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C1 adjective ˈæl.ɡə.rɪ.ðəm drɪv.ən

algorithm-driven

impulsado por algoritmos.
Meaning
Controlled or powered by computer algorithms.
Example
Algorithm-driven systems increase accuracy.
Los sistemas impulsados por algoritmos aumentan la precisión.
C1 noun /ˈælɪbaɪ/

alibi

coartada
Meaning
A claim or piece of evidence that one was elsewhere when an act, typically a crime, was committed.
Example
She had a strong alibi that proved she was at the cinema during the theft.
Ella tenía una coartada sólida que demostró que estaba en el cine durante el robo.
C1 noun ˈæ.sɛt ˌæl.əˈkeɪ.ʃən

asset allocation

asignación de activos
Meaning
An investment strategy that aims to balance risk and reward by apportioning a portfolio's assets according to an individual's goals, risk tolerance, and investment horizon.
Example
Proper asset allocation is key to financial growth.
Una correcta asignación de activos es clave para el crecimiento financiero.
C1 adjective /ˈædʒɪteɪtɪd/

Agitated

agitado; inquieto; nervioso; excitado de manera negativa
Meaning
disturbed; anxious; restless; excited in a negative way
Example
He became agitated when he heard the bad news.
Se agitou cuando escuchó las malas noticias.
C1 noun /əˈrɪəz/

arrears

deuda pendiente
Meaning
Money that is owed and should have been paid earlier.
Example
She was months in arrears with her electricity bill.
Estaba meses en deuda con su factura de electricidad.
C1 verb /əˈfɪks/

affix

adjuntar / pegar
Meaning
to attach or stick something firmly to another thing
Example
Please affix the stamp to the envelope.
Por favor, adjunte el sello al sobre.
C1 adjective /əˈdɒptɪv/

adoptive

adoptivo
Meaning
relating to the adoption of a child or the act of taking something as one’s own
Example
She grew up in a loving adoptive family.
Ella creció en una familia adoptiva cariñosa.
C1 noun /ˈæpəθi/

apathy

apatía
Meaning
a lack of interest, enthusiasm, or concern
Example
The students showed apathy towards the new rules.
Los estudiantes mostraron apatía hacia las nuevas reglas.
C1 noun /əˌtɜːni ˈdʒɛnərəl/

attorney-general

fiscal general
Meaning
The chief legal officer of a state or country.
Example
The attorney-general announced new reforms to strengthen justice.
El fiscal general anunció nuevas reformas para fortalecer la justicia.
C1 noun /ˈælkoʊv/

alcove

rinconcito
Meaning
A small recessed section of a room or a nook.
Example
She placed a reading chair in the alcove near the window.
Ella colocó una silla de lectura en el rincón cerca de la ventana.
C1 adjective /ˈædʒ.aɪl/

agile

rápido y flexible
Meaning
able to move quickly and easily; quick and adaptable in thinking or action
Example
The startup team was agile in responding to market changes.
El equipo de la startup fue ágil al responder a los cambios del mercado.
C1 noun /əˈlɒt.mənt/

allotment

asignación, reparto
Meaning
The distribution or allocation of something, especially resources or portions.
Example
Each department received an allotment of resources.
Cada departamento recibió una asignación de recursos.
C1 noun /ˌɔːkʃəˈnɪər/

auctioneer

subastador
Meaning
a person who conducts auctions by calling out bids and selling items to the highest bidder
Example
The auctioneer quickly raised the price as bidders competed for the painting.
El subastador aumentó rápidamente el precio mientras los compradores competían.
C1 noun /ˌædməˈnɪʃən/

admonition

amonestación
Meaning
a firm warning or reprimand; gentle or earnest advice
Example
He received an admonition for his careless work.
Él recibió una amonestación por su trabajo descuidado.
C1 verb /əˈluːd/

allude

aludir
Meaning
To refer to something indirectly or casually.
Example
The professor alluded to Shakespeare during the lecture.
El profesor aludió a Shakespeare durante la conferencia.
C1 noun /ˈæptɪˌtjuːd/

aptitude

aptitud
Meaning
a natural ability or talent to do something well
Example
She has a strong aptitude for learning new languages.
Ella tiene una gran aptitud para aprender nuevos idiomas.
C1 verb /əˈbaʊnd/

abound

abundar
Meaning
To exist in large numbers or amounts.
Example
Opportunities abound in the field of technology.
Las oportunidades abundan en el campo de la tecnología.
C1 adjective /ˈædəmənt/

Adamant

terco; obstinado; firme; inflexible
Meaning
একগুঁয়ে; জেদী; দৃঢ়সংকল্প; অনমনীয়;
Example
She was adamant about her decision to leave the company.
Ella fue terca con su decisión de dejar la empresa.
C1 noun /ədˈhɪərənt/

adherent

seguidor
Meaning
a person who supports or follows a particular belief, cause, or leader
Example
He is a strong adherent of democratic values.
Él es un fuerte seguidor de los valores democráticos.
C1 noun /ˌætəˈʃeɪ/

attache

agregado diplomático
Meaning
A person officially assigned to the staff of a diplomatic mission, often with a specific area of responsibility.
Example
The cultural attache organized an art exhibition in the embassy.
El agregado cultural organizó una exposición de arte en la embajada.
C1 noun /ˌævɒ̃ˈɡɑːrd/

avantgarde

vanguardia
Meaning
people or works that are innovative, experimental, and ahead of their time
Example
The avantgarde of the 20th century reshaped modern art.
La vanguardia del siglo XX remodeló el arte moderno.
C1 noun /ˈæd.vənt/

advent

advenimiento
Meaning
The arrival of a notable person, thing, or event.
Example
The advent of the internet changed the way people communicate.
El advenimiento de Internet cambió la forma en que las personas se comunican.
C1 noun /ˈæbsɛs/

abscess

absceso
Meaning
A swollen area within body tissue containing pus, usually caused by infection.
Example
The dentist treated the abscess in his tooth.
El dentista trató el absceso en su diente.
C1 noun ænˈtɪk.wə.ti

antiquity

antigüedad
Meaning
The ancient past, especially the period of classical and other human civilizations before the Middle Ages.
Example
The ruins are a reminder of the city's antiquity.
Las ruinas son un recordatorio de la antigüedad de la ciudad.
C1 noun /əˌlɪtəˈreɪʃən/

alliteration

aliteración
Meaning
the occurrence of the same consonant sound at the beginning of words in close succession
Example
She used alliteration in her poem to add musicality.
Ella usó aliteración en su poema para agregar musicalidad.
C1 adverb /əˈnjuː/

anew

de nuevo
Meaning
In a new or different way; once more.
Example
After the failure, she decided to start her life anew.
Después del fracaso, decidió comenzar su vida de nuevo.
C1 adjective /ˈɔːdəˌtɔːri/

auditory

auditivo
Meaning
Relating to the sense of hearing.
Example
The lecture was designed to enhance students' auditory learning skills.
La conferencia fue disenada para mejorar las habilidades de aprendizaje auditivo de los estudiantes.
C1 noun /ɔːˈtɒmətən/

automaton

máquina automática
Meaning
A machine that works automatically; also refers to a person who behaves like a machine, without thinking.
Example
He worked like an automaton, without showing any emotion.
Él trabajaba como un autómata, sin mostrar ninguna emoción.
C1 adjective /ˈɑːr.dənt/

Ardent

ardiente; entusiasta; fervoroso
Meaning
very enthusiastic; passionate; fervent
Example
She is an ardent supporter of environmental conservation.
Ella es una ferviente defensora de la conservación ambiental.
C1 adjective ˈeɪlɪəneɪtɪd

alienated

alienado
Meaning
Feeling isolated or estranged; disconnected from others or society.
Example
Alienated students are more prone to delinquency.
Los estudiantes alienados son más propensos a la delincuencia.
C1 noun əˌsɪm.ɪˈleɪ.ʃən

Assimilation

asimilación
Meaning
Connecting new information with existing knowledge
Example
Proper assimilation of knowledge leads to effective learning.
La correcta asimilación del conocimiento conduce a un aprendizaje efectivo.
C1 verb /ˈænɪmeɪt/

animate

animar
Meaning
to bring to life or make lively; to create animation for films or cartoons
Example
The artist will animate the characters for the movie.
El artista animará los personajes para la película.
C1 noun /əˈbændənmənt/

abandonment

abandono
Meaning
the act of leaving someone or something behind completely; the state of being deserted
Example
The child suffered deep emotional pain because of abandonment.
El niño sufrió un profundo dolor emocional por el abandono.
C1 noun /ɑːrˈmɑːdə/

armada

flota de guerra
Meaning
A large fleet of warships.
Example
The Spanish Armada sailed against England in 1588.
La Armada Española navegó contra Inglaterra en 1588.
C1 noun /əˈdʒeɪsənsi/

adjacency

adyacencia
Meaning
The state of being next to or adjoining something else.
Example
The adjacency of the two buildings made it easy to connect them.
La adyacencia de los dos edificios hizo fácil conectarlos.
C1 noun /əˌfɪl.iˈeɪ.ʃən/

affiliation

afiliación
Meaning
The state or process of affiliating or being affiliated; a connection or association.
Example
His affiliation with the company lasted for a decade.
Su afiliación con la empresa duró una década.
C1 noun /æmˈniːʒə/

amnesia

amnesia
Meaning
A partial or total loss of memory, usually caused by injury, illness, or psychological trauma.
Example
After the accident, she suffered from amnesia and could not remember her own name.
Después del accidente, sufrió de amnesia y no pudo recordar su propio nombre.
C1 noun ˈæf.lu.əns

affluence

afluencia
Meaning
The state of having a great deal of money; wealth.
Example
His affluence allowed him to travel the world.
Su afluencia le permitió viajar por el mundo.
C1 noun, adverb /ˈeɪliəs/

alias

alias
Meaning
A false or assumed identity; also used to mean 'otherwise called'.
Example
The criminal was known by the alias 'Shadow'.
El criminal era conocido por el alias 'Sombra'.
C1 adjective /əˈfɜːrmətɪv/

affirmative

afirmativo
Meaning
expressing agreement, approval, or a positive response
Example
She gave an affirmative answer to the proposal.
Ella dio una respuesta afirmativa a la propuesta.
C1 adjective /ɔːˈdeɪ.ʃəs/

Audacious

audaz
Meaning
showing willingness to take bold risks; daring
Example
His audacious plan to climb the mountain without proper equipment shocked everyone.
Su plan audaz de escalar la montaña sin el equipo adecuado sorprendió a todos.
C1 adjective /ˈɑːrɡjuəbl/

arguable

discutible
Meaning
open to debate or discussion; not certain and capable of being argued for or against
Example
It is arguable that technology has improved our quality of life.
Es discutible que la tecnología haya mejorado nuestra calidad de vida.
C1 adjective ˌæɡrɪˈkʌltʃərəli sɪɡˈnɪfɪkənt

agriculturally significant

importante relacionado con la agricultura
Meaning
Important or crucial related to farming and agriculture
Example
Winter is agriculturally significant for crop production.
El invierno es importante para la producción de cultivos.
C1 noun /ænˈtæɡənɪzəm/

antagonism

antagonismo
Meaning
active hostility or opposition
Example
There was clear antagonism between the two political parties.
Había un claro antagonismo entre los dos partidos políticos.
C1 adjective /ˈɑːtfəl/

Artful

astuto; hábil; ingenioso
Meaning
clever or skillful, especially in a cunning way
Example
She gave an artful answer that avoided the real question.
Ella dio una respuesta astuta que evitó la verdadera pregunta.
C1 noun ˈæŋkərɪdʒ

anchorage

ancoraje
Meaning
A secure holding place; a place where ships can anchor safely.
Example
The boat was anchored near the shore for safety.
El bote fue anclado cerca de la orilla por seguridad.
C1 noun /əˈsem.bli ˈseʃ.ən/

assembly session

sesión de asamblea
Meaning
A formal meeting where representatives gather to discuss and make decisions on important matters.
Example
The assembly session discussed global challenges.
La sesión de asamblea discutió los desafíos globales.
C1 adverb /ˈeɪ.mi.ə.bli/

Amiably

amistosamente, de manera amistosa
Meaning
in a friendly and pleasant manner
Example
They discussed the issue amiably without any arguments.
Ellos discutieron el tema amigablemente sin discusiones.
C1 verb /ˈædʒ.ɪ.teɪt/

agitate

agitar, provocar
Meaning
to stir up feelings or disturb; to campaign for change
Example
The protesters agitated for better working conditions.
Los manifestantes agitaron por mejores condiciones laborales.
C1 noun ˌæɡ.rəʊˈkem.ɪ.kəl

agrochemical

agroquímico
Meaning
A chemical product used in agriculture, especially a pesticide or fertilizer.
Example
Excessive use of agrochemicals can degrade soil quality.
El uso excesivo de agroquímicos puede degradar la calidad del suelo.
C1 adverb /əˈlɒft/

aloft

en el aire
Meaning
Up in or into the air; overhead.
Example
The kite was flying aloft in the clear sky.
La cometa volaba alto en el cielo claro.
C1 noun /ˌæn.ɪˈmɒs.ə.ti/

Animosity

animosidad; hostilidad
Meaning
strong hostility or dislike; active hatred or ill will
Example
There was clear animosity between the two rival teams.
Había una clara animosidad entre los dos equipos rivales.
C1 adjective /ˌæbəˈrɪdʒənəl/

aboriginal

aborigen
Meaning
Relating to the original inhabitants of a region.
Example
The museum has a large collection of aboriginal art.
El museo tiene una gran colección de arte aborigen.
C1 noun /əˈstuːt.nəs/

astuteness

astucia
Meaning
The ability to accurately assess situations or people and turn this to one's advantage.
Example
His astuteness helped in negotiations.
Su astucia ayudó en las negociaciones.
C1 adjective /ænˈtɪriər/

anterior

anterior
Meaning
Situated at or toward the front; coming before in position or time.
Example
The anterior part of the brain controls logical thinking.
La parte anterior del cerebro controla el pensamiento lógico.
C1 noun /əˌsæsɪˈneɪʃən/

assassination

asesinato
Meaning
The act of killing someone important, often for political or ideological reasons.
Example
The assassination of the president shocked the nation.
El asesinato del presidente conmocionó a la nación.
C1 verb /ˈæmbʊʃ/

ambush

emboscar
Meaning
To attack suddenly and unexpectedly from a hidden position.
Example
The soldiers planned to ambush the enemy at dawn.
Los soldados planearon emboscar al enemigo al amanecer.
C1 adjective /əˈsɛndənt/

ascendant

ascendente, dominante
Meaning
Rising in power or influence; dominant.
Example
She is an ascendant leader in the political party.
Ella es una líder ascendente en el partido político.
C1 noun, verb /əˈsɛnt/

assent

asentimiento
Meaning
To agree to something, especially after careful consideration; an expression of approval.
Example
She nodded her head in silent assent.
Ella asintió con la cabeza en silencio.
C1 noun /əˈtrɑːsəti/

atrocity

atrocidad
Meaning
an extremely cruel or violent act, often involving physical violence
Example
The world condemned the atrocity committed against civilians.
El mundo condenó la atrocidad cometida contra los civiles.
C1 verb ɔːɡˈmɛntɪŋ

augmenting

aumentar
Meaning
Increasing; making something greater in size, number, or degree
Example
Life expectancy is augmenting with advancements in healthcare.
La esperanza de vida está aumentando con los avances en la atención sanitaria.
C1 verb /ˈæɡənaɪz/

agonize

agonizar
Meaning
To suffer extreme physical or mental pain; to spend time worrying.
Example
She agonized for days over whether she had made the right decision.
Ella agonizó durante días sobre si había tomado la decisión correcta.
C1 noun /ˈænti ˈeəkræft ɡʌn/

Anti-aircraft-gun

cañón antiaéreo
Meaning
a weapon designed to attack aircraft from the ground
Example
The anti-aircraft gun was positioned to defend the military base.
El cañón antiaéreo estaba posicionado para defender la base militar.
C1 verb /ˈæmpjʊteɪt/

amputate

amputar
Meaning
to cut off a limb from the body by surgery
Example
The doctors had to amputate his leg after the accident.
Los médicos tuvieron que amputar su pierna después del accidente.
C1 noun /əˈliː.dʒəns/

allegiance

lealtad
Meaning
Loyalty or commitment of a subordinate to a superior or of an individual to a group or cause.
Example
Soldiers take an oath of allegiance to their country.
Los soldados hacen un juramento de lealtad a su país.
C1 adjective /əˈtjuːnd/

attuned

ajustado / sensible
Meaning
Being receptive or sensitive to something; well adjusted or in harmony.
Example
She is attuned to the needs of her students.
Ella está ajustada a las necesidades de sus estudiantes.
C1 adjective, noun /əbˈzɔːrbənt/

absorbent

absorbente
Meaning
able to soak up liquid, moisture, or energy easily; a material or substance that absorbs
Example
This towel is highly absorbent and dries quickly.
Esta toalla es muy absorbente y se seca rápido.
C1 noun /ˌæf.ɚˈmeɪ.ʃən/

affirmation

afirmación
Meaning
The action or process of affirming something or being affirmed; emotional support or encouragement.
Example
Daily affirmation of self-worth boosts confidence.
La afirmación diaria del autoestima aumenta la confianza.
C1 adjective /ˈeɪmləs/

Aimless

sin rumbo; sin objetivo
Meaning
without purpose or direction; lacking a goal
Example
He wandered around the city in an aimless manner.
Él caminaba por la ciudad de manera sin rumbo.
C1 noun /əˈtjuːn.mənt/

attunement

armonización
Meaning
Being in harmony or responsive to someone's emotional state.
Example
Attunement to emotions improves relationships.
La armonización con las emociones mejora las relaciones.
C1 verb /ɔːˈθɛntɪkeɪt/

authenticate

autenticar
Meaning
To prove or show that something is genuine or true.
Example
The bank uses advanced technology to authenticate online transactions.
El banco utiliza tecnología avanzada para autenticar las transacciones en línea.
C1 noun /əˈtoʊnmənt/

atonement

expiación
Meaning
the act of making amends for a wrong, sin, or injury
Example
The festival was celebrated as a day of atonement.
El festival fue celebrado como un día de expiación.
C1 adjective /ˌeɪpəˈlɪtɪkəl/

apolitical

apolítico
Meaning
not interested in or not connected with politics
Example
She prefers to stay apolitical and focus on her work.
Ella prefiere mantenerse apolítica y concentrarse en su trabajo.
C1 adverb /iːsˈθetɪkli/

aesthetically

estéticamente
Meaning
in a way that is concerned with beauty or visual appeal
Example
The building is aesthetically pleasing despite its simple design.
El edificio es estéticamente agradable a pesar de su diseño simple.
C1 verb /ˈæn.ə.teɪt/

annotate

añadir notas o comentarios
Meaning
to add notes or comments to a text, diagram, or document for explanation or clarification
Example
The teacher asked the students to annotate the poem with their interpretations.
El maestro pidió a los estudiantes que anotaran el poema con sus interpretaciones.
C1 noun /əˈsɛnʃən/

ascension

ascensión
Meaning
The act of rising or going up, often to an important position or a higher place.
Example
His rapid ascension in the company surprised everyone.
Su rápida ascensión en la empresa sorprendió a todos.
C1 noun /əˈsɛndənsi/

ascendancy

ascendencia, dominio
Meaning
A position of power, influence, or control over others.
Example
The company gained ascendancy in the market through innovation.
La empresa logró ascendencia en el mercado a través de la innovación.
C1 verb /əˈvɛndʒ/

avenge

vengar
Meaning
to inflict harm in return for an injury or wrong done to oneself or another
Example
He vowed to avenge his brother's death.
Él juró vengar la muerte de su hermano.
C1 adjective /əˈtrəʊ.ʃəs/

Atrocious

atroz; extremadamente malo o desagradable
Meaning
horrifyingly wicked; extremely bad or unpleasant
Example
The conditions in the prison were atrocious.
Las condiciones en la prisión eran atroces.
C1 noun ˌæf.ɔːr.ɪˈsteɪ.ʃən

afforestation

reforestación
Meaning
The action of planting trees on an area of land in order to form a forest.
Example
Afforestation helps restore biodiversity.
La reforestación ayuda a restaurar la biodiversidad.
C1 noun /əˈdʒɪl.ɪ.ti/

agility

agilidad
Meaning
Ability to work quickly and easily, both physically and mentally.
Example
Mental agility is essential for problem-solving.
La agilidad mental es esencial para resolver problemas.
C1 verb /əˈlɒt/

allot

felicidad
Meaning
to give or assign something, often a share or portion, to someone
Example
Each student was allotted ten minutes to present.
Ella no pudo ocultar su felicidad cuando recibió el premio.
C1 noun /ˈɑːrdər/

ardor

pasión, entusiasmo
Meaning
Great enthusiasm or passion.
Example
She spoke with ardor about her new project.
Ella habló con ardor sobre su nuevo proyecto.
C1 noun /əˈrɪs.tə.kræt/

Aristocrat

aristócrata; persona de nobleza
Meaning
a member of the aristocracy; a person of noble rank or birth
Example
The aristocrat lived in a magnificent castle.
El aristócrata vivía en un castillo magnífico.
C1 adjective /ɑːrˈkeɪn/

arcane

arcano
Meaning
understood by few; mysterious or secret
Example
The professor’s lecture was full of arcane details that only specialists could follow.
La conferencia del profesor estaba llena de detalles arcanos que solo los especialistas podían seguir.
C1 noun /ˈæntənɪm/

antonym

antónimo
Meaning
A word opposite in meaning to another.
Example
‘Hot’ is the antonym of ‘cold’.
‘Hot’ es el antónimo de ‘cold’.
C1 noun /ˈæmpɛər/

ampere

ámper
Meaning
A unit of electric current in the International System of Units (SI), symbolized as A.
Example
The current flowing through the wire is measured in amperes.
La corriente que fluye a través del cable se mide en amperios.
C1 adjective /ɑːrˈkeɪɪk/

archaic

arcaico
Meaning
very old or old-fashioned; belonging to an earlier time
Example
Some laws are considered archaic and no longer relevant.
Algunas leyes se consideran arcaicas y ya no son relevantes.
C1 noun ˈælərdʒən

allergen

sustancia que causa una reacción alérgica
Meaning
A substance that causes an allergic reaction.
Example
Pollen is a common allergen that affects many people.
El polen es un alérgeno común que afecta a muchas personas.
C1 verb /ænˈtæɡənaɪz/

antagonize

antagonizar
Meaning
to cause someone to become hostile or angry; to provoke opposition
Example
His rude remarks only served to antagonize his colleagues.
Sus comentarios groseros solo sirvieron para antagonizar a sus colegas.
C1 noun /ˈeɪ.nəs/

Anus

ano
Meaning
the opening at the end of the digestive tract through which waste leaves the body
Example
The doctor examined the patient's anus during the medical checkup.
El doctor examinó el ano del paciente durante el chequeo médico.
C1 noun /ˈæbdəmən/

abdomen

abdomen
Meaning
The part of the body below the chest and above the hips that contains the stomach and other organs.
Example
He complained of pain in his abdomen.
Él se quejó de dolor en su abdomen.
C1 adjective /əˈluːf/

aloof

distante
Meaning
Not friendly or forthcoming; cool and distant.
Example
He remained aloof during the entire discussion.
Él permaneció distante durante toda la discusión.
C1 adjective /ˈæmərəs/

amorous

amoroso
Meaning
Showing, feeling, or relating to romantic love or desire.
Example
He sent her an amorous letter filled with declarations of love.
Él le envió una carta amorosa llena de declaraciones de amor.
C1 adjective /ədˈmɪsəbl/

admissible

admisible
Meaning
acceptable or valid, especially as evidence in a court of law
Example
The judge ruled that the document was admissible as evidence.
El juez dictaminó que el documento era admisible como prueba.
C1 adverb /ɔːˈtɒnəməsli/

autonomously

de forma autónoma
Meaning
In an independent or self-governing manner.
Example
The robot can operate autonomously without human intervention.
El robot puede operar de forma autónoma sin intervención humana.
C1 noun ˈæk.si.əm

axiom

axioma
Meaning
A statement or principle that is considered true and does not require proof.
Example
Actions speak louder than words is a well-known axiom.
Las acciones hablan más fuerte que las palabras, es un axioma conocido.
C1 adjective /ˌæntiˈsleɪvəri/

antislavery

antiesclavismo
Meaning
Opposed to the practice or system of slavery.
Example
The antislavery movement gained momentum in the 19th century.
El movimiento antiesclavista cobró impulso en el siglo XIX.
C1 verb /əˈmæs/

amass

acumular
Meaning
to gather together or accumulate over a period of time
Example
He managed to amass a fortune through wise investments.
Logró acumular una fortuna a través de inversiones sabias.
C1 adjective /əˈpriː.ʃə.bəl/

Appreciable

apreciable; significativo; considerable en cantidad
Meaning
noticeable; significant; considerable in amount
Example
There was an appreciable improvement in his test scores.
Hubo una mejora apreciable en sus puntuaciones de prueba.
C1 noun əˈrɪd.ɪ.ti

aridity

aridez
Meaning
The state of being extremely dry, especially having insufficient rainfall to support vegetation.
Example
The aridity of the land is increasing due to climate change.
La aridez de la tierra está aumentando debido al cambio climático.
C1 adjective ɔːˈspɪʃ.əs

auspicious

auspicioso
Meaning
Favorable or bringing good luck and success
Example
The wedding was held on an auspicious day.
La boda se celebró en un día auspicioso.
C1 verb /əˈsɪm.ɪ.leɪt/

assimilate

asimilar completamente; absorber e integrar en el conocimiento o cultura
Meaning
To take in and understand fully; to absorb and integrate into one's knowledge or culture.
Example
Immigrants often struggle to assimilate into a new culture.
Los inmigrantes a menudo luchan por asimilarse en una nueva cultura.
C1 verb /əˈpɔːl/

appall

impactar
Meaning
To shock or horrify someone with something unpleasant or bad.
Example
The cruelty of the crime appalled the entire community.
La crueldad del crimen impactó a toda la comunidad.
C1 noun /ˌæbəˈrɪdʒəniːz/

aborigines

aborígenes
Meaning
The original inhabitants of a land, especially in Australia.
Example
The aborigines have preserved their traditions for thousands of years.
Los aborígenes han preservado sus tradiciones durante miles de años.
C1 noun /əˈbreɪʒən/

abrasion

raspadura o desgaste de la piel o superficie debido a la fricción
Meaning
a scrape or wearing away of the skin or surface due to friction
Example
He suffered a minor abrasion on his knee after falling.
Él sufrió una pequeña raspadura en su rodilla después de caerse.
C1 adjective /ˌæprɪˈhɛnsɪv/

apprehensive

ansioso
Meaning
feeling anxious or fearful that something bad will happen
Example
He was apprehensive about starting a new job in a foreign country.
Estaba ansioso por comenzar un nuevo trabajo en un país extranjero.
C1 noun /əˈnɒməli/

anomaly

anomalía
Meaning
something that deviates from the norm or expected result
Example
The sudden drop in temperature was considered an anomaly.
La caída repentina de la temperatura fue considerada una anomalía.
C1 noun /əˈfɪn.ɪ.ti/

affinity

afinidad
Meaning
A natural liking for or attraction to a person, thing, idea, etc.
Example
She has an affinity for classical music.
Ella tiene una afinidad por la música clásica.
C1 verb /əˈtɛst/

attest

atestiguar
Meaning
To provide or serve as clear evidence of; to confirm or certify the truth of something.
Example
The witness attested to the accuracy of the report.
El testigo atestiguó la exactitud del informe.
C1 verb /əˈskraɪb/

ascribe

atribuir, asignar
Meaning
To attribute something to a cause, source, or person.
Example
Many scholars ascribe the poem to an unknown author.
Muchos eruditos atribuyen el poema a un autor desconocido.
C1 noun /ˈæpərtʃər/

aperture

abertura / agujero
Meaning
an opening, hole, or gap, especially one that lets in light
Example
Light entered through the small aperture in the wall.
La luz entró a través de la pequeña abertura en la pared.
C1 noun /ɔːˈtɒkrəsi/

autocracy

autocracia
Meaning
A system of government in which one person has absolute power.
Example
The country suffered under decades of autocracy.
El país sufrió durante décadas bajo una autocracia.
C1 noun /æbˈdʌk.ʃən/

abduction

secuestro
Meaning
the act of taking someone away illegally by force; kidnapping
Example
The police are investigating the abduction of the child.
La policía está investigando el secuestro del niño.
C1 noun /ədˈmɪtəns/

admittance

admisión
Meaning
the process or fact of entering or being allowed to enter a place
Example
No admittance without a valid ticket.
No hay admisión sin un boleto válido.
C1 noun /ˌæfəˈdeɪvɪt/

affidavit

declaración jurada
Meaning
a written statement confirmed by oath or affirmation, used as evidence in court
Example
The witness submitted an affidavit to the court.
El testigo presentó un affidavit ante el tribunal.
C1 noun/verb /ˈætrəfi/

atrophy

atrofia
Meaning
a decrease in size or wasting away of a body part, tissue, or ability due to lack of use
Example
Without regular exercise, muscles may atrophy over time.
Sin ejercicio regular, los músculos pueden atrofiarse con el tiempo.
C1 noun /ɑːˌtɪkjʊˈleɪʃən/

articulation

expresión
Meaning
The action of putting into words an idea or feeling of a specified type.
Example
His articulation during the debate impressed everyone.
Su articulación durante el debate impresionó a todos.
C1 adverb /əˈraɪ/

awry

equivocado
Meaning
away from the expected or proper direction; wrong or amiss
Example
The plan went awry when the weather suddenly changed.
El plan salió mal cuando el clima cambió repentinamente.
C1 noun /ˌɑːrbɪˈtreɪʃən/

arbitration

arbitraje
Meaning
the process of resolving a dispute through an impartial third party whose decision is binding; formal judgment outside a court
Example
The contract requires arbitration to settle any disputes.
El contrato exige arbitraje para resolver cualquier disputa.
C1 verb /əˈseɪl/

assail

atacar
Meaning
to attack violently, either physically or with words
Example
The politician was assailed with difficult questions.
El político fue asaltado con preguntas difíciles.