Long-term memory
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B2 noun ˈlɒŋ tɜːm ˈmɛm.ər.i

Long-term memory

memoria a largo plazo
Meaning
Such memory that remains stored in the brain for a long time
Example
Repeated practice helps transfer information into long-term memory.
La práctica repetida ayuda a transferir información a la memoria a largo plazo.
C1 noun /ˌkɒn.əˈsɜːr/

connoisseur

experto
Meaning
an expert judge in matters of taste, especially in food, art, or wine
Example
She is a true connoisseur of fine art.
Ella es una verdadera experta en arte fino.
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.
B1 verb /ˈfraɪtən/

frighten

asustar
Meaning
to cause fear or alarm in someone
Example
The loud noise frightened the child.
El ruido fuerte asustó al niño.
B2 verb, noun /stɔːl/

stall

detener, puesto pequeño
Meaning
to stop or cause to stop temporarily; a small shop or stand
Example
The car stalled on the way to the office.
El coche se detuvo en el camino hacia la oficina.
C1 adjective /ˈrʌs.tɪk/

Rustic

sencillo y no sofisticado; relacionado con áreas rurales
Meaning
simple and unsophisticated; relating to rural areas
Example
The rustic cottage had wooden beams and a thatched roof.
La cabaña rústica tenía vigas de madera y un techo de paja.
C2 noun /prəˈpɪŋkwɪti/

propinquity

proximidad
Meaning
the state of being close to someone or something; proximity
Example
The propinquity of their houses made them close friends.
La proximidad de sus casas los hizo amigos cercanos.
C1 noun ˈstræt.ə.sfɪər

stratosphere

estratósfera
Meaning
The layer of the earth's atmosphere above the troposphere, extending to about 50 km above the earth's surface.
Example
The stratosphere provides a unique environment.
La estratósfera proporciona un entorno único.
B1 verb /ɪnˈvɛnt/

invent

inventar
Meaning
to create or design something that has not existed before
Example
Thomas Edison invented the electric bulb.
Thomas Edison inventó la bombilla eléctrica.
C2 verb /ɪkˈstruːd/

extrude

extruir
Meaning
to force something out through a small opening; to shape by pushing material through a mold
Example
The factory extrudes plastic pipes using modern machines.
La fábrica extruye tubos de plástico utilizando máquinas modernas.
C2 verb /ˈmɒlɪfaɪ/

mollify

apaciguar
Meaning
To calm or soothe someone's anger or anxiety.
Example
The manager tried to mollify the angry customers with discounts.
El gerente trató de apaciguar a los clientes enojados con descuentos.
C2 verb /kwɒf/

quaff

beber de un trago
Meaning
to drink something heartily or in large gulps, especially an alcoholic drink
Example
He quaffed a mug of ale after the long day.
Él bebió de un trago una jarra de cerveza después del largo día.
B2 noun /ˌkɒrəˈspɒndənt/

correspondent

reportero
Meaning
A journalist who reports news from a particular place or on a particular subject.
Example
The foreign correspondent reported live from Paris.
El reportero extranjero informó en vivo desde París.
C1 verb /ɪmˈpiːd/

impede

impedir
Meaning
To obstruct or hinder the progress or development of something.
Example
Lack of funds can impede business growth.
La falta de fondos puede impedir el crecimiento empresarial.
C2 adjective /əˈkɜːrsɪd/

accursed

maldito
Meaning
Doomed, detestable, or under a curse.
Example
The villagers avoided the accursed house on the hill.
Los aldeanos evitaban la casa maldita en la colina.
C2 adjective /ˈsiːmi/

seamy

degradado, sórdido
Meaning
Morally degraded, unpleasant, or sordid.
Example
The novel reveals the seamy side of city life.
La novela revela el lado sórdido de la vida en la ciudad.
C2 adjective /ˈkɒndʒʊɡəl/

conjugal

conyugal
Meaning
relating to marriage or the relationship between husband and wife
Example
They enjoyed a long life of conjugal happiness.
Disfrutaron de una larga vida de felicidad conyugal.
B1 adverb /ˈfriːkwəntli/

Frequently

frecuentemente; regularmente; muchas veces
Meaning
often; regularly; many times
Example
She frequently visits her grandmother on weekends.
Ella visita a su abuela con frecuencia los fines de semana.
C1 noun /ˈtɪrəni/

tyranny

tiranía
Meaning
Cruel and oppressive government or rule by a tyrant.
Example
The people revolted against the tyranny of their ruler.
La gente se rebeló contra la tiranía de su gobernante.
C1 noun /ɪkˈstræv.ə.ɡəns/

Extravagance

gasto excesivo; derroche
Meaning
lack of restraint in spending money; excessive expense
Example
The wedding celebration was criticized for its unnecessary extravagance.
La celebración de la boda fue criticada por su extravagancia innecesaria.
B1 adjective /ˌʌnbɪˈliːvəbəl/

Unbelievable

increíble
Meaning
impossible to believe; extremely surprising or remarkable
Example
The magician's performance was absolutely unbelievable.
La actuación del mago fue absolutamente increíble.
A2 noun /ˈkɔːrnər/

corner

esquina
Meaning
the place where two edges or sides meet
Example
The store is just around the corner.
La tienda está justo en la esquina.
B2 noun ˈterɪtəri

territory

territorio
Meaning
An area of land under the jurisdiction of a ruler or state.
Example
The king expanded his territory.
El rey expandió su territorio.
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 /rɪˈmɪʃən/

remission

remisión
Meaning
A temporary or permanent decrease or disappearance of disease symptoms; forgiveness of sins or debts.
Example
The patient’s cancer is in remission after the treatment.
El cáncer del paciente está en remisión después del tratamiento.
C1 adjective ˈzɛləs

zealous

celoso
Meaning
Having or showing great energy or enthusiasm in pursuit of a cause or objective; fervent.
Example
The zealous volunteers worked tirelessly for the cause.
Los voluntarios celosos trabajaron incansablemente por la causa.
C2 noun /ˈliːdʒənəri/

legionary

soldado romano
Meaning
a soldier in the Roman army
Example
Each legionary carried a shield and a short sword.
Cada legionario llevaba un escudo y una espada corta.
A2 noun /ˈɪm.ɪdʒ/

Image

imagen; figura; representación
Meaning
a representation of the external form of a person or thing in art; a mental picture or impression
Example
The company worked hard to improve its public image after the scandal.
La empresa trabajó duro para mejorar su imagen pública después del escándalo.
C1 verb /ˈɪnstɪˌɡeɪt/

instigate

incitar
Meaning
To bring about or initiate an action, often something negative.
Example
He was accused of instigating the riot.
Fue acusado de incitar el motín.
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 noun /ɪkˌsperɪˈmɛnteɪʃən/

experimentation

experimentación
Meaning
The process of performing a scientific procedure to make a discovery, test a hypothesis, or demonstrate a known fact.
Example
Experimentation leads to groundbreaking products.
La experimentación conduce a productos innovadores.
C2 noun /prɪˈhɛnʃən/

prehension

acción de agarrar; la capacidad de sujetar algo
Meaning
the act of grasping or seizing; the ability to take hold of something
Example
Therapists assessed the patient's prehension during hand therapy.
Los terapeutas evaluaron la prehensión del paciente durante la terapia de manos.
B2 adjective /ˈpær.ə.lel/

Parallel

paralelo
Meaning
side by side and having the same distance continuously between them; similar or corresponding
Example
The two roads run parallel to each other for several miles.
Las dos carreteras corren paralelas una a la otra durante varias millas.
C1 adjective /ˈɡʌl.ə.bəl/

gullible

fácilmente engañado
Meaning
Easily deceived or tricked.
Example
She was so gullible that she believed every rumor.
Ella era tan crédula que creía cada rumor.
C1 noun /ˈmɛm.wɑːr/

memoir

memoria
Meaning
A historical account or autobiography written from personal experience.
Example
The author’s memoir details her journey through hardship and success.
La memoria de la autora detalla su viaje a través de dificultades y éxitos.
C2 verb /ˈvɪlɪfaɪ/

vilify

felicidad
Meaning
to speak or write about someone in an abusive or disparaging manner
Example
The politician was vilified in the media for his controversial remarks.
Ella no pudo ocultar su felicidad cuando recibió el premio.
B2 adjective /əbˈsɜːrd/

absurd

absurdo, irracional
Meaning
wildly unreasonable, illogical, or inappropriate
Example
It is absurd to think that the earth is flat.
Es absurdo pensar que la Tierra es plana.
C2 noun /ˈfriːˌmeɪsən/

freemason

francmasón miembro
Meaning
A member of an international fraternity known as Freemasonry, focused on moral and spiritual values.
Example
His grandfather was a respected freemason in the community.
Su abuelo era un respetado francmasón en la comunidad.
C1 noun /slæɡ/

slag

escoria
Meaning
Stony waste matter separated from metals during the smelting process.
Example
The factory dumped the slag near the river.
La fábrica arrojó la escoria cerca del río.
A1 adjective /ˈjeloʊ/

Yellow

amarillo; cobarde
Meaning
having the color of the sun or gold; cowardly
Example
The yellow flowers bloomed in spring.
Las flores amarillas florecieron en primavera.
C1 noun moʊst ˈvʌlnərəbəl ˈneɪʃən

most vulnerable nation

nación más vulnerable
Meaning
A country that is highly exposed to risks and lacks adequate protection or resilience.
Example
Bangladesh is one of the most vulnerable nations to climate change.
Bangladesh es uno de los países más vulnerables al cambio climático.
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.
C2 noun /ˌoʊpəˈlɛsəns/

opalescence

opalescencia
Meaning
a milky or pearly appearance of a surface like that of an opal
Example
The pearl had a gentle opalescence under the light.
La perla tenía una suave opalescencia bajo la luz.
B2 noun /ˈfaɪ.bər/

fibre

fibra
Meaning
A thread or filament from which a vegetable tissue, mineral substance, or textile is formed; dietary material that aids digestion.
Example
Eating foods rich in fibre can improve your digestion.
Comer alimentos ricos en fibra puede mejorar tu digestión.
B2 noun səˈsteɪnəbl dɪˈvɛləpmənt

Sustainable Development

desarrollo sostenible
Meaning
Development that meets present needs without compromising the ability of future generations to meet their own needs.
Example
Eco-tourism contributes to sustainable development in local communities.
El ecoturismo contribuye al desarrollo sostenible en las comunidades locales.
A1 noun /ˈsɪstər/

sister

hermana
Meaning
a female sibling; a girl or woman in relation to other children of her parents
Example
My sister is coming to visit us next week.
Mi hermana vendrá a visitarnos la próxima semana.
B2 noun /ˈsɛnətər/

senator

senador
Meaning
a member of a senate, especially in a legislative body
Example
The senator spoke passionately about environmental policies.
El senador habló con pasión sobre las políticas ambientales.
C1 verb /ˈræŋɡl̩/

wrangle

discutir
Meaning
to argue or dispute noisily or angrily
Example
The two neighbors wrangled over the property line for hours.
Los dos vecinos discutieron durante horas sobre la línea de propiedad.
C1 noun /mæɡˈnɪfɪsəns/

magnificence

magnificencia
Meaning
splendor, grandeur, or impressive beauty
Example
The magnificence of the palace left everyone speechless.
La magnificencia del palacio dejó a todos sin palabras.
B2 noun /fɪɡ/

Fig

higo
Meaning
a soft sweet fruit that is purple or green on the outside and has many small seeds
Example
The fig tree in our backyard produces delicious fruits every summer.
El árbol de higo en nuestro jardín produce frutas deliciosas cada verano.
C1 adjective /dɪˈbɪl.ɪ.teɪ.tɪŋ/

debilitating

debilitante
Meaning
Making someone or something weak and infirm.
Example
The disease had a debilitating effect on his health.
La enfermedad tuvo un efecto debilitante en su salud.
B2 noun /ˈmɔːl.tə/

Malta

naranja sanguina
Meaning
a sweet citrus fruit similar to orange, also known as blood orange or sweet orange
Example
Malta is a popular citrus fruit in Bangladesh known for its sweet taste and high vitamin C content.
Malta es una fruta cítrica popular en Bangladesh, conocida por su sabor dulce y su alto contenido de vitamina C.
B2 adjective /prəˈfɪʃ.ənt/

proficient

competente
Meaning
Competent or skilled in doing or using something; having great knowledge or experience.
Example
She is highly proficient in multiple languages.
Ella es altamente competente en varios idiomas.
B2 noun /ˈfrɛʃnəs/

freshness

frescura
Meaning
The quality of being new, clean, and full of energy.
Example
The freshness of the morning air made everyone feel alive.
La frescura del aire de la mañana hizo que todos se sintieran vivos.
B1 noun ˈsɛʃənz

sessions

sesiones, reuniones, período
Meaning
A meeting of an official body, especially a court of law, to conduct its business; a period devoted to a particular activity.
Example
The sessions lasted for three hours.
Las sesiones duraron tres horas.
C2 noun /ˌɛfləˈrɛsəns/

efflorescence

floración
Meaning
the process of flowering or reaching an optimal stage of development
Example
The garden was at the peak of its efflorescence in spring.
El jardín estaba en su pico de floración en primavera.
A1 adjective /dʒʌst/

Just

justo; recto; apropiado
Meaning
fair; righteous; morally right; appropriate
Example
The judge made a just decision in the case.
El juez tomó una decisión justa en el caso.
C1 noun /ˈpɪk.æks/

Pick-axe

pico
Meaning
a tool with a heavy metal head and long handle used for breaking up hard ground or rock
Example
The miner used a pick-axe to break through the rocky surface.
El minero usó un pico para romper la superficie rocosa.
B2 adjective, noun /ˈɛəriəl/

aerial

aéreo / antena
Meaning
As an adjective: existing or happening in the air. As a noun: an antenna for receiving radio or television signals.
Example
The pilot performed an amazing aerial maneuver.
El piloto realizó una increíble maniobra aérea.
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.
B2 noun /ˈɛdʒuˌkeɪtər/

educator

educador
Meaning
a person who provides education; a teacher or instructor
Example
She is a dedicated educator who inspires her students every day.
Ella es una educadora dedicada que inspira a sus estudiantes todos los días.
A2 verb /oʊˈbeɪ/

obey

obedecer
Meaning
to follow orders or instructions; to comply with rules
Example
Children should obey their parents and teachers.
Los niños deben obedecer a sus padres y maestros.
C1 adjective /ˌaʊtˈspoʊkən/

Outspoken

franco
Meaning
frank; speaking directly
Example
She is known for being outspoken about social issues.
Es conocida por ser franca sobre los problemas sociales.
C2 noun /əˈpɒfəsɪs/

apophasis

apofasis
Meaning
A rhetorical device where the speaker brings up a subject by denying it or pretending to pass over it.
Example
The politician used apophasis by saying, 'I won’t even mention my opponent’s scandals.'
El político usó la apofasis al decir: 'Ni siquiera mencionaré los escándalos de mi oponente'.
B2 verb /kəmˈpoʊz/

compose

componer
Meaning
to create music or writing; to make up; to calm oneself
Example
She composes beautiful songs.
Ella compone hermosas canciones.
B2 verb /soʊ/

sow

sembrar
Meaning
to plant seeds in the ground; to scatter seeds for growing
Example
The farmer will sow wheat seeds in the field tomorrow.
El agricultor sembrará semillas de trigo en el campo mañana.
C1 adjective /ˈriːɡəl/

regal

real
Meaning
Resembling or fit for a king; majestic or royal.
Example
The queen entered the hall with a regal presence.
La reina entró al salón con una presencia real.
C2 adjective /kənˈfɔːrməbl/

conformable

conformable
Meaning
Capable of being adapted or consistent with something; compliant.
Example
His actions were conformable to the rules of the institution.
Sus acciones fueron conformables a las reglas de la institución.
B2 noun /sɪɡˈnɪf.ɪ.kəns/

Significance

significado
Meaning
the quality of being worthy of attention; importance
Example
The discovery has great significance for medical research.
El descubrimiento tiene gran importancia para la investigación médica.
B1 noun /ˈsɜːr.kəmˌsˌtæn.sɪz/

Circumstances

circunstancias
Meaning
the conditions that affect a situation, action, or event; facts or conditions connected with or relevant to an event
Example
Under normal circumstances, she would have arrived by now.
Bajo circunstancias normales, ella habría llegado ya.
B1 adverb /pɑːrˈtɪkjʊləli/

particularly

particularmente
Meaning
to a higher degree than is usual or expected
Example
She is particularly fond of Italian food.
Ella es particularmente aficionada a la comida italiana.
B2 noun /ˈskʌlp.tər/

Sculptor

escultor
Meaning
an artist who creates sculptures by carving, modeling, or shaping materials
Example
The sculptor spent months creating a beautiful marble statue.
El escultor pasó meses creando una hermosa estatua de mármol.
B2 verb /əˈkweɪnt/

acquaint

familiarizar
Meaning
to make someone familiar with something; to inform or introduce
Example
Please acquaint yourself with the safety guidelines before operating the machine.
Por favor, familiarícese con las pautas de seguridad antes de operar la máquina.
C1 verb /kənˈkɜːr/

concur

concurrir
Meaning
To agree with someone or something.
Example
I concur with your opinion on this matter.
Yo concuerdo con tu opinión sobre este asunto.
B2 adjective /ˈθɔːtfəl/

thoughtful

reflexivo
Meaning
showing careful consideration or attention
Example
She gave a thoughtful response to every question asked.
Ella dio una respuesta reflexiva a cada pregunta que se le hizo.
C1 adjective /ˈɪmpətənt/

impotent

impotente
Meaning
Lacking power, ability, or strength to take effective action.
Example
The citizens felt impotent against the corrupt system.
Los ciudadanos se sintieron impotentes contra el sistema corrupto.
B2 verb /skæn/

scan

felicidad
Meaning
To look at something carefully or quickly; to digitally copy or capture an image or document.
Example
She scanned the document before sending it by email.
Ella no pudo ocultar su felicidad cuando recibió el premio.
C2 noun /ˈpɒliˌɑːrki/

polyarchy

poliarquía
Meaning
government by many people
Example
Polyarchy allows multiple parties to share power.
La poliarquía permite que varios partidos compartan el poder.
C2 noun /pruːd/

prude

persona excesivamente pudorosa
Meaning
A person who is easily shocked by matters relating to sex or nudity; someone overly modest.
Example
He was called a prude for blushing at the movie scenes.
Lo llamaron un prudente por sonrojarse con las escenas de la película.
B1 noun /fæts/

fats

grasas
Meaning
Essential macronutrients that provide energy, support cell growth, and protect organs while helping absorb vitamins.
Example
Healthy fats from nuts and avocados support brain function.
Las grasas saludables de los frutos secos y los aguacates apoyan la función cerebral.
C1 adjective /ˈveɪɡrənt/

Vagrant

vagabundo; sin hogar
Meaning
wandering aimlessly; having no settled home
Example
The vagrant man was asking for food near the station.
El hombre vagabundo estaba pidiendo comida cerca de la estación.
C1 adjective ɪnˈsaɪ.sɪv

incisive

incisivo
Meaning
Intelligently analytical and clear-thinking; showing clear thought and good understanding of what is important.
Example
His incisive comments revealed the core issues.
Sus comentarios incisivos revelaron los problemas clave.
B1 adverb /ˈfriːli/

Freely

libremente; sin restricciones;
Meaning
without restriction; openly; willingly
Example
She spoke freely about her experiences during the interview.
Ella habló libremente sobre sus experiencias durante la entrevista.
C1 verb /ˌɪn.trəˈspekt/

introspect

introspectar
Meaning
To examine one's own thoughts, feelings, or mental state.
Example
He often introspects before making important decisions.
Él a menudo se introspecta antes de tomar decisiones importantes.
B2 noun /ˈbɒdiɡɑːrd/

bodyguard

guardaespaldas
Meaning
a person employed to protect someone from harm
Example
The celebrity arrived with her bodyguard.
La celebridad llegó con su guardaespaldas.
C1 adjective /dɪˈspɒndənt/

despondent

desalentado
Meaning
feeling or showing deep hopelessness or discouragement
Example
She felt despondent after losing her job.
Ella se sintió desalentada después de perder su trabajo.
C1 noun /ˌæn.əˈnɪm.ə.ti/

anonymity

anonimato
Meaning
The state of being anonymous; having one's identity kept secret or unknown.
Example
Online anonymity protects users from cyber threats.
La anonimidad en línea protege a los usuarios de amenazas cibernéticas.
B1 noun /mæsk/

Mask

máscara
Meaning
covering for the face or head; disguise or protection
Example
She wore a mask to protect herself from dust.
Ella llevaba una máscara para protegerse del polvo.
C1 verb /kənˈspaɪər/

conspire

conspirar
Meaning
to secretly plan with others to do something harmful or illegal
Example
They conspired to overthrow the government.
Ellos conspiraron para derrocar al gobierno.
C2 adjective /spraɪ/

spry

ágil
Meaning
active and lively, especially in old age
Example
The spry grandmother surprised everyone with her quick dance steps.
La abuela ágil sorprendió a todos con sus rápidos pasos de baile.
C1 noun /məˈræŋ/

meringue

merengue (cobertura para postres)
Meaning
A light dessert topping made from whipped egg whites and sugar.
Example
She decorated the pie with a fluffy meringue topping.
Ella decoró la tarta con una capa de merengue esponjoso.
C2 noun /ˌproʊɪˈbɪʃənɪst/

prohibitionist

prohibicionista
Meaning
A person who supports or advocates prohibition, especially of alcohol.
Example
The prohibitionist campaigned against the sale of liquor in the town.
El prohibicionista hizo campaña contra la venta de licor en la ciudad.
B1 noun /ˈtʃɪl.i/

Chilly/Chilli

frío; pimiento picante;
Meaning
noticeably cold; a hot-tasting pod of a variety of capsicum, used as a spice
Example
The chef added red chilli to make the curry spicier.
El chef añadió chile rojo para hacer el curry más picante.
C2 noun /ʃiːt fɪʃ/

Sheat-fish

siluro
Meaning
A large freshwater catfish with a broad flat head and long barbels
Example
The sheat-fish is one of the largest freshwater fish in South Asia.
El siluro es uno de los peces de agua dulce más grandes del sur de Asia.
B2 noun /ˈraɪfəl/

Rifle

rifle
Meaning
a gun with a long barrel that is fired from the shoulder
Example
The soldier carried a rifle during the mission.
El soldado llevaba un rifle durante la misión.
A2 noun /ˈfiː.lɪŋ/

Feeling

sensación; sentimiento; emoción
Meaning
an emotional state or reaction; the capacity to experience physical sensations
Example
She had a strange feeling that something important was about to happen.
Ella tenía una extraña sensación de que algo importante iba a suceder.
C1 noun /ˈɪnflʌks/

influx

afluencia
Meaning
A large arrival or flow of people or things.
Example
The city experienced an influx of tourists during the festival.
La ciudad experimentó una afluencia de turistas durante el festival.
C2 adjective /ˌʌnsɛrəˈmoʊniəs/

unceremonious

sin ceremonias/rudo
Meaning
Done without formality or courtesy; abrupt or rude.
Example
He made an unceremonious exit from the party.
Él hizo una salida sin ceremonias de la fiesta.
C2 noun /ˈproʊtoʊˌmɑːrtɚ/

protomartyr

primer mártir
Meaning
The first martyr in a cause or religion, often referring to the first Christian martyr.
Example
St. Stephen is known as the protomartyr of Christianity.
San Esteban es conocido como el protomártir del cristianismo.
C1 adjective /ˈɒptɪk/

optic

óptico
Meaning
Relating to the eye or vision.
Example
The optic nerve carries signals from the eye to the brain.
El nervio óptico lleva señales desde el ojo al cerebro.
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 noun /ˈiːɡoʊˌɪzəm/

egoism

egoísmo
Meaning
An ethical theory that treats self-interest as the foundation of morality; also, excessive preoccupation with oneself.
Example
His decisions were often driven by egoism rather than concern for others.
Sus decisiones a menudo eran impulsadas por el egoísmo en lugar de por la preocupación por los demás.
C1 verb /kənˈsaɪn/

consign

consignar
Meaning
to deliver something to a person or place, often for selling or safekeeping
Example
He consigned the package to the shipping company.
Él consignó el paquete a la compañía de envíos.
C2 noun /ˈmɔːreɪz/

mores

costumbres
Meaning
the essential or characteristic customs and conventions of a community
Example
Social mores often dictate how people behave in public.
Las costumbres sociales a menudo dictan cómo se comportan las personas en público.
C2 noun /ˈfɪl.ə.dʒɪ.nɪst/

philogynist

persona que ama o admira a las mujeres
Meaning
a person who loves or admires women
Example
As a known philogynist, he advocated for women's education.
Como un conocido filoginista, él defendió la educación de las mujeres.
C1 adjective /ˈkɒɡ.nɪ.zənt/

cognizant

consciente
Meaning
Having knowledge or being aware of something.
Example
He was cognizant of the risks before starting the project.
Él estaba consciente de los riesgos antes de comenzar el proyecto.
B2 adverb /səˈfɪʃəntli/

sufficiently

suficientemente
Meaning
to an adequate degree or extent
Example
She studied sufficiently to pass the exam.
Ella estudió suficientemente para aprobar el examen.
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.
C2 noun /bəˈlɛəroʊ/

bolero

bolero (un baile español o una chaqueta corta abierta al frente)
Meaning
A Spanish dance in slow triple time, or a short jacket open at the front.
Example
The dancers performed a passionate bolero at the festival.
Los bailarines realizaron un bolero apasionado en el festival.
B2 noun /ˈdʌbəl ˈdekər/

Double decker

autobús de dos pisos
Meaning
a bus with two levels or floors for passengers
Example
The red double decker bus is a famous symbol of London.
El autobús de dos pisos rojo es un símbolo famoso de Londres.
C1 adjective /ɪmˈpɛtʃ.u.əs/

impetuous

impulsivo
Meaning
Acting or done quickly and without thought or care; impulsive.
Example
His impetuous decision led to unexpected consequences.
Su decisión impulsiva condujo a consecuencias inesperadas.
B1 adjective /ʌnˈfɔːr.tʃən.ət/

Unfortunate

desafortunado; lamentable
Meaning
having bad luck; regrettable or unlucky
Example
It was unfortunate that the meeting was cancelled at the last minute.
Fue desafortunado que la reunión se cancelara en el último minuto.
B2 noun ˌkʌl.tɪˈveɪ.ʃən

cultivation

cultivo
Meaning
The practice of preparing and using land for crops or gardening; the action of improving or developing something.
Example
The cultivation of organic crops has increased worldwide.
El cultivo de cultivos orgánicos ha aumentado en todo el mundo.
A2 adjective /ʌnˈlʌki/

Unlucky

desafortunado; de mala suerte
Meaning
having bad luck; unfortunate
Example
He was unlucky to miss the winning shot.
Él tuvo mala suerte al perder el tiro ganador.
C2 noun /ˌdɪvɪˈneɪʃən/

divination

adivinación
Meaning
the practice of seeking knowledge of the future or the unknown by supernatural means
Example
Ancient people often relied on divination to guide important decisions.
Las personas antiguas a menudo dependían de la adivinación para tomar decisiones importantes.
C1 verb /ˈflɪk.ər/

flicker

parpadear
Meaning
to shine unsteadily or waver between light and dark
Example
The candle flickered in the wind.
La vela parpadeaba en el viento.
A2 adjective /ˈlʌki/

lucky

afortunado
Meaning
having good fortune or favorable circumstances
Example
She felt lucky to have such supportive friends.
Ella se sintió afortunada de tener amigos tan solidarios.
B2 verb /kɜːrb/

curb

frenar / controlar
Meaning
to restrain, control, or limit something
Example
The government took steps to curb inflation.
El gobierno tomó medidas para frenar la inflación.
B2 verb /straɪd/

stride

caminar con pasos largos y decisivos; hacer progresos
Meaning
to walk with long, decisive steps; to make progress
Example
She strode confidently across the stage.
Ella caminó con confianza por el escenario.
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 ˈluː.sɪd

lucid

claro y fácil de entender
Meaning
Clear and easily understandable thoughts or explanations.
Example
His explanation was so lucid that everyone understood it.
Su explicación era tan clara que todos la entendieron.