tugboat
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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 verb /ɪmˈbɛd/

imbed

incrustar
Meaning
To fix firmly or deeply in a surrounding mass.
Example
The journalist imbedded himself with the troops to report firsthand.
El periodista se incrustó con las tropas para reportar de primera mano.
C1 noun /əbˈzɜːrvətɔːri/

observatory

observatorio
Meaning
A building equipped for observing astronomical or meteorological events.
Example
The observatory is open to the public on weekends.
El observatorio está abierto al público los fines de semana.
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 noun /ˈiːdɪkt/

edict

edicto
Meaning
An official order, proclamation, or decree issued by an authority.
Example
The king issued an edict banning smoking in public places.
El rey emitió un edicto prohibiendo fumar en lugares públicos.
C1 verb ˈɔː.kɪ.streɪ.tɪd

orchestrated

orquestado
Meaning
Planned or coordinated carefully and deliberately.
Example
The attacks were orchestrated with precision.
Los ataques fueron orquestados con precisión.
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 noun /rɪˈmɛmbrəns/

remembrance

recuerdo
Meaning
the act of remembering or honoring someone or something
Example
A service was held in remembrance of the fallen soldiers.
Se celebró un servicio en recuerdo de los soldados caídos.
C1 noun /ˈsɔːjər/

Sawyer

aserrador
Meaning
a person who saws wood, especially as an occupation
Example
The skilled sawyer cut the logs into planks.
El hábil aserrador cortó los troncos en tablones.
C1 adjective /ˈneɡ.lɪ.dʒənt/

Negligent

negligente
Meaning
failing to take proper care; careless; showing lack of attention
Example
The negligent driver caused a serious accident.
El conductor negligente causó un accidente grave.
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 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 /ˈvɜːrtɪˌɡoʊ/

vertigo

felicidad
Meaning
A sensation of spinning or dizziness, often caused by problems in the inner ear or brain.
Example
She felt a sudden vertigo when she looked down from the tall building.
Ella no pudo ocultar su felicidad cuando recibió el premio.
C1 adjective /ˈʃeɪm.ləs/

Shameless

desvergonzado
Meaning
having no shame; bold and rude; impudent
Example
The shameless politician refused to apologize for his mistakes.
El político desvergonzado se negó a disculparse por sus errores.
C1 noun /ɪˌluːmɪˈneɪʃən/

illumination

iluminación
Meaning
the act of lighting something or making something clear
Example
The street was filled with bright illumination from the lamps.
La calle estaba llena de una iluminacion brillante proveniente de las lamparas.
C1 noun /ˈmɔːr.nər/

Mourner

persona que asiste a un funeral
Meaning
a person who attends a funeral or shows grief for someone who has died
Example
The mourners gathered at the cemetery to pay their respects.
Los dolientes se reunieron en el cementerio para rendir sus respetos.
C1 verb /ˈhæɡəl/

haggle

regatear
Meaning
to argue about the price; to bargain persistently
Example
They haggled over the price for an hour.
Estuvieron regateando el precio durante una hora.
C1 noun /tʃɪt/

Chit

nota, billete, recibo
Meaning
a short note, typically a brief informal letter; a voucher for a sum owed
Example
She left a chit on the table asking him to call her back.
Ella dejó un chit en la mesa pidiéndole que la llamara de vuelta.
C1 noun /kwɑːm/

qualm

duda
Meaning
a feeling of doubt, worry, or fear about something
Example
She had no qualm about speaking her mind.
Ella no tuvo duda en decir lo que pensaba.
C1 noun /ˈiːɡətɪst/

egotist

ególatra
Meaning
A person who is excessively self-centered or talks too much about themselves.
Example
The egotist dominated the conversation by talking only about his own achievements.
El ególatra dominó la conversación hablando solo de sus propios logros.
C1 adjective /rɪˈmiːdiəl/

Remedial

correctivo; remedial; curativo;
Meaning
intended as a remedy; corrective; providing a cure;
Example
The students need remedial classes to improve their math skills.
Los estudiantes necesitan clases remediales para mejorar sus habilidades en matemáticas.
C1 noun /vɛnˈdɛtə/

vendetta

venganza
Meaning
a prolonged bitter quarrel or campaign of revenge
Example
The two families were caught in a bitter vendetta for generations.
Las dos familias estuvieron atrapadas en una amarga venganza durante generaciones.
C1 noun /ˈɡlɒs.ər.i/

Glossary

glosario
Meaning
an alphabetical list of terms in a particular domain of knowledge with explanations; a brief dictionary
Example
The textbook includes a helpful glossary at the end to define technical terms.
El libro de texto incluye un glosario útil al final para definir términos técnicos.
C1 adjective /ˈfɑːð.ər.ləs/

fatherless

huérfano de padre
Meaning
without a father
Example
The fatherless child relied on the support of his community.
El niño huérfano de padre dependía del apoyo de su comunidad.
C1 noun /ˌrɛtrɪˈbjuːʃən/

retribution

venganza, castigo
Meaning
punishment inflicted as vengeance for a wrong or crime
Example
The villagers demanded retribution for the crime committed.
Los aldeanos exigieron venganza por el crimen cometido.
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 ɪˈpɪf.ə.ni

epiphany

revelación repentina o insight
Meaning
A moment of sudden revelation or insight.
Example
He had an epiphany about his true purpose in life.
Él tuvo una epifanía sobre su verdadero propósito en la vida.
C1 adjective /ˈstɛlər/

stellar

excepcional
Meaning
Relating to stars; outstanding or excellent.
Example
She gave a stellar performance in the play.
Ella dio una actuación excepcional en la obra.
C1 adjective /ˈbaʊn.tɪ.fəl/

bountiful

abundante / generoso
Meaning
Large in quantity; abundant; generous in giving.
Example
The farmer was grateful for the bountiful harvest.
El agricultor estaba agradecido por la abundante cosecha.
C1 /splɪnt/

splint

férula
Meaning
A rigid device used to support and immobilize a broken or injured body part.
Example
The doctor applied a splint to stabilize the patient's broken arm.
El doctor aplicó una férula para estabilizar el brazo roto del paciente.
C1 noun /ˈdʒʌɡ.lər/

Juggler

malabarista
Meaning
a person who skillfully throws and catches objects as entertainment
Example
The juggler entertained the crowd with his amazing ball tricks.
El malabarista entretuvo a la multitud con sus increibles trucos con pelotas.
C1 noun /ˈʃeɪvɪŋ/

shaving

afeitado
Meaning
the act of removing hair with a razor; a thin strip or piece shaved from something
Example
He bought a new cream for shaving.
Compró una nueva crema para afeitarse.
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.
C1 verb /ˈtɪŋkər/

tinker

ajustar
Meaning
to make small adjustments or repairs to something, often experimentally or imperfectly
Example
He likes to tinker with old radios in his garage.
A él le gusta ajustar radios viejos en su garaje.
C1 noun /ˈʃɜːrbət/

sherbet

sorbete
Meaning
a sweet flavored drink or a frozen dessert made from sweetened fruit juice
Example
On hot days, she enjoys a glass of lemon sherbet.
En los días calurosos, disfruta de un vaso de sorbete de limón.
C1 adjective /ɪnˈfɜːm/

infirm

débil
Meaning
Weak, especially due to old age or illness.
Example
The infirm old man needed assistance to walk.
El anciano débil necesitaba ayuda para caminar.
C1 verb /dɪˈraɪd/

deride

ridiculizar
Meaning
to mock or ridicule someone or something
Example
The critics derided the new movie for its poor script.
Los críticos ridiculizaron la nueva película por su mal guion.
C1 adjective, noun /ˈmɑːrʃən/

martian

marciano
Meaning
Related to the planet Mars; or an imaginary being from Mars.
Example
The movie showed a Martian visiting Earth.
La película mostró un marciano visitando la Tierra.
C1 adverb /ˌwɛr.əˈpɒn/

whereupon

inmediatamente después
Meaning
Immediately after which; as a result of which.
Example
He confessed his mistake, whereupon she forgave him.
Él confesó su error, inmediatamente después ella lo perdonó.
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 adjective sɪˈlɛstʃəl

celestial

celestial
Meaning
Positioned in or relating to the sky, or outer space as observed in astronomy.
Example
The celestial bodies in the sky were clearly visible last night.
Los cuerpos celestes en el cielo eran claramente visibles la noche pasada.
C1 verb /daɪˈvɛst/

divest

desinvertir
Meaning
to strip away possessions, rights, or assets; to rid oneself of
Example
The company decided to divest its unprofitable division.
La empresa decidió desinvertir su división no rentable.
C1 verb /ˌɪnstɪˈtjuːʃənəlaɪz/

institutionalize

institucionalizar
Meaning
to establish something as a formal institution, custom, or practice
Example
The government seeks to institutionalize environmental protection.
El gobierno busca institucionalizar la protección ambiental.
C1 verb /ˌʌndərˈvæljuː/

undervalue

devaluar
Meaning
To assign too low a value or importance to something or someone.
Example
She felt that her boss consistently undervalued her contributions.
Ella sintió que su jefe constantemente no valoraba sus contribuciones.
C1 adjective /ˈswoʊlən/

swollen

hinchado
Meaning
Enlarged or puffed up, usually due to injury, inflammation, or fluid accumulation
Example
Her ankle was swollen after she twisted it during the hike.
Su tobillo estaba hinchado después de torcerlo durante la caminata.
C1 noun ˈsʌs.tɪ.nəns

Sustenance

sustento o alimento
Meaning
Food or support necessary for sustaining life
Example
Water is essential for human sustenance.
El agua es esencial para la sustentación humana.
C1 adjective /ˌtaɪpəˈɡræfɪkəl/

typographical

tipográfico
Meaning
relating to the style, arrangement, or appearance of printed text
Example
There was a typographical error in the book.
Había un error tipográfico en el libro.
C1 noun ˌɪnˈsaɪtfʊlnɪs

insightfulness

perspicacia, capacidad de análisis
Meaning
The capacity to gain an accurate and deep intuitive understanding of a person or thing.
Example
His insightfulness helped solve the complex problem.
Su perspicacia ayudó a resolver el problema complejo.
C1 adjective /ˈmɑːr.dʒɪ.nəl/

Marginal

marginal; mínimo; leve
Meaning
relating to or situated at the edge; minimal; slight
Example
The marginal improvement in sales was barely noticeable.
La mejora marginal en las ventas fue apenas notable.
C1 noun /ˌtɛrəˈdæktɪl/

pterodactyl

reptil volador extinto
Meaning
An extinct flying reptile of the Jurassic period, with a long slender head and wings formed by a membrane stretching along the body.
Example
The museum displayed a fossil of a giant pterodactyl.
El museo exhibió un fósil de un pterodáctilo gigante.
C1 adjective /səˈriːn/

serene

sereno y pacífico
Meaning
Calm, peaceful, and untroubled; tranquil.
Example
The lake had a serene and peaceful atmosphere.
El lago tenía una atmósfera serena y pacífica.
C1 noun ˌrev.əˈluː.ʃən.ər.i ɪˈnɪʃ.ə.tɪv

revolutionary initiative

iniciativa revolucionaria
Meaning
A groundbreaking action or plan that brings about significant change or transformation.
Example
The revolutionary initiative promotes sustainable energy.
La iniciativa revolucionaria promueve la energía sostenible.
C1 verb /ˈpɛdəl/

peddle

vender
Meaning
To sell goods, often by going from place to place; sometimes used negatively to mean promoting an idea or product in a pushy way.
Example
Street vendors peddle handmade jewelry to tourists.
Los vendedores ambulantes venden joyas hechas a mano a los turistas.
C1 noun /ˈrɪɡər/

rigor

rigor
Meaning
strictness, severity, or demanding conditions
Example
The training was carried out with great rigor.
El entrenamiento se llevó a cabo con gran rigor.
C1 adjective /ˈstrætɪfaɪd/

stratified

estratificado
Meaning
arranged or classified in layers or strata
Example
Society in the past was highly stratified based on class and wealth.
La sociedad en el pasado estaba altamente estratificada según la clase y la riqueza.
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 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 adjective /ˈsɪlkən/

Silken

de seda; suave; brillante;
Meaning
made of silk; smooth and soft like silk
Example
She wore a beautiful silken dress to the party.
Ella llevaba un hermoso vestido de seda a la fiesta.
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 /ˈmeɪ.triˌɑːrk/

matriarch

matriarca
Meaning
A woman who is the head of a family or community.
Example
The matriarch of the family made all important decisions.
La matriarca de la familia tomó todas las decisiones importantes.
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 noun /ˈɪnlɛt/

inlet

entrada
Meaning
A small arm of the sea, a lake, or a river; an opening or passage for entry.
Example
The boat entered a narrow inlet along the coast.
El bote entró en una entrada estrecha a lo largo de la costa.
C1 noun /əbˈstrʌkʃən/

obstruction

obstáculo
Meaning
Something that blocks or gets in the way; the action of obstructing.
Example
There was an obstruction on the railway track.
Había un obstáculo en la vía del tren.
C1 noun /ræmˈbuːtən/

Rambutan

rambután
Meaning
a tropical fruit with red spiky skin and white translucent sweet flesh similar to litchi
Example
The rambutan looks scary with its hairy skin but tastes very sweet inside.
El rambutan se ve aterrador con su piel peluda, pero tiene un sabor muy dulce por dentro.
C1 adjective /ˈfɒnɪk/

phonic

fonético
Meaning
relating to speech sounds or their production; connected to phonics
Example
Children learn phonic rules to read new words accurately.
Los niños aprenden las reglas fonéticas para leer nuevas palabras con precisión.
C1 verb /dɪˈpriːʃieɪt/

depreciate

depreciar
Meaning
to reduce in value over time
Example
Cars tend to depreciate quickly in their first few years.
Los coches tienden a depreciarse rápidamente en sus primeros años.
C1 adjective ˌɜː.ɡəˈnɒm.ɪk

ergonomic

diseño ergonómico
Meaning
Designed for efficiency and comfort in the working environment; user-friendly and reducing strain.
Example
The chair has an ergonomic design for better posture.
La silla tiene un diseño ergonómico para una mejor postura.
C1 noun ˌriːˌvaɪ.təl.aɪˈzeɪ.ʃən

revitalization

revitalización
Meaning
The action of giving new life and vitality to something.
Example
Proper rest and nutrition lead to revitalization of the body.
El descanso adecuado y la nutrición conducen a la revitalización del cuerpo.
C1 adjective /ˌɪnstənˈteɪniəs/

instantaneous

instantáneo
Meaning
Happening immediately, without any delay.
Example
The change in temperature was almost instantaneous.
El cambio de temperatura fue casi instantáneo.
C1 noun /ˈɛkstrəˌvɜːrt/

extrovert

extrovertido
Meaning
a person who is outgoing, sociable, and energized by being around other people
Example
As an extrovert, she enjoys meeting new people at social events.
Como extrovertida, le gusta conocer gente nueva en eventos sociales.
C1 adjective, verb /ɪɡˈzɛmpt/

exempt

exento
Meaning
Free from an obligation or liability imposed on others.
Example
Students with high grades are exempt from the final exam.
Los estudiantes con altas calificaciones están exentos del examen final.
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.
C1 noun ˌlɪb.ərˈeɪ.ʃən

liberation

liberación
Meaning
The action of setting someone free from imprisonment, slavery, or oppression; release.
Example
Liberation movements inspired many countries.
Los movimientos de liberación inspiraron a muchos países.
C1 noun /ˈskaɪ.lɑːrk/

Sky-Lark

alondra
Meaning
a small brown bird known for singing while flying high in the sky
Example
The skylark sang beautifully as it soared above the meadow.
La alondra cantó hermosamente mientras se elevaba sobre el prado.
C1 adjective /ɪmˈfæt.ɪk/

Emphatic

enérgico; fuerte; expresado con fuerza y convicción
Meaning
forceful; strong; showing emphasis; expressed with force and conviction
Example
She gave an emphatic 'no' to the proposal.
Ella dio un 'no' enfático a la propuesta.
C1 noun /ˈfɔːrmən/

foreman

persona encargada de un grupo de trabajadores, especialmente en una fábrica o en una obra de construcción
Meaning
a person in charge of a group of workers, especially in a factory or construction site
Example
The foreman supervised the workers on the construction site.
El capataz supervisó a los trabajadores en el sitio de construcción.
C1 adjective /ˌeɪsɪˈmɛtrɪkəl/

asymmetrical

asimétrico
Meaning
Having parts that are not the same in size, shape, or arrangement.
Example
She wore an asymmetrical dress that drew everyone’s attention.
Ella llevaba un vestido asimétrico que atraía la atención de todos.
C1 noun /ˈkeɪ.sɪŋ/

Casing

cobertura; carcasa
Meaning
a cover or shell that protects or encloses something
Example
The mechanic removed the engine casing to examine the internal parts.
El mecánico quitó la carcasa del motor para examinar las piezas internas.
C1 noun /ˈpɜːrpɪtreɪtər/

perpetrator

delincuente
Meaning
a person who commits a harmful, illegal, or immoral act
Example
The police arrested the perpetrator of the crime.
La policía arrestó al delincuente del crimen.
C1 adjective /əˈfɜːrmətɪv/

affirmative

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

hydraulic

hidráulico
Meaning
operated by the pressure of liquid, especially water or oil
Example
The mechanic repaired the hydraulic system of the machine.
El mecánico reparó el sistema hidráulico de la máquina.
C1 adjective /əˈdɒptɪv/

adoptive

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

curler

rizador
Meaning
A small roller used for curling hair.
Example
She used a curler to style her hair for the party.
Ella usó un rizador para estilizar su cabello para la fiesta.
C1 adjective səˈsaɪ.ə.təl

societal

social
Meaning
Relating to society or social relationships.
Example
Societal benefits of space tourism are under debate.
Los beneficios sociales del turismo espacial están en debate.
C1 noun /taɪˈpɒɡrəfi/

typography

tipografía
Meaning
the art and technique of arranging type to make written language legible and visually appealing
Example
Good typography improves the readability of a website.
Una buena tipografía mejora la legibilidad de un sitio web.
C1 verb /per/

pare

pelar
Meaning
to cut away the outer covering or reduce something gradually
Example
She pared the apple before eating it.
Ella peló la manzana antes de comerla.
C1 noun /ˈskɛptɪk/

skeptic

escéptico
Meaning
A person who doubts or questions accepted beliefs or claims.
Example
The scientist was a skeptic of theories without solid evidence.
El científico era escéptico de las teorías sin evidencia sólida.
C1 noun /ɡeɪl/

Gale

tormenta; viento fuerte de 7 a 10 en la escala de Beaufort
Meaning
a very strong wind; a wind of force 7 to 10 on the Beaufort scale
Example
The fishing boats returned to harbor early due to the approaching gale.
Los botes de pesca regresaron al puerto temprano debido a la tormenta que se acercaba.
C1 adjective /ɪmˈpɑːrʃəl/

Impartial

imparcial; neutral
Meaning
treating all sides fairly; unbiased; neutral
Example
A good judge must remain impartial throughout the trial.
Un buen juez debe mantenerse imparcial durante todo el juicio.
C1 adjective /ˈprɛdəˌtɔri/

predatory

depredador/explotador
Meaning
Relating to animals that prey on others; exploiting or victimizing others for personal gain.
Example
The predatory bird swooped down on its prey.
El pájaro depredador se lanzó sobre su presa.
C1 noun /ɪnˈdɪɡ.nə.ti/

Indignity

indignidad; humillación; deshonra;
Meaning
treatment or circumstances that cause one to feel shame or loss of dignity; humiliation
Example
She refused to suffer the indignity of being searched without proper cause.
Ella se negó a sufrir la indignidad de ser registrada sin causa justificada.
C1 noun /ˈbenɪˌfæktər/

Benefactor

benefactor; patrón; donante
Meaning
a person who gives money or other help to support a person or cause; a patron
Example
The anonymous benefactor donated millions to the hospital.
El benefactor anónimo donó millones al hospital.
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 adjective /ɪˈnænɪmət/

inanimate

objeto inanimado
Meaning
not alive, especially not in the manner of animals and humans; lifeless
Example
The museum was full of inanimate objects from ancient times.
El museo estaba lleno de objetos inanimados de tiempos antiguos.
C1 verb /ˈæɡənaɪz/

agonize

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

cipher

cifrado
Meaning
A secret or disguised way of writing; a code; to put a message into secret writing.
Example
Military messages are protected using a cipher.
Los mensajes militares están protegidos mediante un cifrado.
C1 verb /ˈpoʊ.lə.raɪz/

polarize

polarizar
Meaning
to divide or cause to divide into two sharply contrasting groups or sets of opinions or beliefs
Example
The controversial decision polarized public opinion.
La decisión controvertida dividió la opinión pública en dos grupos opuestos.
C1 noun /ˈsʌn.stroʊk/

Sunstroke

golpe de calor
Meaning
a serious condition caused by overheating from prolonged exposure to high temperatures
Example
The worker suffered from sunstroke after working outside all day.
El trabajador sufrió un golpe de calor después de trabajar afuera todo el día.
C1 adjective /ˌhɛtərəˈʤiːniəs/

heterogeneous

heterogéneo
Meaning
consisting of different kinds or diverse elements
Example
The classroom was filled with a heterogeneous group of students.
El aula estaba llena de un grupo heterogéneo de estudiantes.
C1 adjective /ˈlʌʃəs/

luscious

delicioso
Meaning
deliciously sweet or rich; highly appealing to the senses
Example
She served a luscious chocolate cake.
Ella sirvió un delicioso pastel de chocolate.
C1 noun /ˌsʌpəˈzɪʃən/

supposition

suposición
Meaning
An assumption or belief that something is true without certain proof.
Example
His plan was based on the supposition that the market would recover quickly.
Su plan estaba basado en la suposición de que el mercado se recuperaría rápidamente.
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 noun /ˈraɪtʃəsnəs/

righteousness

justicia
Meaning
the quality of being morally right or justifiable
Example
His life was dedicated to righteousness and truth.
Su vida estuvo dedicada a la justicia y la verdad.
C1 verb /fɔːrˈɡoʊ/

forgo

renunciar
Meaning
to decide not to do or have something
Example
She decided to forgo dessert to maintain her diet.
Ella decidió renunciar al postre para mantener su dieta.
C1 adjective /ɪˈlɒdʒ.ɪ.kəl/

Illogical

Ilógico
Meaning
not reasonable or sensible; lacking logic
Example
It would be illogical to go swimming in such cold weather.
Sería ilógico nadar en un clima tan frío.
C1 noun /spɛk/

speck

mancha
Meaning
A very small spot, mark, or particle.
Example
There was a tiny speck of dust on the glass table.
Había una pequeña mancha de polvo en la mesa de cristal.
C1 noun /ˈnaɪ.tɪŋ.ɡeɪl/

Nightingale

ruiseñor
Meaning
small songbird known for its beautiful singing, especially at night
Example
The nightingale sang sweetly in the moonlight.
El ruiseñor cantó dulcemente bajo la luz de la luna.
C1 noun /ɪˈnɜː.ʃə/

Inertia

inercia; falta de actividad
Meaning
a tendency to do nothing or remain unchanged; lack of activity or movement
Example
The team's inertia prevented them from adapting to the rapidly changing market conditions.
La inercia del equipo les impidió adaptarse a las condiciones de mercado en rápido cambio.
C1 noun, adjective /ˌproʊlɪˈtɛəriən/

proletarian

proletario
Meaning
Relating to the working class, especially those who do not own property.
Example
The movement was rooted in proletarian struggles.
El movimiento estaba arraigado en las luchas proletarias.
C1 adjective /ˈstɔːlwərt/

stalwart

firme, leal
Meaning
Loyal, reliable, and hardworking; strongly built or sturdy.
Example
She has always been a stalwart supporter of the community.
Ella siempre ha sido una firme defensora de la comunidad.
C1 adjective /ˈkoʊpiəs/

copious

copioso
Meaning
abundant in supply or quantity
Example
She took copious notes during the lecture.
Ella tomó copiosas notas durante la conferencia.
C1 adjective /ˈɑːr.dənt/

Ardent

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

Meanness

maldad; avaricia
Meaning
The quality of being unkind, spiteful, or unfair; stinginess
Example
His meanness towards the poor children shocked everyone in the neighborhood.
Su maldad hacia los niños pobres sorprendió a todos en el vecindario.
C1 adjective /ˈsɜːrpənˌtiːn/

serpentine

serpenteante
Meaning
Having the shape, movement, or qualities of a serpent; winding or twisting.
Example
The road took a serpentine path through the mountains.
El camino tomaba una ruta serpenteante a través de las montañas.
C1 adjective /kənˈvɜːrdʒənt/

convergent

convergente
Meaning
tending to move toward a common point or result
Example
The two rivers have a convergent path before entering the lake.
Los dos ríos tienen un camino convergente antes de entrar al lago.
C1 adjective /ʌnˈθɪŋkɪŋ/

unthinking

irreflexivo
Meaning
done without careful thought; automatic or thoughtless
Example
His unthinking remark hurt her feelings.
Su comentario irreflexivo hirió sus sentimientos.
C1 noun dʒuːˈdɪʃ.ər.i

judiciary

poder judicial
Meaning
The judicial authorities of a country; the system of courts that interprets and applies the law.
Example
The judiciary ensures the rule of law.
El poder judicial asegura el estado de derecho.
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 noun /mɒnˈtɑːʒ/

montage

montaje
Meaning
A sequence of film editing or a composite image made by combining several separate pictures.
Example
The film opened with a montage of city life.
La película comenzó con un montaje de la vida en la ciudad.
C1 noun /ˈbʌrə, ˈbʊrə/

borough

barrio
Meaning
A town, district, or administrative division, especially one with its own local government.
Example
Brooklyn is a borough of New York City.
Brooklyn es un barrio de la ciudad de Nueva York.