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C1 verb /siːð/

seethe

hirviendo de rabia
Meaning
To be filled with intense but unexpressed anger or agitation.
Example
She was seething with anger after the unfair decision.
Ella estaba hirviendo de rabia después de la decisión injusta.
C1 verb /brɔɪl/

broil

asar a la parrilla
Meaning
To cook food by direct heat, usually under a grill or over a fire.
Example
She broiled the chicken until it was golden brown.
Ella asó el pollo hasta que estuvo dorado.
C1 noun /ɪnˈdʌstriəsnəs/

industriousness

diligencia
Meaning
The quality of being hardworking and diligent.
Example
His industriousness earned him a promotion at work.
Su diligencia le valió una promoción en el trabajo.
C1 noun /ˈhæm.lət/

Hamlet

pequeña aldea
Meaning
a small rural settlement, smaller than a village; a small community
Example
The tiny hamlet nestled in the valley had only a dozen houses and one small church.
La pequeña aldea enclavada en el valle tenía solo una docena de casas y una pequeña iglesia.
C1 verb /dʒæb/

jab

dar un golpe
Meaning
To poke or thrust quickly, often with a finger or something pointed.
Example
He jabbed his finger at the map to show the location.
Él dio un golpe con el dedo en el mapa para mostrar la ubicación.
C1 verb /ɪˈlæps/

elapse

transcurrir
Meaning
to pass or go by, usually referring to time
Example
Several hours elapsed before he finally returned home.
Pasaron varias horas antes de que él finalmente regresara a casa.
C1 verb /səˈlɪsɪt/

solicit

solicitar
Meaning
to ask for or try to obtain something from someone
Example
The charity is soliciting donations for flood victims.
La caridad está solicitando donaciones para las víctimas de las inundaciones.
C1 noun /ˈspɛkjʊˌleɪtər/

speculator

especulador
Meaning
A person who forms theories without evidence, or invests in assets hoping for profit.
Example
The real estate speculator bought land hoping its value would rise.
El especulador de bienes raíces compró tierras con la esperanza de que su valor aumentaría.
C1 noun /deɪˈtɑːnt/

detente

distensión
Meaning
the easing of hostility or strained relations, especially between countries
Example
The two nations worked toward detente after decades of conflict.
Las dos naciones trabajaron hacia la distensión después de décadas de conflicto.
C1 adjective /vɪˈveɪʃəs/

vivacious

vivaz
Meaning
Attractively lively and animated.
Example
She was admired for her vivacious personality.
Ella fue admirada por su personalidad vivaz.
C1 noun /ˈlɛktən/

lectern

atril
Meaning
A tall stand with a sloping top used to support a book, notes, or script during a speech or lecture.
Example
The professor placed her notes on the lectern before starting her lecture.
La profesora colocó sus notas en el atril antes de comenzar su conferencia.
C1 adjective /ˈwaɪ.li/

Wily

astuto; astuto; engañoso
Meaning
clever; cunning; sly
Example
The wily fox escaped from the trap using his cunning intelligence.
El zorro astuto escapó de la trampa utilizando su inteligencia astuta.
C1 noun /ˈwʊd.ən ˈsæn.dəl/

Wooden sandal

sandalia de madera
Meaning
a type of footwear made of wood, typically worn as traditional shoes
Example
She wore wooden sandals to the traditional ceremony.
Ella llevaba sandalias de madera en la ceremonia tradicional.
C1 noun ˌes.kəˈleɪ.ʃən

escalation

aumento rápido; un alza.
Meaning
A rapid increase; a rise.
Example
The escalation of production costs impacts profitability.
La escalada de los costos de producción impacta la rentabilidad.
C1 noun /ˌprəʊ.baɪˈɒt.ɪks/

probiotics

probióticos
Meaning
Live microorganisms that, when administered in adequate amounts, confer health benefits to the host, especially for digestive health.
Example
Probiotics improve digestion and enhance gut health.
Los probióticos mejoran la digestión y promueven la salud intestinal.
C1 noun /dɪˈrɪʒən/

derision

desdén
Meaning
Contemptuous ridicule or mockery.
Example
His ideas were greeted with derision by the audience.
Sus ideas fueron recibidas con desdén por la audiencia.
C1 verb /ɪnˈɡreɪv/

engrave

grabar
Meaning
to cut or carve a design, letter, or pattern into a hard surface
Example
The craftsman engraved her name on the silver ring.
El artesano grabó su nombre en el anillo de plata.
C1 noun /ˌɛlɪˈveɪʃən/

elevation

elevación
Meaning
The act of raising something to a higher position or level.
Example
The hikers reached a high elevation after hours of climbing.
Los excursionistas llegaron a una alta elevación después de horas de escalada.
C1 adjective /ˌɛvərˈlæstɪŋ/

everlasting

eterno
Meaning
Lasting forever or for an indefinitely long time.
Example
The poet wrote about his everlasting love for nature.
El poeta escribió sobre su amor eterno por la naturaleza.
C1 verb /ɪnˈfleɪm/

inflame

inflamar
Meaning
to arouse strong feelings or provoke anger; to cause inflammation in the body
Example
The politician's remarks served to inflame public opinion.
Las declaraciones del político sirvieron para inflamar la opinión pública.
C1 noun /ˈskæf.əld/

Scaffold

andamio
Meaning
a temporary structure used by workers to stand on when building or repairing something high; a platform for execution
Example
The workers erected a scaffold to paint the building's exterior.
Los trabajadores erigieron un andamio para pintar el exterior del edificio.
C1 noun /ˌsɛrənˈdɪpɪti/

serendipity

serendipia
Meaning
The occurrence of events by chance in a happy or beneficial way.
Example
Finding that old photo album was pure serendipity.
Encontrar ese viejo álbum de fotos fue pura serendipia.
C1 noun /ˈstɛə.rɪ.əʊˌtaɪ.pɪŋ/

stereotyping

estereotipar
Meaning
A widely held but fixed and oversimplified image or idea of a particular type of person or thing.
Example
Stereotyping people based on their race is harmful.
Estereotipar a las personas según su raza es perjudicial.
C1 adjective /ˈskræpi/

scrappy

peleador / desordenado
Meaning
Determined and willing to fight or argue; also messy or disorganized.
Example
Despite being small, he was a scrappy fighter.
A pesar de ser pequeño, era un peleador audaz.
C1 noun /əˈduː/

ado

alboroto / actividad innecesaria
Meaning
a fuss or unnecessary activity; trouble or difficulty
Example
Without further ado, let’s begin the ceremony.
Sin más alboroto, empecemos la ceremonia.
C1 adverb /əˈkjuːtli/

acutely

agudamente
Meaning
in a sharp, intense, or severe way; with keen awareness
Example
She was acutely aware of the risks involved.
Ella era agudamente consciente de los riesgos involucrados.
C1 verb /dɪˈspɜːrs/

disperse

dispersar
Meaning
To scatter or spread widely in different directions.
Example
The police used tear gas to disperse the crowd.
La policía usó gas lacrimógeno para dispersar a la multitud.
C1 noun /ˈnɪkəl/

nickel

níquel
Meaning
a small coin, typically worth five cents in the United States
Example
He found a nickel on the ground.
Él encontró un níquel en el suelo.
C1 noun /ˈnɒs.trɪl/

Nostril

fosa nasal
Meaning
either of the two openings in the nose through which air passes
Example
The doctor checked each nostril for any blockage.
El doctor revisó cada fosa nasal en busca de cualquier obstrucción.
C1 noun səˌfɪs.tɪˈkeɪ.ʃən

sophistication

nivel alto de complejidad o refinamiento
Meaning
High level of complexity or refinement.
Example
The sophistication of modern AI technology is remarkable.
La sofisticación de la tecnología moderna de IA es notable.
C1 adjective /trænsˈfɜːrəbəl/

Transferable

transferible
Meaning
able to be moved from one place to another; able to be given to someone else
Example
The skills you learn here are transferable to other jobs.
Las habilidades que aprendas aquí son transferibles a otros trabajos.
C1 adjective ˈsɒvrɪn

sovereign

soberano, supremo
Meaning
Possessing supreme or ultimate power; independent.
Example
The sovereign government has control over its currency.
El gobierno soberano tiene control sobre su moneda.
C1 verb /deɪz/

daze

aturdir
Meaning
to stun or confuse someone temporarily with a shock or surprise
Example
The bright lights dazed the runners as they entered the stadium.
Las luces brillantes aturdirán a los corredores cuando entren en el estadio.
C1 noun /ˈmælɪs/

Malice

maldad; rencor; animosidad;
Meaning
The intention or desire to do evil; ill will
Example
There was no malice in his criticism, just honest feedback.
No había malicia en su crítica, solo retroalimentación honesta.
C1 verb /ˈfɔːrtɪˌfaɪ/

fortify

fortificar
Meaning
To strengthen a place, person, or thing physically or mentally.
Example
They fortified the city walls to protect against invasion.
Fortificaron las murallas de la ciudad para protegerse contra la invasión.
C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

incubadora
Meaning
a device or environment that provides suitable conditions for eggs, cells, or infants to develop
Example
The premature baby was placed in an incubator for care.
El bebé prematuro fue colocado en una incubadora para su cuidado.
C1 noun, verb /ˈfɛrɪt/

ferret

hurón, buscar persistentemente o descubrir algo
Meaning
a small domesticated animal used for hunting; to search or uncover something persistently
Example
He ferreted out the hidden documents.
Él sacó los documentos ocultos.
C1 verb, adjective, noun /spruːs/

spruce

arreglar / un tipo de árbol
Meaning
to make neat or tidy in appearance; also refers to an evergreen tree
Example
He spruced up his room before the guests arrived.
Él arregló su habitación antes de que llegaran los invitados.
C1 adjective /əbˈsɛsɪv/

obsessive

obsesivo
Meaning
Relating to or characterized by an obsession; thinking about something too much.
Example
He has an obsessive interest in cleanliness.
Él tiene un interés obsesivo en la limpieza.
C1 noun /ˈleɪ.tən.si/

latency

latencia
Meaning
The delay in processing signals or data.
Example
High latency in online gaming can cause lagging issues.
La alta latencia en los juegos en línea puede causar problemas de retraso.
C1 noun /blæk sɔːlt/

Black Salt

sal negra
Meaning
a type of rock salt with a distinctive sulfuric flavor, commonly used in Indian cuisine
Example
Add a pinch of black salt to enhance the flavor of the fruit salad.
Agregue una pizca de sal negra para mejorar el sabor de la ensalada de frutas.
C1 noun /ˌnjʊə.roʊ.plæˈstɪs.ɪ.ti/

neuroplasticity

neuroplasticidad
Meaning
The brain's ability to reorganize itself by forming new neural connections throughout life.
Example
Neuroplasticity allows the brain to rewire itself after an injury.
La neuroplasticidad permite que el cerebro se recablee después de una lesión.
C1 noun /ˌsɪmbɪˈəʊsɪs/

symbiosis

relación simbiótica
Meaning
A mutually beneficial relationship between different people or groups.
Example
The symbiosis between the two companies led to mutual growth.
La simbiosis entre las dos empresas llevó a un crecimiento mutuo.
C1 adjective /ˌhoʊlˈhɑːrtɪd/

wholehearted

de todo corazón
Meaning
showing complete sincerity and commitment; fully enthusiastic
Example
She gave her wholehearted support to the project.
Ella dio su apoyo de todo corazón al proyecto.
C1 adjective /ˈhɑːrtˌrɛndɪŋ/

heartrending

desgarrador
Meaning
Causing great sadness or distress; very moving emotionally.
Example
The documentary showed heartrending scenes of war victims.
El documental mostró escenas desgarradoras de las víctimas de la guerra.
C1 noun/verb /tæk/

tack

tachuela / táctica
Meaning
a small sharp nail; or to change direction in sailing or approach something differently
Example
She used a tack to pin the paper on the wall.
Ella usó un tachuela para fijar el papel en la pared.
C1 verb /dəˈmɛstɪkeɪt/

domesticate

domesticar
Meaning
to tame an animal for use by humans; to adapt something for domestic use
Example
Humans domesticated dogs thousands of years ago.
Los humanos domesticaron perros hace miles de años.
C1 noun /ˈpoʊʃən/

potion

poción
Meaning
a liquid with healing, magical, or poisonous properties
Example
The witch gave the hero a healing potion.
La bruja le dio al héroe una poción curativa.
C1 noun /ˈpɔːpər/

pauper

mendigo
Meaning
A very poor person.
Example
The pauper begged for food on the street corner.
El mendigo pidió comida en la esquina de la calle.
C1 noun /bəˈrɒmɪtər/

barometer

barómetro de presión atmosférica
Meaning
an instrument that measures atmospheric pressure
Example
The barometer indicated a storm was approaching.
El barómetro indicó que se acercaba una tormenta.
C1 adjective /dɪˈfʌŋkt/

defunct

fuera de servicio, desaparecido
Meaning
No longer existing, operating, or functioning.
Example
The company became defunct after the financial crisis.
La empresa se volvió defunta después de la crisis financiera.
C1 noun /ˈpærɪti/

parity

paridad
Meaning
the state or condition of being equal, especially in status or pay
Example
The campaign aims to achieve pay parity between men and women.
La campaña tiene como objetivo lograr la paridad salarial entre hombres y mujeres.
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 noun /ˈvɪstə/

vista

vista
Meaning
A pleasing view, especially one seen through a long, narrow opening.
Example
From the mountain top, we admired the breathtaking vista of the valley below.
Desde la cima de la montaña, admiramos la vista impresionante del valle abajo.
C1 adjective /nɪˈɡlɛktfʊl/

neglectful

desatento
Meaning
Failing to give proper care or attention.
Example
The neglectful parent left the child alone for hours.
El padre desatento dejó al niño solo durante horas.
C1 noun ˈfɔː.saɪt

foresight

previsión
Meaning
The ability to predict or the action of predicting what will happen or be needed in the future.
Example
His foresight helped the company avoid financial losses.
Su previsión ayudó a la empresa a evitar pérdidas financieras.
C1 noun /ˈtriːtɪs/

treatise

tratado
Meaning
a formal and systematic written work dealing with a subject in detail
Example
He wrote a treatise on modern economic theory.
Escribió un tratado sobre la teoría económica moderna.
C1 verb /loʊð/

loathe

detestar
Meaning
to feel intense dislike or disgust for
Example
He absolutely loathes being late to meetings.
Él odia llegar tarde a las reuniones.
C1 noun /ˈprɛsɪdəns/ or /prɪˈsiːdəns/

precedence

precedencia
Meaning
the condition of being considered more important than someone or something else; priority
Example
Safety takes precedence over speed in this factory.
En esta fábrica, la seguridad tiene prioridad sobre la velocidad.
C1 noun /ˈhɔːl.mɑːrk/

hallmark

marca distintiva
Meaning
a typical characteristic or feature of someone or something
Example
Honesty is the hallmark of a good leader.
La honestidad es la marca distintiva de un buen líder.
C1 noun /kəmˈpʌl.ʃən/

Compulsion

compulsión; coacción;
Meaning
the action or state of forcing or being forced to do something; an irresistible urge to behave in a certain way
Example
He felt a strong compulsion to check his phone every few minutes.
Sintió una fuerte compulsión de revisar su teléfono cada pocos minutos.
C1 noun /səˈlaɪ.və/

Saliva

saliva
Meaning
the watery liquid secreted into the mouth by glands
Example
The dentist asked her to rinse the saliva from her mouth.
El dentista le pidió que enjuagara la saliva de su boca.
C1 noun /ˈspɪnstər/

spinster

soltera
Meaning
An unmarried woman, often one who is older and considered unlikely to marry
Example
The novel featured a kind-hearted spinster who cared for the village children.
La novela presentó a una soltera de buen corazón que cuidaba a los niños del pueblo.
C1 noun kəˈlɛktɪvɪzəm

collectivism

colectivismo
Meaning
The practice or principle of giving a group priority over each individual in it.
Example
Collectivism emphasizes the importance of group over individual interests.
El colectivismo enfatiza la importancia del grupo sobre los intereses individuales.
C1 noun ˈhʌz.bən.dri

husbandry

agricultura y ganadería
Meaning
The care, cultivation, and breeding of crops and animals; farming and agriculture.
Example
Proper husbandry techniques improve livestock health.
Las técnicas adecuadas de ganadería mejoran la salud del ganado.
C1 noun /wæɡ/

Wag

persona bromista; alguien que disfruta hacer chistes
Meaning
a humorous or playful person; someone who enjoys joking around
Example
The class wag always made everyone laugh with his clever jokes.
El bromista de la clase siempre hacía reír a todos con sus bromas ingeniosas.
C1 noun /ˈpæs.ɪ.fɪst/

pacifist

pacifista
Meaning
a person who believes in peace and opposes war or violence
Example
She is a committed pacifist who campaigns against armed conflict.
Ella es una pacifista comprometida que hace campaña contra los conflictos armados.
C1 adjective /ˈspɑːrtn/

spartan

espartano
Meaning
showing simplicity and lack of luxury; austere
Example
He lived in a spartan room with just a bed and a chair.
Vivió en una habitación espartana con solo una cama y una silla.
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.
C1 noun /ˈkɒz.moʊs/

Cosmos

flor cosmos
Meaning
a colorful annual flower with daisy-like blooms and feathery foliage
Example
The cosmos flowers swayed gently in the summer breeze across the meadow.
Las flores de cosmos se movían suavemente en la brisa de verano a través del prado.
C1 adjective /ˈdɔːr.mənt/

Dormant

inactivo; durmiendo; temporalmente suspendido; no actualmente activo
Meaning
inactive; sleeping; temporarily suspended; not currently active
Example
The volcano has been dormant for over a century.
El volcán ha estado inactivo por más de un siglo.
C1 verb /dʒəʊlt/

jolt

sacudida
Meaning
to push or shake someone or something abruptly and roughly
Example
The sudden stop jolted all the passengers forward.
La parada repentina empujó a todos los pasajeros hacia adelante.
C1 noun /twɪt/

Twit

tonto; burlarse
Meaning
a silly or foolish person; to tease or make fun of someone
Example
Don't be such a twit and listen carefully.
No seas tan tonto y escucha cuidadosamente.
C1 noun /ˈæmplɪtjuːd/

amplitude

amplitud
Meaning
the maximum extent of a vibration or oscillation, or the size of something
Example
The amplitude of the earthquake was measured on the Richter scale.
La amplitud del terremoto fue medida en la escala de Richter.
C1 adjective kəʊˈhiː.sɪv

cohesive

cohesivo
Meaning
Characterized by or causing cohesion; forming a united whole.
Example
The team displayed a cohesive strategy.
El equipo mostró una estrategia cohesionada.
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.
C1 noun/adjective /ˈbaɪ.ɡɒn/

bygone

pasado
Meaning
Something belonging to an earlier time; past and no longer existing.
Example
He often talks about the traditions of bygone days.
Él a menudo habla sobre las tradiciones de los días pasados.
C1 noun dɪˈsʌɪsɪvnɪs

decisiveness

capacidad de tomar decisiones
Meaning
The ability to make decisions quickly and effectively.
Example
His decisiveness during the crisis saved the company.
Su capacidad de tomar decisiones durante la crisis salvó a la empresa.
C1 adjective /ɪˈleɪtɪd/

elated

extremadamente feliz
Meaning
Extremely happy and excited.
Example
She was elated when she heard the good news.
Estaba extremadamente feliz cuando escuchó las buenas noticias.
C1 adjective /ˌret.rəˈspek.tɪv/

Retrospective

retrospectivo
Meaning
looking back on or dealing with past events or situations
Example
The museum held a retrospective exhibition of the artist's work.
El museo organizó una exposición retrospectiva de la obra del artista.
C1 verb /ˈnɔːrməlaɪz/

normalize

normalizar
Meaning
to bring something back to a normal or standard condition; to make something conform to a standard
Example
The government took steps to normalize relations with neighboring countries.
El gobierno tomó medidas para normalizar las relaciones con países vecinos.
C1 adjective /ˈkɔːrəl/

choral

relacionado con el coro
Meaning
Relating to, written for, or performed by a choir or chorus.
Example
The church hosted a choral performance on Sunday.
La iglesia organizó una actuación coral el domingo.
C1 noun /pʌnˈdʒɑː.bi/

Punjabi

punyabi
Meaning
a traditional long shirt worn in South Asia, typically loose-fitting
Example
He wore a white punjabi for the festival celebration.
Él usó un punyabi blanco para la celebración del festival.
C1 adjective /ˈdjuːbiəs/

dubious

dudoso
Meaning
Hesitating or doubting; not to be relied upon.
Example
She gave him a dubious look after hearing his excuse.
Ella le dio una mirada dudosa después de escuchar su excusa.
C1 noun /ˈspiːʃiː/

specie

moneda
Meaning
money in the form of coins rather than notes or credit
Example
The transaction was made in specie.
La transacción se hizo en monedas.
C1 adjective /ˈrɛtroʊˌɡreɪd/

retrograde

retrógrado
Meaning
moving backward or returning to a worse condition
Example
The policy was seen as a retrograde step for human rights.
Se consideró que la política era un paso retrógrado para los derechos humanos.
C1 noun /ˈkævərn/

cavern

caverna
Meaning
a large cave or chamber in a cave
Example
The explorers entered a dark cavern beneath the mountain.
Los exploradores entraron en una caverna oscura debajo de la montaña.
C1 adjective /ˈstrɪndʒənt/

stringent

estricto
Meaning
strict, precise, and exacting
Example
The government imposed stringent measures during the crisis.
El gobierno impuso medidas estrictas durante la crisis.
C1 noun /ˈfɪʃ.ər/

fissure

fisura
Meaning
a long, narrow opening or crack in a surface or object
Example
The earthquake caused a deep fissure in the road.
El terremoto causó una fisura profunda en la carretera.
C1 adjective /ˌkætəˈklɪzmɪk/

cataclysmic

catastrófico
Meaning
Relating to or denoting a violent natural event or upheaval.
Example
The war had cataclysmic effects on the nation's economy.
La guerra tuvo efectos catastróficos en la economía del país.
C1 verb /ˈskʌr.i/

scurry

correr rápidamente
Meaning
To move quickly with short, hurried steps.
Example
The mice scurried across the kitchen floor when the lights turned on.
Los ratones corrieron rápidamente por el suelo de la cocina cuando las luces se encendieron.
C1 adjective /trænˈsen.dənt/

transcendent

más allá de la experiencia humana normal o meramente física
Meaning
Beyond or above the range of normal or merely physical human experience.
Example
His art has a transcendent quality.
Su arte tiene una calidad trascendental.
C1 adjective /kəmˈpleɪsənt/

complacent

complaciente
Meaning
showing self-satisfaction and a lack of concern about potential dangers or problems
Example
The team grew complacent after a few victories and stopped practicing hard.
El equipo se volvió complaciente después de unas victorias y dejó de practicar duro.
C1 noun /ɪnˈsaɪtmənt/

incitement

incitación
Meaning
the action of provoking unlawful or violent behavior
Example
He was arrested for incitement to riot.
Fue arrestado por incitación a la violencia.
C1 noun ɪˌməʊ.ʃəˈnæl.ɪ.ti

emotionality

emocionalidad
Meaning
The quality of being driven by emotions rather than reason; emotional responsiveness.
Example
His emotionality often influenced his decisions.
Su emocionalidad a menudo influía en sus decisiones.
C1 verb /ˈluːbrɪkeɪt/

lubricate

lubricar
Meaning
to apply oil or grease to reduce friction between surfaces
Example
The mechanic lubricated the car engine parts.
El mecánico lubricó las piezas del motor del coche.
C1 adjective /ˈliː.θəl/

Lethal

letal; mortal;
Meaning
deadly; fatal; capable of causing death
Example
The snake's venom is lethal to humans if not treated immediately.
El veneno de la serpiente es letal para los humanos si no se trata inmediatamente.
C1 noun /lɪˈkjʊər/

liqueur

licor dulce
Meaning
A strong, sweet alcoholic drink flavored with fruits, herbs, or spices.
Example
She served a small glass of cherry liqueur after dinner.
Ella sirvió un pequeño vaso de licor de cereza después de la cena.
C1 noun /hɒˈstɪləti/

hostility

hostilidad
Meaning
hostile behavior; unfriendliness or opposition
Example
The negotiations ended in an atmosphere of hostility.
Las negociaciones terminaron en un ambiente de hostilidad.
C1 adjective /ˌruː.dɪˈmen.tər.i/

Rudimentary

básico; elemental; subdesarrollado; en la etapa más temprana del desarrollo
Meaning
basic; elementary; undeveloped; in the earliest stage of development
Example
She has only rudimentary knowledge of French.
Ella solo tiene conocimiento rudimentario del francés.
C1 verb /ˈstɪntɪŋ/

stinting

dar con tacañería
Meaning
to supply sparingly or with restrictions
Example
He never stinting his efforts to help the poor.
Él nunca escatima esfuerzos para ayudar a los pobres.
C1 noun /kənˈdəʊləns/

condolence

pésame
Meaning
An expression of sympathy, especially on the occasion of death.
Example
She offered her sincere condolence to the grieving family.
Ella ofreció su más sentido pésame a la familia afligida.
C1 noun /ˈʌndərˌɡɑːrmənt/

undergarment

ropa interior
Meaning
a piece of clothing worn under outer clothes, usually next to the skin
Example
He bought new undergarments for the wedding.
Compró ropa interior nueva para la boda.
C1 noun /ɪkˈstrækʃən/

extraction

extracción
Meaning
the act of removing something, especially by pulling it out
Example
The extraction of oil from the ground requires special equipment.
La extracción de petróleo del suelo requiere equipos especiales.
C1 adjective ˌbjʊə.rəˈkræt.ɪk

bureaucratic

burocrático
Meaning
Involving or characterized by complex rules and procedures that can delay the achievement of goals.
Example
Bureaucratic red tape often delays project approvals.
La burocracia a menudo retrasa la aprobación de proyectos.
C1 noun ˌmɒdɪfɪˈkeɪʃn

modification

modificación
Meaning
The action of making changes to something.
Example
The plan required modification.
El plan requirió modificación.
C1 verb ˈflʌk.tʃu.eɪt

fluctuate

fluctuar
Meaning
To regularly increase or decrease.
Example
Stock prices fluctuate due to market conditions.
Los precios de las acciones fluctúan debido a las condiciones del mercado.
C1 adjective /ˌiːɡəˈtɪstɪkəl/

egotistical

ególatra
Meaning
Excessively self-absorbed or conceited.
Example
Her egotistical behavior made it difficult for her to maintain friendships.
Su comportamiento ególatra hizo difícil que mantuviera amistades.
C1 adjective /ˈfruːt.ləs/

Fruitless

infructuoso; inútil; fútil;
Meaning
unsuccessful; futile; pointless;
Example
After hours of searching, their efforts proved fruitless.
Después de horas de búsqueda, sus esfuerzos resultaron infructuosos.
C1 adjective /ˈaʊt.kɑːst/

Outcast

rechazado
Meaning
rejected by society; excluded person
Example
He felt like an outcast in his new school.
Él se sintió como un rechazado en su nueva escuela.
C1 noun ˈprəʊses stəˈbɪlɪti

process stability

estabilidad del proceso
Meaning
The consistency and steadiness of biological or functional processes
Example
Cold air ensures process stability in plants.
El aire frío asegura la estabilidad del proceso en las plantas.
C1 noun /ˌɪnfɪˈdɛləti/

infidelity

infidelidad
Meaning
the act of being unfaithful to a spouse or partner
Example
Their marriage ended due to his infidelity.
Su matrimonio terminó debido a su infidelidad.
C1 noun /ʌpˈhiːvəl/

upheaval

upheaval
Meaning
a violent or sudden change or disruption to something
Example
The company faced a major upheaval after the sudden resignation of its CEO.
La empresa enfrentó un gran desorden tras la repentina renuncia de su CEO.
C1 verb /drɛntʃ/

drench

empapar
Meaning
to make someone or something completely wet
Example
The sudden rain drenched the players on the field.
La lluvia repentina empapó a los jugadores en el campo.
C1 noun /ˌsæbəˈtɜːr/

saboteur

saboteador
Meaning
A person who engages in sabotage.
Example
The saboteur was arrested before he could plant the bomb.
El saboteador fue arrestado antes de poder plantar la bomba.
C1 noun /kənˈtɛnʃən/

contention

contienda, desacuerdo
Meaning
heated disagreement or argument; a point asserted in debate
Example
The main contention between the two parties was over tax reform.
La principal contienda entre las dos partes fue sobre la reforma fiscal.
C1 noun /ˈɜːrθənˌwɛr/

earthenware

cerámica
Meaning
pottery made of clay and hardened by heat
Example
The shop displayed beautiful earthenware pots and bowls.
La tienda exhibió hermosas ollas y tazones de cerámica.
C1 noun /ˈrəʊ.bɒt əˈsɪs.tɪd prəˈsiː.dʒərz/

robot-assisted procedures

procedimientos asistidos por robot
Meaning
Medical operations performed with the help of robotic systems to enhance precision and control.
Example
Robot-assisted procedures reduce human error.
Los procedimientos asistidos por robot reducen el error humano.
C1 verb /ɪnˈtaɪs/

entice

atraer
Meaning
to attract or tempt someone by offering something appealing
Example
The advertisement was designed to entice customers into the store.
El anuncio fue diseñado para atraer a los clientes a la tienda.
C1 verb /piːk/

pique

despertar
Meaning
to stimulate interest or curiosity; to arouse resentment or anger
Example
Her remarks piqued his curiosity about the secret project.
Sus comentarios despertaron su curiosidad sobre el proyecto secreto.
C1 noun /ˈdʒɛntri/

gentry

gente noble
Meaning
People of good social position, usually of high birth or wealthy landowners
Example
The gentry of the town gathered for the annual ball.
La gente noble de la ciudad se reunió para el baile anual.