cohorts
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C1 noun /ˈkoʊhɔːrts/

cohorts

cohortes
Meaning
Groups of people who share a common feature or experience.
Example
Researchers compared the health outcomes of different cohorts.
Los investigadores compararon los resultados de salud de diferentes cohortes.
C1 noun /ˌmɔːrəˈtɔːriəm/

moratorium

moratoria
Meaning
A temporary suspension or delay of an activity, law, or obligation.
Example
The government announced a moratorium on new mining licenses.
El gobierno anunció una moratoria sobre las nuevas licencias de minería.
C1 adjective /ɪnˈflæməbəl/

Inflammable

inflamable; combustible
Meaning
easily set on fire; flammable; combustible
Example
The inflammable material caught fire quickly.
El material inflamable se prendió rápidamente.
C1 adjective /ˌɛnɪɡˈmætɪk/

enigmatic

enigmático
Meaning
mysterious and difficult to interpret or understand
Example
He gave me an enigmatic smile.
Él me dio una sonrisa enigmática.
C1 verb /præns/

prance

caminar con arrogancia
Meaning
To move with high, springy steps, often to show off or attract attention.
Example
The horse pranced around the field gracefully.
El caballo caminaba orgulloso alrededor del campo.
C1 adjective /ˈkrɪm.zən/

Crimson

rojo intenso
Meaning
a deep purplish-red color
Example
The crimson sunset painted the sky with beautiful shades.
La puesta de sol roja intensa pintó el cielo con hermosos tonos.
C1 adjective /ʌnˈsteɪtɪd/

unstated

no expresado
Meaning
not expressed directly in words; implied or left unsaid
Example
The contract included several unstated expectations.
El contrato incluía varias expectativas no expresadas.
C1 adjective /ˌrɛprɪzɛnˈteɪʃənl̩/

representational

representacional
Meaning
Relating to or depicting something in a realistic or symbolic way.
Example
The artist preferred a representational style of painting.
El artista prefería un estilo representacional de pintura.
C1 noun /ˈtrɪnɪti/

trinity

trinidad
Meaning
a group of three closely related things; in Christianity, the Father, the Son, and the Holy Spirit
Example
The museum’s exhibit focused on a trinity of themes: memory, identity, and power.
La exposición del museo se centró en una trinidad de temas: memoria, identidad y poder.
C1 noun/verb /ˈbɔɪ/ or /ˈbuːi/

buoy

boya, mantener a flote
Meaning
A floating marker on water; to keep something afloat or encourage someone.
Example
The news buoyed their spirits after the loss.
La noticia elevó su espíritu después de la pérdida.
C1 noun ˌmɒdɪfɪˈkeɪʃn

modification

modificación
Meaning
The action of making changes to something.
Example
The plan required modification.
El plan requirió modificación.
C1 adjective /ˌboʊnəˈfaɪdi/

Bonafide

genuino; auténtico; legítimo
Meaning
genuine; authentic; legitimate
Example
She is a bonafide expert in her field.
Ella es una experta genuina en su campo.
C1 noun /ˈtrɪp.lət/

triplet

trillizo
Meaning
One of three children or animals born at the same time to the same mother.
Example
The family was surprised to have triplets instead of twins.
La familia se sorprendió al tener trillizos en lugar de gemelos.
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 ˌdet.rɪˈmen.təl

detrimental

detrimental
Meaning
Tending to cause harm; damaging or harmful.
Example
Pollution has detrimental effects on fertility.
La contaminación tiene efectos perjudiciales sobre la fertilidad.
C1 noun /trækt/

tract

tracto
Meaning
an area of land; a system of organs in the body; a written pamphlet
Example
The forest tract was preserved as a wildlife sanctuary.
El tracto del bosque fue preservado como un santuario de vida silvestre.
C1 noun /ˈbaɪoʊˌsfɪr/

Biosphere

biósfera
Meaning
the regions of the surface and atmosphere of the earth occupied by living organisms
Example
Climate change is affecting the entire biosphere.
El cambio climático está afectando a toda la biósfera.
C1 adjective /ˈpɜːrtɪnənt/

pertinent

pertinente
Meaning
Relevant or applicable to a particular matter.
Example
She asked a pertinent question during the meeting.
Ella hizo una pregunta pertinente durante la reunión.
C1 verb /ˈpɜːmieɪt/

permeate

permeabilizar, penetrar, extenderse
Meaning
Spread throughout (something); pervade.
Example
The scent of fresh flowers permeated the entire room.
El aroma de las flores frescas permeó toda la habitación.
C1 noun /ˈpær.ət biːk/

Parrot Beak

pico de loro
Meaning
a climbing plant with curved red and orange flowers resembling a parrot's beak
Example
The parrot beak flower's unique curved shape makes it a fascinating addition to any garden.
La flor de pico de loro tiene una forma curva única que la convierte en una adición fascinante a cualquier jardín.
C1 adjective /ʌnˈtaɪərɪŋ/

Untiring

incansable; persistente; infatigable
Meaning
continuing without stopping; persistent; tireless
Example
Her untiring efforts finally led to success.
Sus esfuerzos incansables finalmente llevaron al éxito.
C1 noun /plʊəˈrælɪti/

plurality

pluralidad o mayoría
Meaning
the state of being multiple; the greater part or majority
Example
In the election, she won by a plurality of votes.
En la elección, ella ganó por una pluralidad de votos.
C1 adjective /ˈrɛtɪsənt/

reticent

reservado
Meaning
not revealing one's thoughts or feelings readily; reserved
Example
She was reticent about her personal life.
Ella estaba reservada sobre su vida personal.
C1 noun /ˈblɒk.ɪdʒ/

Blockage

bloqueo
Meaning
an obstruction that makes movement or flow difficult or impossible
Example
The drain blockage caused water to overflow in the kitchen.
El bloqueo del drenaje causó que el agua se desbordara en la cocina.
C1 verb /riːl/

reel

tropezar / enrollar
Meaning
to lose balance and stagger; to wind or spin something onto a reel
Example
He reeled backward after being punched.
Se tropezó hacia atrás después de ser golpeado.
C1 noun /ˈfrek.əl/

Freckle

peca
Meaning
a small brownish spot on the skin, often becoming more pronounced through exposure to the sun
Example
Her face was covered with cute freckles that appeared every summer.
Su rostro estaba cubierto de lindas pecas que aparecían cada verano.
C1 noun /ˈiː.dən/

Eden

Edén
Meaning
a place or state of great happiness; paradise
Example
The garden was like Eden, filled with beautiful flowers and peaceful atmosphere.
El jardín era como el Edén, lleno de hermosas flores y una atmósfera tranquila.
C1 noun /luː/

lieu

en lugar de
Meaning
Instead of; in place of.
Example
He gave money in lieu of flowers.
Él dio dinero en lugar de flores.
C1 noun /ˈmɛrɪɡoʊld/

Marigold

caléndula
Meaning
a bright orange or yellow flower of the daisy family, often used in gardens and ceremonies
Example
The vibrant marigold flowers added a splash of color to the festival decorations.
Las vibrantes flores de caléndula añadieron un toque de color a las decoraciones del festival.
C1 verb /ɪnˈfleɪt/

inflate

inflar
Meaning
to fill with air or gas so it expands; to increase excessively or artificially
Example
The mechanic inflated the tire to the correct pressure.
El mecánico infló el neumático a la presión correcta.
C1 noun /rentʃ/

Wrench

llave inglesa
Meaning
a tool used for gripping and turning nuts, bolts, or pipes
Example
He used a wrench to tighten the bolt.
Usó una llave inglesa para apretar el perno.
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 adjective /ˌsuː.pəˈsɒn.ɪk/

Supersonic

más rápido que la velocidad del sonido; relacionado con velocidades mayores que la del sonido
Meaning
faster than the speed of sound; relating to speeds greater than the speed of sound
Example
The supersonic jet broke the sound barrier.
El avión supersónico rompió la barrera del sonido.
C1 noun /ˈfoʊ.kəs ˈtræk.ɪŋ/

focus tracking

seguimiento del enfoque
Meaning
A technique of monitoring and maintaining attention on specific tasks or goals.
Example
Proper focus tracking improves productivity.
Un seguimiento adecuado del enfoque mejora la productividad.
C1 noun /ʌnˈfeɪθfʊlnəs/

unfaithfulness

infidelidad
Meaning
the quality of being disloyal or not faithful; breach of trust or fidelity
Example
His unfaithfulness led to the end of their marriage.
Su infidelidad llevó al fin de su matrimonio.
C1 noun /mɪˈrɑːʒ/

Mirage

espejismo
Meaning
An optical illusion caused by atmospheric conditions, especially in deserts
Example
The travelers saw a mirage of water in the desert.
Los viajeros vieron un espejismo de agua en el desierto.
C1 noun /kɔːrs flaʊər/

Course flour

harina gruesa
Meaning
coarsely ground flour with larger particles, typically used for baking bread
Example
She used course flour to make homemade bread with a rustic texture.
Ella usó harina gruesa para hacer pan casero con una textura rústica.
C1 noun /ˈpɔː.pəs/

Porpoise

delfín
Meaning
a small toothed whale with a low triangular dorsal fin and a blunt rounded snout
Example
The porpoise jumped gracefully out of the water.
El delfín saltó grácilmente fuera del agua.
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 adjective /ˌʌnəkˈnɒlɪdʒd/

unacknowledged

no reconocido
Meaning
Not recognized, admitted, or accepted; ignored or unnoticed
Example
Her contributions to the project went unacknowledged.
Sus contribuciones al proyecto pasaron desapercibidas.
C1 noun /sɪv/

sieve

colador
Meaning
a utensil with a mesh or perforated bottom, used for straining or sifting
Example
She used a sieve to strain the pasta.
Ella usó un colador para colar la pasta.
C1 verb /dɪˈsɛm.ɪ.neɪt/

disseminate

diseminar
Meaning
To spread or give out something, especially news, information, ideas, etc., to a lot of people.
Example
Social media helps to disseminate information quickly.
Las redes sociales ayudan a difundir información rápidamente.
C1 noun /ˈlʌləˌbaɪ/

lullaby

canción de cuna
Meaning
a soothing song sung to help a child fall asleep
Example
She sang a lullaby to her baby every night.
Ella cantaba una canción de cuna a su bebé todas las noches.
C1 adjective /ˈfaɪə.ri/

Fiery

ardiente; apasionado; temperamental
Meaning
burning; passionate; hot-tempered; showing strong emotion
Example
She has a fiery temper that flares up quickly.
Ella tiene un temperamento ardiente que se enciende rápidamente.
C1 noun trænˈsɛndəns

transcendence

trascendencia
Meaning
Existence or experience beyond the normal or physical level.
Example
The artist's work was a symbol of transcendence in creativity.
El trabajo del artista era un símbolo de trascendencia en creatividad.
C1 verb /ɪnˈθrɔːl/

enthrall

cautivar
Meaning
to captivate or hold someone’s attention completely
Example
The magician’s tricks enthralled the children.
Los trucos del mago cautivaron a los niños.
C1 noun /krʌˈsteɪʃən/

crustacean

animal acuático con caparazón duro
Meaning
an aquatic animal with a hard shell, such as crabs, lobsters, and shrimps
Example
Crabs and lobsters are well-known crustaceans.
Los cangrejos y langostas son conocidos crustáceos.
C1 verb /əˈbeɪt/

abate

disminuir
Meaning
to become less intense or widespread
Example
The storm began to abate after midnight.
La tormenta comenzó a disminuir después de la medianoche.
C1 verb /bɒtʃ/

botch

estropear
Meaning
to carry out a task badly or carelessly
Example
He completely botched the repair job.
Él estropeó completamente el trabajo de reparación.
C1 verb /prəˈkjʊər/

procure

conseguir
Meaning
to obtain something, especially with effort or difficulty
Example
They managed to procure enough supplies for the expedition.
Ellos lograron conseguir suficientes suministros para la expedición.
C1 adjective /daɪər/

Dire

grave; urgente; terrible
Meaning
extremely serious; urgent; terrible
Example
The country is facing a dire economic crisis.
El país está enfrentando una grave crisis económica.
C1 noun /niːʃ/

Niche

nicho de mercado, segmento especializado, mercado objetivo
Meaning
A specialized segment of the market for a particular kind of product or service.
Example
Finding the right niche is key to a successful business.
Encontrar el nicho adecuado es clave para un negocio exitoso.
C1 noun /ˈfɔː.nə/

fauna

la vida animal de una región específica
Meaning
The animal life of a particular region, habitat, or geological period.
Example
The fauna of the African savannah includes lions and elephants.
La fauna de la sabana africana incluye leones y elefantes.
C1 adjective /həˈbɪtʃuəl/

habitual

habitual
Meaning
Done or doing constantly or as a habit; customary.
Example
He was a habitual latecomer to class.
Él era un habitual retrasado en clase.
C1 noun, adjective /ˌnɒn ˈrɛzɪdənt/

non-resident

no residente
Meaning
a person who does not live in a particular country or place permanently
Example
Non-resident students often pay higher tuition fees.
Los estudiantes no residentes suelen pagar tarifas de matrícula más altas.
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 /ˈɪnfəməs/

infamous

infame
Meaning
well known for some bad quality or deed
Example
The dictator was infamous for his cruelty.
El dictador era infame por su crueldad.
C1 noun /dɪˈsɜːn.mənt/

discernment

discernimiento
Meaning
The ability to judge well or understand something correctly; keen insight.
Example
His discernment in business decisions made him successful.
Su discernimiento en las decisiones de negocios lo hizo exitoso.
C1 verb /wiːld/

wield

sujetar, usar
Meaning
To hold and use a weapon, tool, or power effectively.
Example
The warrior wielded his sword with great skill.
El guerrero usó su espada con gran habilidad.
C1 noun səˈfɪʃənsi

sufficiency

suficiencia
Meaning
The condition of being adequate or enough; adequacy.
Example
The sufficiency of food supply is critical for survival.
La suficiencia del suministro de alimentos es crítica para la supervivencia.
C1 adjective /dæft/

daft

tonto
Meaning
Silly or foolish.
Example
It was a daft idea to go hiking without water.
Fue una idea tonta ir a hacer senderismo sin agua.
C1 noun /sleɪ/

sleigh

trineo
Meaning
A vehicle pulled by horses or reindeer over snow or ice.
Example
Children were excited to ride in the sleigh through the snowy village.
Los niños estaban emocionados de montar en el trineo por el pueblo nevado.
C1 adjective /kənˈteɪ.dʒəs/

Contagious

contagioso; infeccioso
Meaning
likely to spread to and affect others; infectious
Example
Her laughter is contagious and makes everyone smile.
Su risa es contagiosa y hace sonreír a todos.
C1 noun /ˌpɒməˈdɔːrəʊ/

pomodoro

pomodoro
Meaning
A time management technique that uses a timer to break down work into intervals.
Example
The Pomodoro technique improves productivity.
La técnica Pomodoro mejora la productividad.
C1 noun /ˈɪn.floʊ/

inflow

flujo
Meaning
The movement of things such as money, people, or water into a place.
Example
The inflow of tourists boosted the local economy.
El flujo de turistas impulsó la economía local.
C1 adjective /ˌkɒmprɪˈhɛnsəbl/

comprehensible

comprensible
Meaning
able to be understood; intelligible
Example
The teacher explained the topic in a comprehensible way.
El maestro explicó el tema de una manera comprensible.
C1 noun /ˈtʌɡboʊt/

tugboat

remolcador
Meaning
a small, powerful boat used for towing or pushing ships
Example
The tugboat guided the massive ship safely into the harbor.
El remolcador guió el enorme barco de forma segura hacia el puerto.
C1 noun /ɪɡˈzɜːr.ʃən/

exertion

esfuerzo físico o mental
Meaning
Using energy or effort to achieve something.
Example
Excessive exertion can lead to fatigue and burnout.
El exceso de exertión puede llevar a la fatiga y al agotamiento.
C1 noun /ˈneɪ.vəl fɔːrs/

Naval Force

fuerzas navales
Meaning
the branch of a nation's armed services that conducts military operations at sea
Example
The naval force protected the country's coastline from enemy attacks.
Las fuerzas navales protegieron la costa del país de los ataques enemigos
C1 noun /ˈrɛtɪsəns/

reticence

reticencia
Meaning
the quality of being reserved or unwilling to speak freely
Example
His reticence made it difficult to know what he was thinking.
Su reticencia hizo que fuera difícil saber lo que estaba pensando.
C1 noun /ɪnˈtaɪərəti/

entirety

entereza
Meaning
the whole of something; the complete form
Example
He watched the movie in its entirety.
Vio la película en su totalidad.
C1 noun /rɪˈsɜː.dʒəns/

resurgence

resurgimiento
Meaning
An increase or revival after a period of little activity, popularity, or occurrence.
Example
The city saw a resurgence in tourism after the pandemic.
La ciudad vio un resurgimiento en el turismo después de la pandemia.
C1 noun /ˌriː.pəˈkʌʃ.ən/

repercussion

repercusión
Meaning
An unintended consequence occurring some time after an event or action.
Example
The economic crisis had severe repercussions on global trade.
La crisis económica tuvo severas repercusiones en el comercio global.
C1 noun,verb /pleɪt/

plait

trenza
Meaning
a braid of hair or straw; to braid
Example
She decided to plait her hair before the party.
Ella decidió trenzarse el cabello antes de la fiesta.
C1 noun /ˈfɛləni/

felony

delito grave
Meaning
a serious crime, usually punishable by imprisonment for more than one year
Example
He was convicted of a felony and sentenced to ten years in prison.
Fue condenado por un delito grave y sentenciado a diez años de prisión.
C1 verb /ˈlɪbəreɪt/

liberate

liberar
Meaning
to set free from imprisonment, oppression, or restraint
Example
The army liberated the city from enemy control.
El ejército liberó la ciudad del control enemigo.
C1 phrase ˈiː.kəʊˌsɪs.təm kəˈlæps

ecosystem collapse

colapso del ecosistema
Meaning
The complete breakdown of an ecological system, resulting in the inability to maintain its structure and function.
Example
Unchecked deforestation can lead to ecosystem collapse.
La deforestación incontrolada puede llevar al colapso del ecosistema.
C1 noun /ˈrɛvərəns/

reverence

reverencia
Meaning
deep respect for someone or something
Example
The students showed reverence to their teacher.
Los estudiantes mostraron reverencia hacia su maestro.
C1 noun /kəˈnɛəri/

canary

canario
Meaning
a small, usually yellow bird known for its singing; also used as a warning sign in dangerous conditions
Example
The canary sang beautifully in its cage.
El canario cantaba hermosamente en su jaula.
C1 noun /ɪnˈtruː.ʒən/

intrusion

intrusión no autorizada
Meaning
Unauthorized entry into a system or place without permission
Example
The company detected an intrusion in its server.
La empresa detectó una intrusión en su servidor.
C1 adjective /dɪˈlɪriəs/

delirious

delirante
Meaning
in an extremely disturbed or excited state of mind, often due to illness or emotion
Example
He was delirious with fever and kept muttering nonsense.
Él estaba delirante con fiebre y seguía murmurando tonterías.
C1 noun /hɪm/

hymn

himno
Meaning
A religious song or poem of praise to God or a deity.
Example
The congregation sang a hymn during the morning service.
La congregación cantó un himno durante el servicio de la mañana.
C1 noun /ɒpˈtɒmɪtrɪst/

optometrist

optometrista
Meaning
A healthcare professional who examines eyes and prescribes corrective lenses.
Example
The optometrist prescribed new glasses for her.
El optometrista le recetó nuevos anteojos.
C1 adjective/verb /ˈwɒrəntɪd/

warranted

justificado
Meaning
Justified or authorized under the circumstances.
Example
Her anger was warranted after the unfair treatment.
Su enojo fue justificado después del trato injusto.
C1 noun /ˈpæd.ək/

paddock

campo cerrado para caballos u otros animales
Meaning
a small enclosed field where horses or other animals are kept
Example
The horses were grazing in the paddock.
Los caballos estaban pastando en el paddock.
C1 adjective /ˌrɛmɪˈnɪsənt/

reminiscent

rememorativo
Meaning
Tending to remind one of something; suggestive of something in the past.
Example
The smell of rain is reminiscent of my childhood in the village.
El olor a lluvia es rememorativo de mi infancia en el pueblo.
C1 noun /ɪmˈpɛd.ɪ.mənt/

impediment

obstáculo
Meaning
A hindrance or obstruction in doing something; something that prevents progress.
Example
Lack of funds is a major impediment to the project.
La falta de fondos es un gran obstáculo para el proyecto.
C1 noun ɪnˈsɒl.vən.si

insolvency

insolvencia
Meaning
The state of being unable to pay debts owed; bankruptcy.
Example
The company declared insolvency after years of losses.
La empresa declaró la insolvencia después de años de pérdidas.
C1 noun /haɪˈeɪtəs/

hiatus

hiato
Meaning
A pause or break in continuity of a process or activity.
Example
The show returned after a long hiatus.
El show regresó después de un largo hiato.
C1 noun /kənˈfɔːrmɪst/

conformist

conformista
Meaning
A person who uncritically conforms to established practices or standards.
Example
She was labeled a conformist for always following the crowd.
Ella fue etiquetada como conformista por siempre seguir a la multitud.
C1 verb /ˌmɪsˈriːd/

misread

leer mal
Meaning
to read something incorrectly or interpret wrongly
Example
He misread the instructions and built the shelf incorrectly.
Él leyó mal las instrucciones y construyó la estantería incorrectamente.
C1 adjective /riˈækʃəˌneri/

reactionary

reaccionario
Meaning
Opposing political or social progress or reform; extremely conservative.
Example
The group took a reactionary stance against the new policies.
El grupo adoptó una postura reaccionaria contra las nuevas políticas.
C1 noun /dʒest/

Jest

broma; chiste
Meaning
a thing said or done for amusement; a joke
Example
His comment was made in jest, not to offend anyone.
Su comentario fue hecho en broma, no para ofender a nadie.
C1 verb /ˈɪmprəvaɪz/

improvise

improvisar
Meaning
To create or perform something spontaneously without preparation.
Example
The actor had to improvise his lines when he forgot the script.
El actor tuvo que improvisar sus líneas cuando olvidó el guion.
C1 verb /məˈruːn/

maroon

abandonar en una isla desierta
Meaning
to leave someone trapped and isolated, especially on an island
Example
The sailors were marooned on a deserted island.
Los marineros fueron abandonados en una isla desierta.
C1 noun /ˈdɔːrˌkiːpər/

doorkeeper

portero
Meaning
A person whose job is to guard or manage the entrance of a building or room.
Example
The doorkeeper checked everyone’s passes before they entered the hall.
El doorkeeper revisó los pases de todos antes de que entraran al salón.
C1 noun /ɪmˈpjʊərəti/

impurity

impureza
Meaning
the state of being unclean or contaminated; a substance that makes something impure
Example
The scientist removed every impurity from the water sample.
El científico eliminó toda impureza de la muestra de agua.
C1 adjective /ɪˈmoʊbəl/

immobile

inmóvil
Meaning
unable to move or be moved
Example
After the accident, he was immobile for weeks.
Después del accidente, estuvo inmóvil durante semanas.
C1 adjective ɪnˈkʌm.bənt

incumbent

obligatorio
Meaning
necessary for (someone) as a duty or responsibility.
Example
It is incumbent upon all citizens to obey the law.
Es obligatorio para todos los ciudadanos obedecer la ley.
C1 noun /prəˈpraɪəti/

propriety

decoro
Meaning
Conformity to accepted standards of behavior or morality.
Example
He always behaved with the utmost propriety in public.
Siempre se comportaba con el máximo decoro en público.
C1 noun /pəˈraɪə/

pariah

paria
Meaning
An outcast; someone who is rejected by society or a social group.
Example
After the scandal, he became a social pariah.
Después del escándalo, se convirtió en un paria social.
C1 adjective /ˈpɛtjʊlənt/

petulant

irritable
Meaning
Childishly sulky or bad-tempered.
Example
The child became petulant when denied more candy.
El niño se volvió irritable cuando no le dieron más dulces.
C1 verb /əˈliː.vi.eɪt/

alleviate

aliviar o mitigar
Meaning
To make suffering, deficiency, or a problem less severe; to relieve or ease.
Example
Meditation can alleviate stress and improve focus.
La meditación puede aliviar el estrés y mejorar el enfoque.
C1 noun /ˈveɪpəraɪzər/

vaporizer

vaporizador
Meaning
a device that turns a liquid into vapor, often for inhalation
Example
She used a vaporizer to ease her cough.
Ella usó un vaporizador para aliviar su tos.
C1 verb /hoʊn/

hone

afilar, mejorar habilidades
Meaning
To sharpen a blade or to improve a skill through practice.
Example
She honed her presentation skills before the big meeting.
Ella perfeccionó sus habilidades de presentación antes de la gran reunión.
C1 adjective /ˈskɛtʃi/

sketchy

incompleto
Meaning
not thorough or detailed; suspicious or unsafe
Example
The details of the project were still sketchy.
Los detalles del proyecto aún estaban incompletos.
C1 noun sɜːrˈkeɪdiən ˈrɪðəm

circadian rhythm

ritmo circadiano
Meaning
The body's natural sleep-wake cycle that occurs within 24 hours
Example
Exposure to natural light regulates the circadian rhythm.
La exposición a la luz natural regula el ritmo circadiano.
C1 verb /ˈɛm.ə.neɪt/

emanate

emanar
Meaning
To come out or spread from a source.
Example
A sweet fragrance emanated from the garden.
Una dulce fragancia emanó del jardín.
C1 adjective /ɪnˈtɒl.ər.ə.bəl/

Intolerable

intolerable
Meaning
unable to be endured; extremely unpleasant or painful
Example
The noise from the construction site was intolerable.
El ruido de la obra de construcción era intolerable.
C1 verb /ˈɒs.ɪ.leɪt/

oscillate

moverse o balancearse de un lado a otro entre dos puntos o estados
Meaning
To swing or move back and forth between two points or states
Example
The stock market tends to oscillate during uncertain times.
El mercado de valores tiende a oscilar durante tiempos inciertos.
C1 noun /ˈeɪθiɪzəm/

atheism

ateísmo
Meaning
The belief that there is no God or gods.
Example
He declared his atheism openly despite social pressure.
Él declaró su ateísmo abiertamente a pesar de la presión social.
C1 noun /ˈælkəmi/

alchemy

alquimia
Meaning
A medieval practice combining elements of chemistry and philosophy, aimed at transforming matter, especially turning base metals into gold.
Example
Medieval scientists devoted their lives to alchemy.
Los científicos medievales dedicaron sus vidas a la alquimia.
C1 noun /ˈwɪndfɔːl/

windfall

ganancia inesperada
Meaning
an unexpected piece of good fortune, typically a large amount of money
Example
The startup received a windfall when a major client paid for a full year in advance.
La startup recibió una ganancia inesperada cuando un cliente importante pagó por un año completo por adelantado.
C1 noun /ɪnˈdaɪtmənt/

indictment

acusación formal
Meaning
a formal charge or accusation of a serious crime
Example
The indictment accused the company of multiple violations.
La acusación formal acusó a la empresa de múltiples violaciones.
C1 adjective /ˈrɪkɪti/

rickety

deteriorado
Meaning
Poorly made and likely to collapse; shaky.
Example
They crossed a rickety wooden bridge over the river.
Cruzaron un puente de madera deteriorado sobre el río.
C1 noun /æbˈstrækʃən/

abstraction

abstracción
Meaning
the process of forming general ideas by removing specific details; an abstract concept or idea
Example
Abstraction allows complex ideas to be represented in a simplified form.
La abstracción permite representar ideas complejas de forma simplificada.
C1 adjective /ˈskwiːmɪʃ/

squeamish

fácilmente propenso a sentirse enfermo, mareado o disgustado
Meaning
easily made to feel sick, faint, or disgusted
Example
She felt squeamish at the sight of blood.
Se sintió mareada al ver sangre.
C1 adjective /ˈsɜːrvɪsəbl/

serviceable

utilizable
Meaning
fit for use; usable; in working order
Example
The old bicycle is still serviceable despite its age.
La bicicleta vieja sigue siendo utilizable a pesar de su edad.
C1 adjective /ˈspaɪni/

spiny

espinoso
Meaning
covered with or full of spines; having sharp points
Example
The spiny cactus stood tall in the desert.
El cactus espinoso se alzaba alto en el desierto.
C1 noun /ˈɔr.i.ənt/

Orient

Oriente, especialmente los países de Asia oriental
Meaning
the East, especially countries of eastern Asia; to determine one's position or direction
Example
Many spices come from the Orient.
Muchas especias vienen del Oriente.
C1 adjective /ɪnˈtrɛntʃt/

entrenched

arraigado
Meaning
Firmly established and unlikely to change.
Example
Corruption is deeply entrenched in the system.
La corrupción está profundamente arraigada en el sistema.