
Meaning
to stimulate the appetite; to make someone eager or interested
Example
The aroma of fresh bread will appetize the guests before dinner.
El aroma del pan fresco estimulará el apetito de los invitados.
C2 noun /ˈæl.mɪ.rə/

Almirah

armario
Meaning
a large cupboard or wardrobe used for storing clothes and other items
Example
I keep all my clothes in the wooden almirah.
Guardo toda mi ropa en el armario de madera.
C2 verb /ˈæmbl/

amble

caminar despacio
Meaning
To walk at a slow, relaxed pace.
Example
They amble through the park on Sunday mornings.
Ellos caminan despacio por el parque los domingos por la mañana.
C2 noun /ˌædjʊˈleɪʃən/

adulation

adulación excesiva
Meaning
excessive admiration or flattery
Example
The singer enjoyed the adulation of her fans.
La cantante disfrutó de la adulación de sus fans.
C2 verb /ˌæd ˈlɪb/

ad-lib

decir improvisado
Meaning
to speak or perform without preparation; to improvise
Example
The comedian ad-libbed a joke when the microphone failed.
El comediante improvisó un chiste cuando el micrófono falló.
C2 noun /ˌær.əˈbesk/

arabesque

diseño ornamentado
Meaning
a complex, ornate design featuring intertwined flowing lines, often used in architecture or ballet poses
Example
The ceiling was decorated with delicate arabesque patterns.
El techo estaba decorado con delicados patrones de arabesco.
C2 noun /ˈæl.baɪt/

albite

albita
Meaning
A white or colorless mineral of the feldspar group, often found in igneous rocks.
Example
Geologists discovered albite crystals in the rock sample.
Los geólogos descubrieron cristales de albita en la muestra de roca.
C2 noun /ænˈtɪlədʒi/

antilogy

antilogía
Meaning
A contradiction in terms or ideas; inconsistency in speech or writing.
Example
The politician's statement was criticized for its antilogy.
La declaración del político fue criticada por su antilogía.
C2 verb /ˌæpərˈteɪn/

appertain

pertenecer
Meaning
to relate to or be connected with something
Example
The rules only appertain to members of the club.
Las reglas solo pertenecen a los miembros del club.
C2 adjective /ˌæl.ɪˈmen.tər.i/

alimentary

relacionado con la digestión
Meaning
relating to nourishment or the organs of digestion
Example
The doctor explained the role of the alimentary canal in digestion.
El doctor explicó el papel del canal alimentario en la digestión.
C2 noun /əˈkʌmpənɪst/

accompanist

acompañante
Meaning
A person who plays a musical instrument to support a singer or another musician.
Example
The pianist served as the accompanist for the singer during the concert.
El pianista actuó como acompañante del cantante durante el concierto.
C2 noun /əˈzeɪ.li.ə/

azalea

azalea
Meaning
a flowering shrub with brightly colored blooms, often grown ornamentally
Example
The garden was full of blooming azaleas in spring.
El jardín estaba lleno de azaleas floreciendo en primavera.
C2 noun /æbˈsɪʒən/

abscission

caída de hojas
Meaning
The natural detachment of parts of a plant, typically leaves or fruit.
Example
The autumn season is marked by the abscission of leaves from trees.
La temporada de otoño se caracteriza por la caída de hojas de los árboles.
C2 verb /əˈsɛvəˌreɪt/

asseverate

aseverar
Meaning
to affirm or declare positively and earnestly
Example
He asseverated that he had never seen the man before.
Él afirmó que nunca había visto al hombre antes.
C2 noun /ˈæn.oʊd/

anode

electrodo positivo
Meaning
The positive electrode in a device such as a battery, where current flows into a polarized electrical device.
Example
The anode of the battery was corroded after long use.
El electrodo positivo de la batería se corroyó después de un uso prolongado.
C2 verb /əˈkuːtər/

accouter

equipar
Meaning
to equip or outfit, typically with military or ceremonial attire
Example
The soldiers were accoutered in full battle gear.
Los soldados estaban equipados con todo el equipo de batalla.
C2 adjective /æbˈhɔːr.ənt/

Abhorrent

aborrecible; repugnante
Meaning
extremely unpleasant and causing disgust; detestable
Example
The idea of animal cruelty is abhorrent to most people.
La idea de la crueldad animal es aborrecible para la mayoría de la gente.
C2 noun /əˈfreɪ/

affray

pelea pública
Meaning
A public fight or noisy disturbance that causes alarm.
Example
The police were called to break up an affray outside the stadium.
La policía fue llamada para romper una pelea afuera del estadio.
C2 adjective /ˈæstrəl/

astral

astral
Meaning
Relating to the stars or to spiritual, non-physical realms.
Example
Some believe in astral projection, the ability to leave the body and travel spiritually.
Algunas personas creen en la proyección astral, la capacidad de abandonar el cuerpo y viajar espiritualmente.
C2 noun /ˈæpəˌlɔːɡ/

apologue

cuento moral
Meaning
a short moral story or fable intended to teach a lesson
Example
The teacher used an old apologue to explain honesty to the children.
El maestro usó un viejo cuento moral para explicar la honestidad a los niños.
C2 noun /əˈspær.ə.ɡəs biːn/

Asparagus bean

judía de espárragos
Meaning
a long, thin green vegetable pod that grows on vines; also known as yard-long bean
Example
The asparagus bean grows up to three feet long and is commonly used in Asian cooking.
La judía de espárragos crece hasta tres pies de largo y se utiliza comúnmente en la cocina asiática.
C2 adjective /ˌækwiˈɛsənt/

acquiescent

sumiso
Meaning
ready to accept something without protest, or to do what someone else wants
Example
He gave an acquiescent smile and agreed to the plan.
Él dio una sonrisa sumisa y aceptó el plan.
C2 noun /ˌæriˈviːst/

arriviste

nueva riqueza
Meaning
A person who has recently gained wealth or status but is considered arrogant or socially unsophisticated.
Example
The business world is full of ambitious arrivistes.
El mundo de los negocios está lleno de arrivistas ambiciosos.
C2 noun /ˈɑːrtɪfɪs/

artifice

artificio
Meaning
clever or cunning devices or tricks used to deceive others
Example
The politician's charm was nothing but artifice.
El encanto del político no era más que artificio.
C2 verb /əbˈskɒnd/

abscond

fugarse
Meaning
to leave secretly and quickly, often to avoid arrest or punishment
Example
The thief tried to abscond with the stolen jewelry.
El ladrón intentó fugarse con las joyas robadas.
C2 noun /ˈæn.dʒi.əʊ.plæs.ti/

angioplasty

procedimiento médico para abrir vasos sanguíneos bloqueados o estrechados que suministran sangre al corazón
Meaning
A medical procedure to open blocked or narrowed blood vessels that supply blood to the heart.
Example
Angioplasty is now safer with robotic assistance.
La angioplastia ahora es más segura con asistencia robótica.
C2 noun /əbˈhɒrəns/

abhorrence

abominación
Meaning
a feeling of strong disgust or hatred
Example
He expressed his abhorrence of racial discrimination.
Expresó su abominación hacia la discriminación racial.
C2 noun/adjective /ˈæl.əˌbæs.tər/

alabaster

alabastro (piedra blanca mineral)
Meaning
A fine-grained, usually white variety of gypsum, often used for carving; also describes something smooth and pale like alabaster.
Example
The statue was carved from pure alabaster.
La estatua fue esculpida en puro alabastro.
C2 noun (plural) /ˈɔːspɪsɪz/

auspices

auspicio
Meaning
Patronage, support, or guidance, often used in the phrase 'under the auspices of'.
Example
The conference was held under the auspices of the United Nations.
La conferencia fue celebrada bajo los auspicios de las Naciones Unidas.
C2 adjective /ˌæpəˈplɛktɪk/

apoplectic

apoplético
Meaning
Extremely angry; furious.
Example
He was apoplectic when he heard about the unfair decision.
Estaba apoplético cuando escuchó sobre la decisión injusta.
C2 noun, verb /ˈæseɪ/

assay

ensayo
Meaning
To test or analyze the quality, purity, or content of a substance; the act of such testing.
Example
The scientists assayed the mineral sample for gold content.
Los científicos analizaron la muestra mineral para el contenido de oro.
C2 noun /əˈmæl.ɡəm/

amalgam

mezcla
Meaning
a mixture or blend of different things
Example
The new policy is an amalgam of several previous laws.
La nueva política es una mezcla de varias leyes anteriores.
C2 verb /ˈæmərˌtaɪz/

amortize

amortizar
Meaning
To gradually reduce or pay off a debt with regular payments.
Example
They plan to amortize the mortgage over 20 years.
Ellos planean amortizar la hipoteca en 20 años.
C2 noun /ˈæpəplɛksi/

apoplexy

Pérdida súbita de conciencia o control debido a un derrame cerebral o rabia extrema
Meaning
A sudden loss of consciousness or control due to stroke or extreme anger.
Example
The old man nearly had apoplexy when he heard the shocking news.
El anciano casi sufrió apoplejía cuando escuchó la noticia impactante.
C2 adjective /ˌæktʃuˈɛəriəl/

actuarial

actuarial
Meaning
Relating to actuaries or their work of analyzing financial risk and uncertainty, especially in insurance and pensions.
Example
The company relied on actuarial reports to set insurance premiums.
La empresa confió en los informes actuariales para fijar las primas de seguros.
C2 adjective /ˌæf.əˈrɪs.tɪk/

aphoristic

estilo aforístico
Meaning
expressed in the style of a short, witty saying
Example
Her writing style is concise and aphoristic.
Su estilo de escritura es conciso y aforístico.
C2 adjective /ɑːrˈbɔːr.i.əl/

arboreal

relativo a los árboles
Meaning
Relating to trees or living in trees; tree-dwelling.
Example
Monkeys are arboreal animals that spend most of their time in trees.
Los monos son animales arbóreos que pasan la mayor parte de su tiempo en los árboles.
C2 noun /ˈeɪ.pi.ˌɛr.i/

apiary

colmenar
Meaning
A place where beehives are kept, especially for commercial purposes.
Example
The farmer built a new apiary to produce organic honey.
El agricultor construyó un nuevo colmenar para producir miel orgánica.
C2 noun /əˈkriːʃən/

accretion

acreción
Meaning
The process of growth or increase, typically by the gradual accumulation of additional layers or matter.
Example
The accretion of wealth allowed him to invest in various projects.
La acumulación de riqueza le permitió invertir en varios proyectos.
C2 noun /ˈɑːriə/

aria

pieza vocal en solitario
Meaning
a solo vocal piece with instrumental accompaniment, typically in an opera
Example
The soprano performed a moving aria during the second act.
La soprano interpretó un aria conmovedora durante el segundo acto.
C2 noun /əˈdjuː/

adieu

adiós
Meaning
A farewell or goodbye, often used in a formal or poetic sense.
Example
She bid her friends adieu before leaving for France.
Ella se despidió de sus amigos antes de partir hacia Francia.
C2 noun /əˈfleɪtəs/

afflatus

inspiración divina
Meaning
a sudden divine inspiration or creative impulse
Example
The poet wrote the verses under a sudden afflatus of inspiration.
El poeta escribió los versos bajo una súbita inspiración divina.
C2 verb /əbˈhɔːr/

abhor

aborrecer
Meaning
to regard with disgust and hatred
Example
She abhors cruelty to animals.
Ella aborrece la crueldad hacia los animales.
C2 noun /ˈætəvɪzəm/

atavism

atavismo
Meaning
The recurrence of traits or characteristics from a remote ancestor.
Example
The scientist noted atavism in the child’s physical features.
El científico observó atavismo en las características físicas del niño.
C2 verb /əˈpraɪz/

apprise

informar
Meaning
to inform or notify someone
Example
The manager will apprise the staff of the new policies.
El gerente informará al personal sobre las nuevas políticas.
C2 noun /əˈplɒm/

aplomb

aplomo
Meaning
Complete and confident self-assurance or poise.
Example
She handled the difficult questions with aplomb.
Ella manejó las preguntas difíciles con aplomo.
C2 noun ˈɔː.tɑː.ki

autarky

autarquía, autosuficiencia
Meaning
Economic independence or self-sufficiency; a policy of establishing a self-sufficient national economy.
Example
Some nations aim for autarky to reduce reliance on imports.
Algunas naciones buscan la autarquía para reducir la dependencia de las importaciones.
C2 adjective əˈdrɔɪt

adroit

habilidoso, astuto, hábil
Meaning
clever or skillful in using the hands or mind.
Example
She is adroit at solving complex problems.
Ella es hábil para resolver problemas complejos.
C2 noun (plural) /əˈspɜːr.ʒənz/

aspersions

aspersión
Meaning
Critical or slanderous remarks; multiple attacks on reputation.
Example
The politician rejected the aspersions cast against him.
El político rechazó las aspersiones lanzadas contra él.
C2 noun /ˌɛərəˈstætɪks/

aerostatics

aerostática
Meaning
The branch of physics that deals with the equilibrium of air and gases and the forces acting on bodies in them.
Example
Aerostatics is essential for understanding how balloons float.
La aerostática es esencial para entender cómo flotan los globos.
C2 noun /ˈænɪməlˌkjuːl/

animalcule

animalcule
Meaning
A microscopic animal, especially a protozoan or other minute organism.
Example
The scientist observed an animalcule moving under the microscope.
El científico observó un animalcule moviéndose bajo el microscopio.
C2 noun /ˈeɪʒən siː bæs/

Asian sea bass

lubina asiática
Meaning
a large predatory fish found in coastal waters and estuaries of the Indo-Pacific region, prized for its white meat
Example
Asian sea bass is highly valued in aquaculture for its fast growth.
La lubina asiática es muy valorada en la acuicultura por su rápido crecimiento.
C2 verb /ænˈtɪpəθaɪz/

antipathize

antipatizar
Meaning
to feel or express a strong dislike or aversion toward something or someone
Example
He seemed to antipathize with the new management's approach.
Parece que él antipatiza con el enfoque de la nueva administración.
C2 adjective /æbˈstiːmiəs/

abstemious

abstemio
Meaning
not allowing oneself much food or drink; marked by moderation
Example
She lived an abstemious life, avoiding all luxuries.
Ella vivió una vida abstemio, evitando todos los lujos.
C2 noun /ˌæk.rəˈfoʊ.bi.ə/

acrophobia

miedo a las alturas
Meaning
An extreme or irrational fear of heights.
Example
Her acrophobia prevented her from climbing the tall building.
Su acrofobia le impidió subir al edificio alto.
C2 noun /əˈbeɪəns/

abeyance

suspensión temporal
Meaning
a state of temporary suspension or inactivity
Example
The project was held in abeyance until funds became available.
El proyecto fue suspendido hasta que los fondos estuvieran disponibles.
C2 noun/adjective /ælˈbaɪ.noʊ/

albino

albino (persona/animal sin pigmentación)
Meaning
A person, animal, or plant lacking normal pigmentation, resulting in pale skin, hair, and eyes.
Example
The albino rabbit had white fur and pink eyes.
El conejo albino tenía pelaje blanco y ojos rosados.
C2 noun /əˈnæb.ə.lɪ.zəm/

anabolism

anabolismo
Meaning
The set of metabolic pathways that construct molecules from smaller units, involving tissue repair and growth.
Example
Anabolism is essential for muscle growth and tissue repair.
El anabolismo es esencial para el crecimiento muscular y la reparación de tejidos.
C2 adjective /əˈpɒ.krɪ.fəl/

apocryphal

dudoso
Meaning
Of doubtful authenticity, though widely circulated as true.
Example
The story about him saving the village is probably apocryphal.
La historia de él salvando el pueblo probablemente es dudosa.
C2 adjective /əˈmɔːrfəs/

amorphous

amórfico
Meaning
Lacking a clear shape or form; without a defined structure.
Example
The plan remained amorphous and lacked concrete details.
El plan permaneció amorfo y carecía de detalles concretos.
C2 noun /əˈluː.vi.əm/

alluvium

aluvión
Meaning
Fertile soil deposited by flowing water, especially in riverbanks.
Example
The alluvium in riverbanks is highly fertile for agriculture.
El aluvión en las orillas de los ríos es muy fértil para la agricultura.
C2 noun /ˌænɪˈmɒmɪtər/

anemometer

anemómetro
Meaning
An instrument used to measure the speed and direction of wind.
Example
The scientist used an anemometer to record the wind speed during the storm.
El científico utilizó un anemómetro para registrar la velocidad del viento durante la tormenta.
C2 noun /ˈæmpərˌsænd/

ampersand

ampersand
Meaning
The symbol '&' used to represent the word 'and'.
Example
Use an ampersand instead of writing the word 'and' in the company name.
Usa un ampersand en lugar de escribir la palabra 'y' en el nombre de la empresa.
C2 noun /ˌæk.wiˈes.əns/

acquiescence

acuerdo tácito
Meaning
The reluctant acceptance of something without protest.
Example
His silent acquiescence to unfair rules was surprising.
Su silencioso acuerdo tácito con las reglas injustas fue sorprendente.
C2 adjective /eɪˈrɪðmɪk/

arrhythmic

arítmico
Meaning
Lacking a regular rhythm or beat.
Example
The patient had an arrhythmic heartbeat.
El paciente tenía un latido cardíaco arítmico.
C2 verb /əˈbrɪdʒ/

abridge

abreviar
Meaning
to shorten a text without losing its meaning
Example
The editor decided to abridge the long novel for young readers.
El editor decidió abreviar la larga novela para los jóvenes lectores.
C2 noun /əˈpɒstəsi/

apostasy

apostasía
Meaning
The abandonment or renunciation of a religious or political belief.
Example
His public apostasy shocked his followers.
Su apostasía pública sorprendió a sus seguidores.
C2 noun /ˌækwəˈpɒnɪks/

aquaponics

acuaponia
Meaning
A system of aquaculture in which the waste produced by farmed fish or other aquatic animals supplies nutrients for plants grown hydroponically.
Example
Aquaponics efficiently utilizes water by integrating fish and plant farming.
La acuaponia utiliza el agua de manera eficiente integrando la cría de peces y el cultivo de plantas.
C2 verb /əˈkɒst/

accost

abordar de manera agresiva
Meaning
to approach and speak to someone boldly or aggressively
Example
The reporter was accosted by protesters outside the courthouse.
El reportero fue acosado por los manifestantes fuera del tribunal.
C2 noun /ˈɑːr.bɪ.trɑːʒ/

arbitrage

arbitraje
Meaning
The simultaneous buying and selling of securities in different markets to take advantage of differing prices.
Example
Investors use arbitrage to make profits in global markets.
Los inversionistas utilizan el arbitraje para obtener ganancias en los mercados globales.
C2 adjective /ˌæntɪdəˈluːviən/

antediluvian

anticuado
Meaning
extremely old-fashioned; belonging to the time before the biblical flood
Example
His views on women are positively antediluvian.
Sus opiniones sobre las mujeres son positivamente anticuadas.
C2 adjective /ˈæʒər/

azure

azur
Meaning
A bright blue color like that of a clear sky.
Example
The clear sky was painted in a deep shade of azure.
El cielo claro fue pintado con un profundo tono de azul.
C2 adjective /ˈærənt/

arrant

completo, absoluto
Meaning
complete or utter (used negatively, e.g., 'arrant nonsense')
Example
His excuse was arrant nonsense.
Su excusa fue una tontería absoluta.
C2 adjective /ˌæntɪməˈrɪdiən/

antemeridian

antes del mediodía
Meaning
Relating to the time before noon; occurring in the morning.
Example
She scheduled all her important meetings during the antemeridian hours.
Ella programó todas sus reuniones importantes durante las horas antes del mediodía.
C2 noun /əˈstɪɡmətɪzəm/

astigmatism

astigmatismo
Meaning
An eye defect causing blurred vision due to irregular curvature of the cornea or lens.
Example
She wears glasses to correct her astigmatism.
Ella usa gafas para corregir su astigmatismo.
C2 adverb /əˈskæns/

askance

despectivamente
Meaning
With suspicion, mistrust, or disapproval.
Example
She looked askance at his unusual proposal.
Ella miró despectivamente su propuesta inusual.
C2 noun /ˈɑːrkeɪˌɪzəm/

archaism

arcaísmo
Meaning
a word, expression, or style of language that is no longer in everyday use
Example
The poem is full of archaisms that give it an old-fashioned flavor.
El poema está lleno de arcaísmos que le dan un sabor anticuado.
C2 noun /ˌɔːltərˈkeɪʃən/

altercation

altercado, pelea
Meaning
a noisy argument or quarrel
Example
There was a brief altercation between the two drivers.
Hubo una breve altercación entre los dos conductores.
C2 adjective /əˈkjuː.zəˌtɔːr.i/

accusatory

acusatorio
Meaning
Suggesting blame or indicating someone has done wrong.
Example
He gave her an accusatory glance.
Él le dio una mirada acusatoria.
C2 noun /əˈpɒθəˌkɛri/

apothecary

boticario
Meaning
A historical term for a person who prepared and sold medicines and drugs.
Example
The village apothecary provided remedies for many common illnesses.
El boticario del pueblo proporcionó remedios para muchas enfermedades comunes.
C2 noun əˈkjuː.ə.ti

acuity

agudeza
Meaning
Sharpness or keenness of thought, vision, or hearing.
Example
His intellectual acuity made him a brilliant scientist.
Su agudeza intelectual lo convirtió en un brillante científico.
C2 noun /ˈænɪ siːd/

Ani seed

anís
Meaning
Small aromatic seeds used as a spice and for medicinal purposes, with a sweet licorice-like flavor
Example
Anise seeds are often used in traditional desserts and teas.
Las semillas de anís se usan con frecuencia en postres y tés tradicionales.
C2 noun /ˌænəlˈdʒiːziə/

analgesia

analgesia
Meaning
The inability to feel pain while still conscious.
Example
The doctor induced analgesia before performing the procedure.
El doctor indujo la analgesia antes de realizar el procedimiento.
C2 noun /ˈænɪməs/

animus

animosidad / propósito
Meaning
A strong feeling of hostility; motivation or purpose behind an action.
Example
His speech was driven by animus against the policy.
Su discurso fue impulsado por animosidad contra la política.
C2 noun /ˈæntɪkwɛri/

antiquary

antiquario
Meaning
A person who studies, collects, or deals in antiques or ancient objects.
Example
The antiquary spent years collecting rare manuscripts from the medieval period.
El antiquario pasó años recolectando manuscritos raros del período medieval.
C2 noun /ˈɔːtɑːrki/

autarchy

autarquía
Meaning
A system of self-sufficiency where a state or community is economically independent.
Example
The nation attempted autarchy to reduce reliance on imports.
La nación intentó autarquía para reducir la dependencia de las importaciones.
C2 noun /ˌæbsəˈluːʃən/

absolution

absolución
Meaning
formal release from guilt, obligation, or punishment
Example
The priest granted him absolution for his sins.
El sacerdote le concedió la absolución por sus pecados.
C2 noun /əˌkædəˈmɪʃən/

academician

académico
Meaning
a member of an academy; a scholar or expert in a field of study
Example
The academicians gathered to discuss the future of education.
Los académicos se reunieron para discutir el futuro de la educación.
C2 noun /ˈɪəri/ or /ˈɛəri/

aery

nido del águila
Meaning
An eagle’s nest, or a lofty, airy dwelling.
Example
The eagle perched proudly near its aery high on the cliff.
El águila se posó orgullosamente cerca de su nido alto en el acantilado.
C2 adjective /ˈeɪkwiəs/

aqueous

acuoso
Meaning
related to or containing water; watery
Example
The solution was in an aqueous form.
La solución estaba en forma acuosa.
C2 noun əˈlæk.rə.t̬i

alacrity

disposición rápida y alegre
Meaning
Brisk and cheerful readiness.
Example
He accepted the challenge with alacrity.
Aceptó el desafío con alacridad.
C2 noun /ˈiːɒn/ or /ˈiːən/

aeon

eón
Meaning
An indefinitely long period of time; an age or eternity.
Example
Dinosaurs roamed the Earth millions of aeons ago.
Hace millones de eones que los dinosaurios vagaban por la Tierra.
C2 verb /əˈniːl/

anneal

endurecer con calor
Meaning
To heat and cool metal or glass to make it stronger or less brittle.
Example
The blacksmith annealed the steel to improve its durability.
El herrero aniló el acero para mejorar su durabilidad.
C2 adjective /ədˈmɒnɪtəri/

admonitory

amonestador
Meaning
giving or conveying a warning or reprimand
Example
She gave him an admonitory glance.
Ella le dio una mirada amonestadora.
C2 adverb /əˈbɛd/

abed

en la cama
Meaning
in bed
Example
She stayed abed all day due to illness.
Se quedó en la cama todo el día debido a la enfermedad.
C2 adjective /ˌæk.si.əˈmæt.ɪk/

axiomatic

autoevidente, obviamente cierto sin necesidad de prueba
Meaning
Self-evident, obviously true without need for proof
Example
It is axiomatic that hard work leads to success.
Es autoevidente que el trabajo duro conduce al éxito.
C2 verb /əˈɡlɒməˌreɪt/

agglomerate

aglutinar
Meaning
To collect or form into a mass or group.
Example
The dust particles began to agglomerate into larger clusters.
Las partículas de polvo comenzaron a aglomerarse en grupos más grandes.
C2 noun /əˈklɪvɪti/

acclivity

pendiente ascendente
Meaning
An upward slope or incline on the ground.
Example
The hikers struggled as they climbed the steep acclivity.
Los excursionistas lucharon mientras subían la empinada pendiente ascendente.
C2 verb əˈmiːljəreɪt

ameliorate

mejorar, perfeccionar
Meaning
To make better; improve or enhance something.
Example
The new policies are designed to ameliorate living conditions.
Las nuevas políticas están diseñadas para mejorar las condiciones de vida.
C2 verb /ˈæntɪdeɪtɪd/

antedated

fechado anteriormente
Meaning
assigned to an earlier date than the actual one; happened earlier
Example
The letter was antedated to appear more official.
La carta fue antedatada para parecer más oficial.
C2 noun /ˌæntiˈsaɪkloʊn/

anticyclone

anticiclón
Meaning
A weather system with high atmospheric pressure at its center, usually bringing calm and clear conditions.
Example
An anticyclone brought sunny weather across the region.
Un anticiclón trajo clima soleado en toda la región.
C2 adjective /ˈæn.ə.daɪn/

anodyne

inofensivo, que alivia el dolor
Meaning
Not likely to cause offense; bland or harmless. Also refers to something that relieves pain.
Example
The speaker’s anodyne remarks avoided controversy.
Los comentarios anodinos del orador evitaron la controversia.
C2 adjective, adverb /əˈfʊt/

afoot

en marcha
Meaning
In progress; happening or being prepared.
Example
There are several new projects afoot in the company.
Hay varios proyectos nuevos en marcha en la empresa.
C2 adjective /ɔːˈrɪfərəs/

auriferous

aurífero
Meaning
Containing or producing gold.
Example
The miners discovered an auriferous vein in the mountains.
Los mineros descubrieron una veta aurífera en las montañas.
C2 adjective /eɪˈsɛptɪk/

aseptic

libre de gérmenes
Meaning
Free from contamination caused by harmful microorganisms; sterile.
Example
Surgeons must work in an aseptic environment to prevent infection.
Los cirujanos deben trabajar en un ambiente aséptico para prevenir infecciones.
C2 adjective /ɑːrˈθʊr.i.ən/

arthurian

relacionado con Arthur
Meaning
Relating to the legendary King Arthur and the stories surrounding him.
Example
The novel is set in an Arthurian world of knights and castles.
La novela está ambientada en un mundo artúrico de caballeros y castillos.
C2 verb /əˈvɜːr/

aver

afirmar
Meaning
to state or assert something confidently and strongly
Example
She averred that she was innocent.
Ella afirmó que era inocente.
C2 noun /ˈæl.kə.laɪ ækt/

Alkali Act

Ley de Alcalinidad
Meaning
A British law passed in 1863 to regulate the emission of hydrochloric acid gas from alkali works, representing one of the first pieces of environmental legislation.
Example
The Alkali Act of 1863 was one of the first environmental laws.
La Ley de Alcalinidad de 1863 fue una de las primeras leyes ambientales.
C2 adverb /ˌeɪˈmɔːrəli/

amorally

inmoralmente
Meaning
In a way that shows no concern about whether behavior is morally right or wrong.
Example
He acted amorally, ignoring the consequences of his actions.
Actuó inmoralmente, ignorando las consecuencias de sus acciones.
C2 noun /ˈækəlaɪt/

acolyte

acólito
Meaning
a follower or assistant, especially in a religious service or as a devoted supporter of a leader
Example
The senator arrived with a small group of acolytes who handled the press.
El senador llegó con un pequeño grupo de acólitos que se encargaban de la prensa.
C2 adjective /ˈæk.rɪd/

Acrid

ácido y fuerte
Meaning
having a strong, unpleasant, and sharp smell or taste
Example
The acrid smoke from the fire made everyone cough.
El humo acrid del fuego hizo toser a todos.
C2 noun /ˌænθrəpəˈsɛntrɪzəm/

anthropocentrism

antropocentrismo
Meaning
The belief that human beings are the most important or central element of existence.
Example
Anthropocentrism often shapes environmental policies.
El antropocentrismo a menudo da forma a las políticas medioambientales.
C2 noun /əbˈdʌktər/

abductor

secuestrador
Meaning
a person who kidnaps or forcibly takes someone away
Example
The police arrested the abductor after a nationwide search.
La policía arrestó al secuestrador después de una larga búsqueda.
C2 adjective /ˌæp.rɪˈhen.sə.bəl/

Apprehensible

comprensible
Meaning
able to be understood or grasped; comprehensible
Example
The complex theory became apprehensible after the professor's explanation.
La teoría compleja se volvió comprensible después de la explicación del profesor.
C2 adjective /əˈbɑː.mə.nə.bəl/

abominable

abominable
Meaning
causing moral revulsion; extremely unpleasant
Example
The prisoners were kept in abominable conditions.
Los prisioneros fueron mantenidos en condiciones abominables.
C2 noun /ˈækmi/

acme

cima
Meaning
the highest point of achievement or excellence
Example
Winning the award was the acme of his career.
Ganar el premio fue la cima de su carrera.
C2 noun /ˈeɪ.viˌɛr.i/

aviary

aviario
Meaning
a large enclosure for keeping birds
Example
The zoo built a new aviary for exotic parrots.
El zoológico construyó un nuevo aviario para los loros exóticos.