calculus
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C1 noun /ˈkælkjʊləs/

calculus

cálculo
Meaning
A branch of mathematics concerned with rates of change and accumulation; also a hard mineral deposit in the body such as on teeth.
Example
Calculus is essential for advanced studies in physics and engineering.
El cálculo es esencial para los estudios avanzados en física e ingeniería.
C1 adjective /ˈɪntrɪkət/

intricate

intrincado
Meaning
very detailed, complex, and difficult to understand
Example
The artist created an intricate pattern on the wall.
El artista creó un patrón intrincado en la pared.
C1 verb ˈdwɪn.dl

dwindle

disminuir
Meaning
To diminish gradually in size, amount, or strength; to become progressively smaller.
Example
His savings dwindled due to unexpected expenses.
Sus ahorros disminuyeron debido a gastos inesperados.
C1 noun /ˌæntɪˈsiːdənts/

antecedents

antecedentes
Meaning
previous events, conditions, or people that influence or serve as a basis for something that follows
Example
The lawyer examined the criminal antecedents of the suspect.
El abogado examinó los antecedentes criminales del sospechoso.
C1 noun /oʊˈveɪʃən/

ovation

ovación
Meaning
an enthusiastic show of approval, especially by clapping hands
Example
The actor received a standing ovation after his performance.
El actor recibió una ovación de pie después de su actuación.
C1 noun /ˈjuːlədʒi/

eulogy

elogio
Meaning
A speech or piece of writing that praises someone, especially after their death.
Example
Her brother delivered a heartfelt eulogy at the funeral.
Su hermano pronunció un sentido elogio en el funeral.
C1 adjective /ˈstɛriəˌtaɪpt/

stereotyped

estereotipado
Meaning
Conforming to a fixed or oversimplified idea of what someone or something is like.
Example
His stereotyped jokes failed to impress the audience.
Sus chistes estereotipados no lograron impresionar a la audiencia.
C1 noun /pəˈfjuː.mər.i/

perfumery

industria de perfumes
Meaning
the art, business, or products of making perfumes
Example
She works in a perfumery that creates luxury scents.
Ella trabaja en una perfumería que crea aromas de lujo.
C1 noun /ɪnˈfɜːməri/

infirmary

hospital
Meaning
A hospital or place where the sick or injured are cared for.
Example
The school had an infirmary for minor injuries.
La escuela tenía un hospital para lesiones menores.
C1 verb /ˈpætər/

patter

hacer un sonido repetido de golpecitos suaves / hablar rápidamente de manera mecánica
Meaning
to make a repeated light tapping sound; to talk quickly in a rehearsed or mechanical way
Example
Rain pattered softly on the window.
La lluvia golpeaba suavemente en la ventana.
C1 adjective /ədˈhiːsɪv/

Adhesive

pegajoso
Meaning
আঠালো; চটচটে;
Example
The adhesive tape stuck firmly to the wall.
La cinta adhesiva se pegó firmemente a la pared.
C1 verb /ˈkʌn.dʒər/

conjure

conjurar
Meaning
to summon something as if by magic; to imagine vividly
Example
The magician conjured a rabbit out of the hat.
El mago conjuró un conejo de su sombrero.
C1 verb /dɪsˈpleɪs/

displace

desplazar
Meaning
to force someone or something out of their usual or original position; to replace or substitute
Example
The new technology will displace many traditional manufacturing jobs.
La nueva tecnología desplazará muchos trabajos tradicionales de manufactura.
C1 verb /druːp/

droop

caer
Meaning
to bend or hang downward; to become weak or tired
Example
The flowers began to droop in the heat.
Las flores empezaron a caer debido al calor.
C1 noun /ˈsɑːɡə/

saga

gran historia
Meaning
A long story of heroic achievement, or a long, complex series of events.
Example
The company's rise and fall became a corporate saga.
El ascenso y la caída de la empresa se convirtió en una saga corporativa.
C1 noun ɪˌlæˈstɪs.ə.ti

elasticity

elasticidad
Meaning
The responsiveness of demand or supply to changes in price.
Example
The elasticity of demand for luxury goods is high.
La elasticidad de la demanda de bienes de lujo es alta.
C1 verb /ˈsɪn.θə.saɪz/

synthesize

sintetizar
Meaning
To combine a number of things into a coherent whole.
Example
Scientists synthesize new compounds for medical research.
Los científicos sintetizan nuevos compuestos para la investigación médica.
C1 verb /kraʊtʃ/

crouch

agacharse
Meaning
to bend your knees and lower your body close to the ground
Example
The cat crouched before leaping at its prey.
El gato se agachó antes de saltar hacia su presa.
C1 noun /aɪ/

aye

sí
Meaning
an affirmative vote or expression of agreement
Example
The committee voted aye on the proposal.
El comité votó sí en la propuesta.
C1 adjective /ˈɡrʌdʒɪŋ/

grudging

renuente
Meaning
Reluctant or unwilling; given or allowed only with hesitation.
Example
She gave him a grudging smile after the argument.
Le dio una sonrisa renuente después de la discusión.
C1 noun /ˌʌl.tɪˈmeɪ.təm/

Ultimatum

ultimátum
Meaning
a final demand or statement of terms, the rejection of which will result in retaliation
Example
The boss gave him an ultimatum: improve or be fired.
El jefe le dio un ultimátum: mejora o serás despedido.
C1 adjective/verb /ˈleɪ.bərd/

labored

laborioso
Meaning
done with great effort and difficulty; or past tense of labor
Example
He gave a labored explanation that confused the audience.
Él dio una explicación trabajosa que confundió a la audiencia.
C1 noun /ˈɒktəɡən/

octagon

octágono
Meaning
A polygon with eight sides and eight angles.
Example
The stop sign is shaped like an octagon.
La señal de alto tiene forma de octágono.
C1 noun /ˈheɪl.stɔːrm/

Hailstorm

tormenta de granizo
Meaning
a violent storm with hail falling from the sky
Example
The hailstorm damaged many cars in the parking lot.
La tormenta de granizo dañó muchos autos en el estacionamiento.
C1 noun /ˈrɪpəl/

Ripple

onda
Meaning
a small wave on the surface of water; a spreading effect or influence
Example
The stone created ripples across the calm pond.
La piedra creó ondas en el tranquilo estanque.
C1 adjective /ˈdiːviəs/

devious

astuto
Meaning
Skillful at using underhanded tactics to achieve goals; not straightforward.
Example
He used a devious plan to gain control of the company.
Usó un plan astuto para ganar el control de la empresa.
C1 noun /ˈpær.ə.saɪt/

Parasite

parásito
Meaning
an organism that lives on or in another organism and benefits at its expense; a person who depends on others
Example
The dog was treated for intestinal parasites.
El perro fue tratado para parásitos intestinales.
C1 adjective /ˈɪmpjəd(ə)nt/

impudent

descarado, insolente
Meaning
not showing due respect for another person; rude
Example
The impudent child talked back to the teacher.
El niño descarado le contestó al maestro.
C1 adverb /ˌhɛdˈfɜrst/

headfirst

cabeza adelante
Meaning
With the head leading; in a reckless or hasty manner.
Example
He dived headfirst into the pool.
Se zambulló cabeza primero en la piscina.
C1 noun /ˈfreɪlti/

frailty

fragilidad
Meaning
The condition of being weak, delicate, or easily broken.
Example
Old age often comes with physical frailty.
La vejez a menudo viene con fragilidad física.
C1 verb /daʊs/

douse

apagar / verter
Meaning
to pour liquid over; to extinguish a fire or light
Example
Firefighters doused the flames with water.
Los bomberos apagaron las llamas con agua.
C1 adjective /səbˈmɪs.ɪv/

Submissive

sumiso; obediente; sumiso
Meaning
ready to obey others; yielding to authority; humble and compliant
Example
She became submissive after years of harsh treatment.
Se volvió sumisa después de años de trato severo.
C1 verb /ˈbrændɪʃ/

brandish

agitar
Meaning
to wave or flourish something, especially a weapon, in a threatening or showy way
Example
He brandished a sword to scare off the intruders.
Él brandió una espada para asustar a los intrusos.
C1 noun /ˈsəʊdiəm/

sodium

sodio
Meaning
a soft, silver-white chemical element that is highly reactive and found in salt.
Example
Sodium is an essential element for maintaining fluid balance in the body.
El sodio es un elemento esencial para mantener el equilibrio de líquidos en el cuerpo.
C1 adjective /ˈmuː.və.bl̩/

Movable

movible; portátil; transferible
Meaning
capable of being moved; not fixed in position
Example
The furniture is movable so we can rearrange the room easily.
Los muebles son movibles, por lo que podemos reorganizar la habitación fácilmente.
C1 verb /feɪn/

feign

fingir, simular
Meaning
to pretend or fake; to give a false appearance of
Example
She feigned illness to avoid going to work.
Ella fingió estar enferma para evitar ir a trabajar.
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, verb /məˈnuː.vər/

maneuver

maniobra / hábil
Meaning
a planned or skillful movement or action; to move skillfully or carefully
Example
The pilot maneuvered the plane through the storm.
El piloto maniobró el avión a través de la tormenta.
C1 adjective /ˈtʃɛkərd/

chequered

a rayas
Meaning
Having a pattern of squares, or marked by varied and contrasting experiences or periods.
Example
He had a chequered career with both great successes and failures.
Tuvo una carrera a rayas con grandes éxitos y fracasos.
C1 verb /dʌb/

dub

doblar
Meaning
to give a name or label to something; to add a soundtrack to a film or recording
Example
The movie was dubbed into several languages for international release.
La película fue doblada a varios idiomas para su lanzamiento internacional.
C1 noun /dɪˈvɪnɪti/

divinity

divinidad
Meaning
The quality or state of being divine; a deity.
Example
The priest spoke about the divinity of the soul.
El sacerdote habló sobre la divinidad del alma.
C1 verb /ˈsmoʊldər/

smolder

ardecer lentamente
Meaning
to burn slowly with smoke but no flame; to show suppressed anger or emotion
Example
The fire smoldered for hours before it went out.
El fuego ardió lentamente durante horas antes de apagarse.
C1 verb /diːˈfɒrɪst/

deforest

desforestar
Meaning
to clear an area of trees, usually on a large scale
Example
The region has been heavily deforested for agriculture.
La región ha sido deforestada en gran medida para la agricultura.
C1 noun /ˈsʌm.ɪt əv ðə ˈfjuː.tʃər/

Summit of the Future

Cumbre del futuro
Meaning
A high-level conference focused on addressing future challenges and opportunities.
Example
The Summit of the Future addressed global challenges.
La Cumbre del Futuro abordó los desafíos globales.
C1 adjective /əˈbaɪdɪŋ/

abiding

perpetuo
Meaning
lasting for a long time; enduring
Example
She had an abiding love for her hometown.
Ella tenía un amor perpetuo por su ciudad natal.
C1 noun /ˈkæv.əl.ri/

Cavalry

caballería
Meaning
soldiers who fight on horseback; the part of an army formerly composed of troops on horseback
Example
The cavalry charged across the field with great speed.
La caballería cargó a través del campo con gran velocidad.
C1 noun /ˈfjuː.tʃə.rɪst/

futurist

futurista
Meaning
A person who studies or predicts the future, especially trends in science, technology, or society.
Example
The futurist predicted major changes in transportation within the next decade.
El futurista predijo grandes cambios en el transporte dentro de la próxima década.
C1 noun /ˈpɪl.fər.ɪdʒ/

Pilferage

hurto
Meaning
the theft of small amounts or items, especially from one's workplace
Example
The company installed cameras to prevent pilferage.
La empresa instaló cámaras para prevenir el hurto.
C1 verb /ˈtiːtər/

teeter

tambalear
Meaning
to move or balance unsteadily; to wobble
Example
The glass began to teeter on the edge of the table.
El vaso comenzó a tambalearse en el borde de la mesa.
C1 verb /ˈkɒnsɔːrt/

consort

compañero, consorte real
Meaning
To associate with someone, typically with disapproval; also, a spouse of a reigning monarch.
Example
He was criticized for consorting with criminals.
Fue criticado por asociarse con criminales.
C1 verb /pɜːrtʃ/

perch

posarse en algo alto o estrecho
Meaning
To sit or rest on something high or narrow.
Example
The bird perched on the fence.
El pájaro se posó en la valla.
C1 adjective /rɪˈsɜːrdʒənt/

resurgent

resurgente
Meaning
Becoming strong, active, or popular again.
Example
The resurgent economy gave hope to many businesses.
La economía resurgente dio esperanza a muchos negocios.
C1 noun /ˈsteɪl.meɪt/

stalemate

empate
Meaning
A situation in which no progress can be made or no party can win.
Example
Negotiations ended in a stalemate.
Las negociaciones terminaron en un empate.
C1 adjective ˈfɔːr.mɪ.də.bəl

formidable

formidable
Meaning
Inspiring fear or respect through being impressively large, powerful, intense, or capable.
Example
The boxer was a formidable opponent in the ring.
El boxeador era un oponente formidable en el ring.
C1 noun /ˌdiːpɔːrˈteɪʃən/

deportation

deportación
Meaning
The act of expelling a foreigner from a country.
Example
The deportation of hundreds of workers sparked international criticism.
La deportación de cientos de trabajadores provocó críticas internacionales.
C1 noun /ˈfɔːr.teɪ/ or /fɔːrt/

forte

fortaleza
Meaning
a strong ability or talent; something one does particularly well
Example
Cooking is definitely her forte.
Cocinar es definitivamente su fortaleza.
C1 noun /vʌlˈɡær.ɪ.ti/

Vulgarity

vulgaridad
Meaning
the quality of being rude, offensive, or indecent; lack of sophistication or good taste
Example
The comedian's jokes were criticized for their vulgarity.
Los chistes del comediante fueron criticados por su vulgaridad.
C1 adjective /prəˈfeɪn/

profane

profano, irreverente
Meaning
showing disrespect or contempt for sacred things; irreverent or vulgar
Example
His jokes were considered too profane for the ceremony.
Sus chistes fueron considerados demasiado profanos para la ceremonia.
C1 adjective ˈtæs.ɪt

tacit

tácito
Meaning
Understood or implied without being openly expressed or stated
Example
Their mutual understanding was based on tacit agreement.
Su comprensión mutua se basó en un acuerdo tácito.
C1 adjective /ˈtɒp.məʊst/

Topmost

más alto; superior
Meaning
highest in position or rank
Example
The flag was placed on the topmost branch of the tree.
La bandera fue colocada en la rama más alta del árbol.
C1 noun /ˈhʌbʌb/

hubbub

alboroto
Meaning
a loud noise caused by a crowd of people talking or shouting
Example
There was a hubbub in the market as the sale began.
Hubo un alboroto en el mercado cuando comenzó la venta.
C1 noun /ˈkleɪmənt/

claimant

reclamante
Meaning
a person who makes a claim, especially in a legal or financial context
Example
The claimant filed for compensation after the accident.
El reclamante presentó una solicitud de compensación después del accidente.
C1 adjective /ˈræmpənt/

rampant

rampante
Meaning
existing or spreading unchecked, often in an undesirable way
Example
Corruption was rampant in the city administration.
La corrupción estaba rampante en la administración de la ciudad.
C1 noun /kənˈsep.ʃən/

Conception

concepción; idea; fertilización
Meaning
the forming of an idea or plan; the fertilization of an ovum by a sperm; the action of conceiving
Example
The conception of this innovative project took several months of brainstorming.
La concepción de este proyecto innovador tomó varios meses de lluvia de ideas.
C1 noun /tɒŋ/

tong

tenaza
Meaning
a tool with two movable arms used to pick up and hold objects
Example
He used the tong to pick up the hot coal.
Él usó la tenaza para levantar el carbón caliente.
C1 noun /ˈkaʊntərˌpɔɪnt/

counterpoint

contrapunto
Meaning
an argument, idea, or theme contrasting with another; also a musical term for independent melody
Example
Her calm attitude was a counterpoint to his anger.
Su actitud tranquila fue un contrapunto a su ira.
C1 verb/noun /ˈkwɪbəl/

quibble

discutir sobre algo trivial
Meaning
To argue or raise objections about a trivial matter; a petty objection.
Example
They quibbled over who should pay the bill.
Ellos discutieron sobre quién debía pagar la cuenta.
C1 noun /ˈsɒnɪt/

sonnet

soneto
Meaning
A poem of 14 lines using formal rhyme schemes, often about love.
Example
Shakespeare wrote many famous sonnets about love and beauty.
Shakespeare escribió muchos sonetos famosos sobre el amor y la belleza.
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, 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 /dɪˌpriː.ʃiˈeɪ.ʃən/

depreciation

depreciación
Meaning
A reduction in the value of an asset with the passage of time, due to wear and tear.
Example
The car's depreciation rate is high after five years.
La tasa de depreciación del coche es alta después de cinco años.
C1 noun /noʊz rɪŋ/

Nose ring

anillo de nariz
Meaning
a piece of jewelry worn through a piercing in the nose
Example
She got a small gold nose ring for her birthday.
Ella consiguió un pequeño anillo de oro para su cumpleaños.
C1 noun /ɪkˈspoʊnənt/

exponent

exponente
Meaning
a person who supports, promotes, or explains an idea; in math, a symbol denoting power
Example
She is a leading exponent of modern dance.
Ella es una de las principales exponentes de la danza moderna.
C1 noun /diːˈkrɪp.ʃən/

decryption

desencriptación
Meaning
The process of converting encrypted data back into its original form so it can be understood.
Example
Hackers attempted decryption of classified data.
Los hackers intentaron la desencriptación de datos clasificados.
C1 adjective /ˈniːd.ləs/

Needless

innecesario
Meaning
unnecessary; not required; without purpose
Example
The argument was needless and could have been avoided.
La discusión fue innecesaria y podría haberse evitado.
C1 noun /ˈmænər/

manor

mansión
Meaning
A large country house with lands; the main house of an estate.
Example
The old manor stood proudly on the hill for centuries.
La vieja mansión se erguía orgullosa sobre la colina durante siglos.
C1 noun /ˈkriː.dəns/

credence

creencia, aceptación
Meaning
belief in or acceptance of something as true
Example
The witness gave credence to the defendant's alibi.
El testigo dio credibilidad a la coartada del acusado.
C1 noun /ˌfæb.rɪˈkeɪ.ʃən/

fabrication

invención falsa
Meaning
The invention of false or misleading information; a lie or falsehood.
Example
The article was full of fabrication and misleading claims.
El artículo estaba lleno de invenciones falsas y reclamos engañosos.
C1 adverb /ˈkɔːrdiəli/

Cordially

cordialmente
Meaning
in a warm and friendly manner; sincerely
Example
You are cordially invited to our wedding ceremony.
Estás cordialmente invitado a nuestra ceremonia de boda.
C1 noun /ˈsɜːr.vɪ.tuːd/

Servitude

servidumbre
Meaning
the state of being a slave or completely subject to someone more powerful
Example
Many people fought to escape the servitude imposed by the colonial system.
Muchas personas lucharon por escapar de la servidumbre impuesta por el sistema colonial.
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 adjective /ˈdɛkədənt/

decadent

decadente, lujoso
Meaning
Characterized by or reflecting a state of moral or cultural decline; excessively self-indulgent.
Example
The party was filled with decadent luxury and excess.
La fiesta estuvo llena de lujo decadente y exceso.
C1 adjective /ɪmˈpɜːrviəs/

impervious

impermeable
Meaning
Not allowing fluid to pass through; unable to be affected by something.
Example
The jacket is impervious to rain.
La chaqueta es impermeable a la lluvia.
C1 verb /ˌpriːˈmɛdɪteɪt/

premeditate

premeditar
Meaning
to think about and plan something (especially a crime) beforehand
Example
The suspect was accused of premeditating the crime.
El sospechoso fue acusado de premeditar el crimen.
C1 noun /ˈstɪmjʊlənt/

stimulant

estimulante
Meaning
A substance that raises levels of physiological or nervous activity in the body.
Example
Coffee is a common stimulant that helps people stay awake.
El café es un estimulante común que ayuda a las personas a mantenerse despiertas
C1 adjective /ɪkˈspænsɪv/

expansive

expansivo
Meaning
covering a wide area or having a wide range of ideas or emotions
Example
They enjoyed the expansive view from the hilltop.
Disfrutaron de la vista expansiva desde la cima de la colina.
C1 noun /əˈkʌmplɪs/

accomplice

cómplice
Meaning
a person who helps another commit a crime
Example
The thief was arrested along with his accomplice.
El ladrón fue arrestado junto con su cómplice.
C1 noun /ˈhɜːrbɪsaɪd/

herbicide

herbicida
Meaning
A chemical substance used to kill unwanted plants, especially weeds.
Example
Farmers used herbicide to protect their crops from invasive weeds.
Los agricultores usaron herbicidas para proteger sus cultivos de las malezas invasoras.
C1 verb /kəˈrəʊd/

corrode

corroer
Meaning
to gradually destroy or wear away metal or other materials through chemical action
Example
The iron pipes corroded over time due to exposure to water.
Las tuberías de hierro se corrodieron con el tiempo debido a la exposición al agua.
C1 noun /ˈbeɪlɪf/

bailiff

oficial de la corte
Meaning
An official who keeps order in a court, carries out court orders, or collects debts.
Example
The bailiff asked everyone to rise as the judge entered the courtroom.
El oficial de la corte pidió a todos que se pusieran de pie cuando el juez entró a la sala.
C1 adjective /ɪnˈtɛlɪdʒəbl/

intelligible

Meaning
Able to be understood; clear enough to be comprehended.
Example
Her speech was barely intelligible over the noise.
C1 adjective /ˈpjuːtrɪd/

putrid

podrido
Meaning
decayed and emitting a foul smell
Example
The garbage smelled putrid after days in the sun.
La basura olía a podrido después de varios días al sol.
C1 noun/verb /dɪsˈkwaɪət/

disquiet

inquietud
Meaning
A feeling of worry or unease; to make someone feel anxious or uneasy.
Example
The strange silence filled the room with disquiet.
El extraño silencio llenó la habitación de inquietud.
C1 noun /ˌdɪs.ɪˈluː.ʒən.mənt/

disillusionment

desilusión
Meaning
A feeling of disappointment resulting from the discovery that something is not as good as one believed it to be.
Example
Many people experience disillusionment after unrealistic expectations.
Muchas personas experimentan desilusión después de expectativas poco realistas.
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 adjective /təˈren.ʃəl/

Torrential

tormentoso; lluvia intensa
Meaning
falling rapidly in copious streams; extremely heavy rainfall
Example
The torrential rain flooded the streets within hours.
La lluvia torrencial inundó las calles en pocas horas.
C1 noun /heɪz/

Haze

neblina
Meaning
a slight obscuration of the lower atmosphere, typically caused by fine suspended particles; confusion
Example
The morning haze lifted gradually as the sun rose higher in the sky.
La neblina matutina se levantó gradualmente a medida que el sol se elevaba más alto en el cielo.
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 verb /ˈvɛnəˌreɪt/

venerate

venerar
Meaning
to regard with great respect; revere
Example
People venerate saints for their holiness.
La gente venera a los santos por su santidad.
C1 noun /kjʊˈreɪtər/

curator

curador
Meaning
a person who is responsible for the care and management of a museum, gallery, or collection
Example
The curator organized a new exhibition of ancient artifacts.
El curador organizó una nueva exposición de artefactos antiguos.
C1 adjective /ˈkɒnvɛks/

convex

convexo, redondeado hacia afuera
Meaning
curved or rounded outward
Example
The lens has a convex shape to focus light.
La lente tiene una forma convexa para enfocar la luz.
C1 noun /ˈtɒpˌsɔɪl/

topsoil

capa superficial del suelo
Meaning
the top layer of soil, which is rich in organic matter and nutrients
Example
Farmers rely on healthy topsoil for good crop yields.
Los agricultores dependen de un suelo superficial saludable para obtener buenos rendimientos de cosecha.
C1 adjective /ˈwɪst.fəl/

Wistful

melancólico; nostálgico
Meaning
having a feeling of longing or yearning; melancholy
Example
She gave a wistful smile when remembering her childhood days.
Ella dio una sonrisa melancólica cuando recordaba sus días de infancia.
C1 verb /ˈdɛprɪˌkeɪt/

deprecate

desaprobar
Meaning
to express disapproval of something
Example
The teacher deprecated the use of slang in academic essays.
El maestro desaprobó el uso de jerga en ensayos académicos.
C1 adjective /ʌnˈkwes.tʃən.ə.bl̩/

Unquestionable

indiscutible; seguro
Meaning
not able to be disputed or doubted; certain and beyond doubt
Example
Her honesty and integrity are unquestionable qualities.
Su honestidad e integridad son cualidades indiscutibles.
C1 noun /fɔːrˈmæl.ə.ti/

Formality

formalidad
Meaning
the rigid observance of rules of convention or etiquette; a thing done simply to comply with requirements
Example
The signing of the contract was just a formality; the deal was already agreed upon.
La firma del contrato fue solo una formalidad; el acuerdo ya estaba acordado.
C1 noun /ˈroʊdənt/

rodent

roedor
Meaning
a small mammal such as a mouse, rat, or squirrel, characterized by constantly growing incisors
Example
The farmer set traps to catch the rodents in his barn.
El granjero puso trampas para atrapar los roedores en su granero.
C1 adjective ˌsəʊsɪəʊpəˈlɪtɪkəl

sociopolitical

sociopolítico
Meaning
Combining social and political factors.
Example
Sociopolitical factors often influence public policy decisions.
Los factores sociopolíticos a menudo influyen en las decisiones de políticas públicas.
C1 noun /ˌdɪsəˈluːʃən/

dissolution

disolución
Meaning
the act of formally ending or breaking apart something, such as an organization or marriage
Example
The dissolution of the company was announced yesterday.
La disolución de la empresa fue anunciada ayer.
C1 noun /ˈtriːzən/

Treason

traición
Meaning
the crime of betraying one's country, especially by attempting to kill or overthrow the sovereign or government
Example
He was accused of treason against the state.
Él fue acusado de traición contra el estado.
C1 noun, verb /ɡliːm/

gleam

destello
Meaning
a small or brief shining light; to shine softly
Example
A gleam of hope appeared in her eyes.
Apareció un destello de esperanza en sus ojos.
C1 noun /ɪnˈdem.nə.ti/

Indemnity

indemnización
Meaning
security or protection against a loss or other financial burden; compensation for damage or loss
Example
The insurance company provided full indemnity for the damages caused by the flood.
La compañía de seguros proporcionó indemnización completa por los daños causados por la inundación.
C1 verb/noun /ˈθrɒt.əl/

throttle

ahogar/controlar velocidad
Meaning
To choke or strangle; to control the flow of fuel or power in an engine.
Example
The driver throttled the engine to slow down the car.
El conductor redujo la velocidad del motor para frenar el coche.
C1 adjective /bəˈroʊk/

baroque

estilo barroco
Meaning
relating to a highly ornate and extravagant style of art, architecture, or music from the 17th and early 18th centuries; excessively elaborate or complex
Example
The church was decorated in a baroque style with intricate details.
La iglesia estaba decorada con un estilo barroco con detalles intrincados.
C1 noun /noʊˈteɪʃən/

notation

notación
Meaning
A system of symbols or signs used to represent information, especially in mathematics or music.
Example
The teacher explained the notation used in the algebra equations.
El profesor explicó la notación utilizada en las ecuaciones algebraicas.
C1 verb /ˌʌndəˈreɪt/

underrate

subestimar
Meaning
to fail to recognize the full value or importance of something or someone
Example
Many people underrate the benefits of regular exercise.
Muchas personas subestiman los beneficios del ejercicio regular.
C1 noun ˈmetəl kənˌtæməˈneɪʃən

metal contamination

contaminación por metales
Meaning
The presence of toxic metals in the environment that pose health and environmental risks.
Example
Metal contamination poses severe health risks.
La contaminación por metales representa graves riesgos para la salud.
C1 noun /ˈhɔːr.nət/

Hornet

avispa
Meaning
a large wasp that can sting and is often aggressive
Example
The hornet built its nest under the roof.
La avispa construyó su nido bajo el techo.
C1 adjective /ʌnˈsoʊld/

unsold

no vendido
Meaning
not sold; remaining without a buyer
Example
The unsold goods were returned to the warehouse.
Los productos no vendidos fueron devueltos al almacén.
C1 noun /ˈkɒnsjʊlət/

consulate

consulado
Meaning
the building or office where a consul works
Example
He went to the consulate to renew his visa.
Él fue al consulado para renovar su visa.
C1 noun /ˈskævɪndʒər/

scavenger

carroñero / recolector de basura
Meaning
an animal or person that feeds on dead or discarded material
Example
Vultures are natural scavengers that clean up the environment.
Los buitres son escavengers naturales que limpian el medio ambiente.