substitution
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C1 noun /ˌsʌb.stɪˈtjuː.ʃən/

substitution

sustitución
Meaning
the action of replacing someone or something with another
Example
The substitution of the old system with the new one was difficult.
La sustitución del antiguo sistema por el nuevo fue difícil.
C1 adjective /ˈkæl.əs/

Callous

insensible; cruel; despiadado
Meaning
showing or having an insensitive and cruel disregard for others; emotionally hardened
Example
He showed a callous disregard for others' feelings.
Él mostró un desdén calloso por los sentimientos de los demás.
C1 noun /əˈluːʒən/

allusion

alusió
Meaning
An indirect reference to something without mentioning it explicitly.
Example
Her story contained an allusion to a famous myth.
Su historia contenía una alusión a un mito famoso.
C1 noun /ˈweɪ.stɪdʒ/

Wastage

desperdicio
Meaning
the action of using or expending something carelessly or without purpose
Example
The company reduced food wastage by implementing better inventory management.
La empresa redujo el desperdicio de alimentos implementando una mejor gestión de inventario.
C1 noun /ˈdʒɒt.ər/

Jotter

cuaderno
Meaning
a small notebook for writing quick notes or reminders
Example
The student carried a jotter to write down important points during lectures.
El estudiante llevó un cuaderno para escribir puntos importantes durante las lecciones.
C1 adjective /ɪnˈkrɛdjələs/

incredulous

incrédulo
Meaning
unwilling or unable to believe something
Example
He gave her an incredulous look when she claimed she could fly.
Le lanzó una mirada incrédula cuando afirmó que podría volar.
C1 verb /ˈpærəlaɪz/

paralyze

paralizar
Meaning
to cause someone or something to lose the ability to move or function normally
Example
The sudden shock seemed to paralyze him.
El choque repentino parecía paralizarlo.
C1 verb /ˈræʃənaɪz/

rationlize

racionalizar
Meaning
to justify or explain something with logical reasons, even if not appropriate or true
Example
He tried to rationlize his mistake by blaming the system.
Él trató de racionalizar su error culpando al sistema.
C1 noun /ˈwʊd.ən ˈsæn.dəl/

Wooden sandal

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

steeped

empapado
Meaning
Completely surrounded by or filled with a particular quality, influence, or experience.
Example
The town is steeped in history and tradition.
La ciudad está empapada en historia y tradición.
C1 verb /ˈiːkwəlaɪz/

equalize

igualar
Meaning
To make equal or level in status, value, or amount.
Example
The team equalized the score in the last minute.
El equipo igualó el marcador en el último minuto.
C1 noun /ˌdʒenəˈræləti/

generality

generalidad
Meaning
A vague, non-specific statement or principle that applies broadly.
Example
The speech was full of generalities and lacked concrete details.
El discurso estaba lleno de generalidades y carecía de detalles concretos.
C1 noun/adjective /ˈbæstərd/

bastard

bastardo
Meaning
a child born to unmarried parents (offensive); also used informally as an insult or to describe something unpleasant
Example
He called him a bastard in anger.
Lo llamó bastardo con ira.
C1 verb /ˈæk.lɪ.meɪt/

acclimate

aclimatarse
Meaning
To adapt or become accustomed to a new environment or situation
Example
It takes time to acclimate to a new climate.
Se necesita tiempo para aclimatarse a un nuevo clima.
C1 noun /ˈɪnˌmeɪt/

inmate

interno
Meaning
a person confined to an institution such as a prison or hospital
Example
The prison has over a thousand inmates.
La prisión tiene más de mil internos.
C1 adjective /ˌʌnɪˈkwɪvəkəl/

unequivocal

inequívoco
Meaning
Leaving no doubt; clear and unambiguous
Example
She gave an unequivocal answer to the question.
Ella dio una respuesta inequívoca a la pregunta.
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 adjective /spɑːrs/

sparse

escaso
Meaning
thinly scattered or distributed; not dense or abundant
Example
Vegetation was sparse in the desert.
La vegetación era escasa en el desierto.
C1 noun /ˈplæz.mə/

Plasma

parte líquida de la sangre; gas ionizado; suero sanguíneo sin proteínas de coagulación
Meaning
the liquid part of blood; ionized gas; blood serum without clotting proteins
Example
Blood plasma contains various proteins and nutrients.
El plasma sanguíneo contiene varias proteínas y nutrientes.
C1 adjective /ɪnˈɡreɪnd/

ingrained

arraigado
Meaning
Firmly fixed or established; deeply rooted and difficult to change.
Example
His ingrained habits were hard to break.
Sus hábitos arraigados eran difíciles de romper.
C1 noun /ɡʌst/

Gust

ráfaga de viento repentina
Meaning
a sudden strong rush of wind; a sudden burst or outburst of feeling
Example
A powerful gust of wind knocked over the outdoor umbrellas at the cafe.
Una ráfaga poderosa de viento derribó las sombrillas exteriores en el café.
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 /dɪˈsɛkt/

dissect

disecar
Meaning
to cut apart an animal, plant, or other organism to study its internal parts; to analyze something in detail
Example
In biology class, students had to dissect a frog to learn about its anatomy.
En la clase de biología, los estudiantes tuvieron que diseccionar una rana para aprender sobre su anatomía.
C1 noun /ˈtɪt.bɪt/

Titbit

un pequeño trozo de comida sabrosa; una pequeña pieza interesante de información
Meaning
a small piece of tasty food; a small interesting piece of information
Example
She served delicious titbits at the party.
Ella sirvió deliciosos bocaditos en la fiesta.
C1 verb /ˈwɪtl/

whittle

tallar
Meaning
to carve or shape something by cutting off small pieces; to gradually reduce
Example
He spent the afternoon whittling a piece of wood into a toy.
Él pasó la tarde tallando un trozo de madera en un juguete.
C1 noun /rɪt/

writ

auto judicial
Meaning
A formal written order issued by a court.
Example
The judge issued a writ of habeas corpus.
El juez emitió un auto de habeas corpus.
C1 verb /ɪˈkɒnəmaɪz/

economize

economizar
Meaning
To reduce spending or use resources carefully.
Example
Families are trying to economize by cutting unnecessary expenses.
Las familias están tratando de economizar reduciendo gastos innecesarios.
C1 verb /tʃɑːr/

char

quemar
Meaning
To burn or scorch something so that it becomes blackened.
Example
The cook accidentally charred the steak.
El cocinero accidentalmente quemó el filete.
C1 noun /ɪnˈsɜːrdʒəns/

insurgence

insurgencia
Meaning
An act of rebellion or uprising against authority.
Example
The government struggled to contain the growing insurgence.
El gobierno luchó por contener la creciente insurgencia.
C1 adjective /ɪkˈspiːdiənt/

expedient

conveniente
Meaning
suitable or convenient for achieving a particular end, sometimes at the expense of morality
Example
It was expedient to take the shortcut despite the risks.
Era conveniente tomar el atajo a pesar de los riesgos.
C1 noun /ˌɪn.dʒəˈnjuː.ɪ.ti/

ingenuity

ingenio
Meaning
The quality of being clever, original, and inventive.
Example
His ingenuity led to groundbreaking innovations.
Su ingenio llevó a innovaciones pioneras.
C1 adjective ˈflʌd proʊn

flood-prone

propenso a inundaciones
Meaning
Susceptible to flooding; likely to experience floods frequently.
Example
Bangladesh is a flood-prone deltaic nation.
Bangladesh es una nación deltaica propensa a inundaciones.
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.
C1 noun səˈsteɪnəbəl ænd kəˈlæbərətɪv əˈproʊtʃ

sustainable and collaborative approach

enfoque sostenible y colaborativo
Meaning
A method of working together that can be maintained over time without depleting resources or causing harm.
Example
A sustainable and collaborative approach is crucial for solving environmental problems.
Un enfoque sostenible y colaborativo es crucial para resolver los problemas ambientales.
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 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 adjective /smʌɡ/

smug

presumido
Meaning
having or showing an excessive pride in oneself or one's achievements
Example
He wore a smug smile after winning the debate.
Llevaba una sonrisa presuntuosa después de ganar el debate.
C1 verb/noun /skaʊl/

scowl

fruncir el ceño
Meaning
To frown in an angry or bad-tempered way.
Example
She scowled when she heard the unfair remark.
Ella frunció el ceño cuando escuchó el comentario injusto.
C1 adjective /ˈtækt.fəl/

Tactful

hábil; diplomático;
Meaning
showing skill and sensitivity in dealing with others or difficult situations
Example
He gave a tactful response to avoid hurting her feelings.
Él dio una respuesta diplomática para evitar herir sus sentimientos.
C1 noun /kəˈluːʒən/

collusion

colusión
Meaning
A secret agreement or cooperation, especially for an illegal or dishonest purpose.
Example
There was evidence of collusion between the officials and the contractors.
Había evidencia de colusión entre los funcionarios y los contratistas.
C1 noun /ˈtriːkəl/

treacle

jarabe espeso y dulce
Meaning
A thick, sweet syrup; excessively sentimental speech or writing.
Example
She poured treacle over the pancakes.
Ella vertió el jarabe sobre los panqueques.
C1 noun ˈrez.ɪ.djuːz

residues

restos
Meaning
A small amount of something that remains after the main part has gone or been taken or used.
Example
The burning process leaves no harmful residues.
El proceso de combustión no deja residuos dañinos.
C1 adjective ˈpɪv.ə.təl

pivotal

fundamental
Meaning
Of crucial importance in relation to the development or success of something else.
Example
Renewable energy plays a pivotal role in sustainability.
La energía renovable juega un papel fundamental en la sostenibilidad.
C1 adjective /ˌoʊvərˈbɛrɪŋ/

overbearing

opresivo
Meaning
unpleasantly or arrogantly domineering
Example
His overbearing attitude made everyone uncomfortable.
Su actitud opresiva hizo que todos se sintieran incómodos.
C1 adjective /ˈhæpləs/

hapless

desdichado, desafortunado
Meaning
unfortunate, unlucky, deserving pity
Example
The hapless traveler lost his passport on the very first day.
El desdichado viajero perdió su pasaporte en el primer día.
C1 adjective /ˈflʌstərd/

flustered

desconcertado
Meaning
in a state of confusion or agitation
Example
She appeared flustered after being asked so many questions.
Ella parecía desconcertada después de tantas preguntas.
C1 verb /ˈlɔːndər/

launder

lavar ropa / ocultar el origen del dinero obtenido ilegalmente
Meaning
to wash clothes, linens, etc.; or to conceal the origins of money obtained illegally
Example
She laundered all the dirty clothes on Sunday.
Ella lavó toda la ropa sucia el domingo.
C1 noun /ˈleɪ.dəl/

Ladle

cucharón
Meaning
a large deep spoon with a long handle, used for serving soup or other liquids
Example
Use the ladle to serve the hot soup into bowls.
Usa el cucharón para servir la sopa caliente en los tazones.
C1 noun ˈɪm.pɪ.təs

impetus

impulso
Meaning
The force or motivation that drives something forward; momentum.
Example
The new policy provided an impetus for economic growth.
La nueva política proporcionó un impulso para el crecimiento económico.
C1 verb /ˈʃrɪvəl/

shrivel

arrugar
Meaning
To become dry, wrinkled, and smaller due to lack of moisture.
Example
The flowers shriveled under the hot sun.
Las flores se arrugaron bajo el sol caliente.
C1 adjective /trænˈsen.dənt/

transcendent

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

Indifference

indiferencia; desinterés; apatía
Meaning
lack of interest, concern, or sympathy; the state of not caring about something
Example
His indifference to his studies resulted in poor grades throughout the semester.
Su indiferencia por sus estudios resultó en malas calificaciones durante todo el semestre.
C1 noun /ˈspɪnstər/

spinster

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

interrogate

interrogar
Meaning
to ask someone questions in a thorough and formal way; to question intensively
Example
The police interrogated the suspect for hours.
La policía interrogó al sospechoso durante horas.
C1 noun /rɪˈdʒɪdəti/

Rigidity

rigidez
Meaning
inability to bend or be forced out of shape; unwillingness to change or compromise
Example
The rigidity of the old system prevented any innovation.
La rigidez del antiguo sistema impidió cualquier innovación.
C1 noun/verb /ˈɪnsɛns/

incense

incienso / enfurecer
Meaning
a substance burned for its sweet smell (noun); to make very angry (verb)
Example
The smell of incense filled the temple, but his rude words incensed her.
El olor del incienso llenó el templo, pero sus palabras groseras la enfurecieron.
C1 adjective /ˌmiːtiˈɔːrɪk/

meteoric

relacionado con meteoritos; muy rápido y a menudo temporal.
Meaning
Relating to meteors; very rapid and often temporary.
Example
The singer’s meteoric rise to fame surprised everyone.
El ascenso meteórico del cantante a la fama sorprendió a todos.
C1 adjective /ˈwɒŋki/

Wonky

inestable; poco fiable; que no funciona correctamente
Meaning
unstable; unreliable; not working properly
Example
The old chair was wonky and wobbled every time someone sat on it.
La vieja silla estaba inestable y se tambaleaba cada vez que alguien se sentaba en ella.
C1 adjective /ˈɡruːsəm/

gruesome

espantoso
Meaning
Causing horror or disgust.
Example
The police discovered a gruesome crime scene.
La policía descubrió una escena de crimen espantosa.
C1 adjective /ˌɪnəˈtɛntɪv/

inattentive

inattento
Meaning
not paying attention; lacking focus or concentration
Example
The inattentive student missed several important instructions.
El estudiante inattento perdió varias instrucciones importantes.
C1 adjective ɪnˈdʒiː.ni.əs

ingenious

ingenioso
Meaning
Showing inventiveness and skill; clever, original, and inventive.
Example
His ingenious ideas transformed modern physics.
Sus ideas ingeniosas transformaron la física moderna.
C1 verb /aʊtˈwɪt/

outwit

superar con astucia
Meaning
to defeat or gain an advantage over someone by being more clever or cunning
Example
The fox managed to outwit the hunters.
El zorro logró engañar a los cazadores.
C1 noun ˈfeɪz.aʊt

phase-out

eliminación gradual
Meaning
A gradual reduction and eventual elimination of something.
Example
A phase-out of fossil fuels was agreed upon.
Se acordó la eliminación gradual de los combustibles fósiles.
C1 noun /ˈlʌɡ.ɪdʒ væn/

Luggage van

furgón de equipaje
Meaning
a vehicle designed for carrying luggage and cargo
Example
The luggage van carried all the passengers' suitcases.
El furgón de equipaje transportó todas las maletas de los pasajeros.
C1 verb /rɪˈtreɪs/

retrace

volver sobre un camino o ruta, recordar y repetir pasos anteriores
Meaning
to go back over a path or route; to recall and repeat steps taken earlier
Example
She retraced her steps to find her lost keys.
Ella volvió sobre sus pasos para encontrar sus llaves perdidas.
C1 noun mælˈnʌr.ɪʃ.mənt

malnourishment

desnutrición
Meaning
Lack of proper nutrition, caused by not having enough to eat, not eating enough of the right things, or being unable to use the food that one does eat.
Example
Children in poverty-stricken areas suffer from malnourishment.
Los niños en áreas empobrecidas sufren de desnutrición.
C1 noun ˈpɛd.ə.ɡɒ.dʒi

pedagogy

pedagogía
Meaning
The method and practice of teaching, especially as an academic subject or theoretical concept.
Example
Modern pedagogy focuses on student-centered learning.
La pedagogía moderna se centra en el aprendizaje centrado en el estudiante.
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 adverb /əˈlɒft/

aloft

en el aire
Meaning
Up in or into the air; overhead.
Example
The kite was flying aloft in the clear sky.
La cometa volaba alto en el cielo claro.
C1 adjective /ˈluːdɪkrəs/

ludicrous

absurdo
Meaning
so foolish, unreasonable, or out of place as to be amusing
Example
It is ludicrous to think the Earth is flat.
Es absurdo pensar que la Tierra es plana.
C1 noun /brɪm/

Brim

borde; ala; ribete
Meaning
the projecting edge of a hat; the edge or lip of something
Example
The wide brim of his hat protected him from the scorching sun.
El amplio borde de su sombrero lo protegió del sol abrasador.
C1 noun /ˈswiːt.miːt/

Sweetmeat

dulce
Meaning
a small piece of confectionery or candy; a sweet delicacy
Example
The children enjoyed the traditional sweetmeats during the festival.
Los niños disfrutaron de los dulces tradicionales durante el festival.
C1 noun /ˈmoʊldɪŋ/

molding

moldura decorativa
Meaning
A decorative strip or design, often used on walls, ceilings, or furniture.
Example
The wooden molding gave the room a classic look.
El moldaje de madera le dio a la habitación un aspecto clásico.
C1 noun /ɪnˈækjʊrəsi/

inaccuracy

inexactitud
Meaning
lack of accuracy or precision; an incorrect or wrong detail
Example
The report contained several factual inaccuracies.
El informe contenía varias inexactitudes.
C1 noun /ˈpæntəmaɪm/

pantomime

pantomima
Meaning
A type of theatrical performance using gestures and movements without spoken words; in Britain, a musical comedy play for families performed at Christmas.
Example
The children enjoyed the Christmas pantomime at the local theater.
Los niños disfrutaron de la pantomima navideña en el teatro local.
C1 noun ˈkiː.stəʊn ˈspiː.ʃiːz

keystone species

especie clave
Meaning
A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Example
Wolves are a keystone species that regulate prey populations.
Los lobos son una especie clave que regula las poblaciones de presas.
C1 noun /stɪnt/

stint

trabajo temporal
Meaning
a period of time spent doing a particular job or activity
Example
She did a short stint as a teacher before moving abroad.
Ella hizo un corto trabajo como profesora antes de mudarse al extranjero.
C1 verb /hɔːrd/

hoard

acumular
Meaning
to accumulate and hide away a large supply of something, often secretly
Example
During the crisis, many people began to hoard food and water.
Durante la crisis, muchas personas comenzaron a acumular comida y agua.
C1 noun /rɔ ˈtɜrmərɪk/

Raw Turmeric

cúrcuma cruda
Meaning
fresh unprocessed root of the turmeric plant used as a spice and medicine
Example
Grate raw turmeric into the curry for authentic flavor.
Ralla la cúrcuma cruda en el curry para un sabor auténtico.
C1 verb /ədˈmɒnɪʃ/

admonish

amonestar
Meaning
to warn or reprimand someone firmly; to advise or urge earnestly
Example
The teacher admonished the students for being late.
El profesor amonestó a los estudiantes por llegar tarde.
C1 noun /ˈhæŋ.ər/

Hanger

percha
Meaning
a shaped piece of wood, plastic, or metal with a hook at the top, used to hang up clothes
Example
She hung her dress on a wooden hanger to prevent it from getting wrinkled.
Colgó su vestido en una percha de madera para evitar que se arrugara.
C1 noun ˈnærətɪv staɪl

narrative style

estilo narrativo
Meaning
The way in which a story is told, including the point of view and the voice of the narrator.
Example
Dickens' narrative style is engaging and emotional.
El estilo narrativo de Dickens es cautivador y emocional.
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 noun /kræɡ/

crag

un acantilado o roca empinada
Meaning
a steep or rugged cliff or rock face
Example
The hikers climbed the jagged crag to reach the summit.
Los excursionistas subieron el acantilado escarpado para llegar a la cima.
C1 noun /ɪnˈvɜːrʒən/

inversion

inversión
Meaning
A reversal of the normal order, position, or relationship.
Example
In poetry, inversion is often used to create emphasis.
En poesía, la inversión se usa a menudo para crear énfasis.
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 /ɪˈnɪɡ.mə/

enigma

enigma
Meaning
A person or thing that is mysterious, puzzling, or difficult to understand.
Example
Life remains an enigma to many.
La vida sigue siendo un enigma para muchos.
C1 verb /ˌoʊvərˈrʌn/

overrun

invadir
Meaning
to spread over or occupy completely; to exceed a limit or time
Example
The garden was overrun with weeds.
El jardín estaba invadido de maleza.
C1 noun /mɔːrˈfɑːlədʒi/

morphology

morfología
Meaning
the study of the form and structure of things, especially in language and biology
Example
Morphology studies the structure of words and how they are formed.
La morfología estudia la estructura de las palabras y cómo se forman.
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 adjective /ˈstʌm.pi/

Stumpy

bajo y grueso
Meaning
short and thick; having a short, thick appearance
Example
The stumpy little dog wagged its tail enthusiastically.
El perrito bajo y grueso movió su cola con entusiasmo.
C1 adjective /məˈləʊ.di.əs/

Melodious

melodioso
Meaning
having a pleasant musical sound; tuneful
Example
Her melodious voice captivated the entire audience.
Su voz melodiosa cautivó a toda la audiencia.
C1 noun /ˌpɜːrmjuˈteɪʃən/

permutation

permutación
Meaning
An arrangement or reordering of elements, often in mathematics or logic.
Example
The puzzle can be solved by trying all possible permutations of the tiles.
El rompecabezas se puede resolver probando todas las permutaciones posibles de las piezas.
C1 noun /ˌpæn.əˈræm.ə/

panorama

vista panorámica
Meaning
An unbroken view of the whole region surrounding an observer.
Example
From the hilltop, we enjoyed a breathtaking panorama of the city.
Desde la cima de la colina, disfrutamos de un impresionante panorama de la ciudad.
C1 noun /ˌkɒn.təmˈpleɪ.ʃən/

contemplation

profunda reflexión
Meaning
The action of looking thoughtfully at something for a long time; deep reflective thought.
Example
She sat in contemplation before making her decision.
Ella se sentó en profunda reflexión antes de tomar su decisión.
C1 noun /dɪn/

din

ruido
Meaning
a loud, unpleasant, and prolonged noise
Example
The din of traffic outside made it hard to concentrate.
El ruido del tráfico afuera hacía difícil concentrarse.
C1 noun /ɪnˈfjuːʒən/

infusion

infusión
Meaning
the act of introducing something into another; a drink made by steeping leaves or herbs in liquid
Example
She prepared a calming infusion of chamomile tea.
Ella preparó una infusión calmante de té de manzanilla.
C1 adjective /ʃrɪl/

shrill

sonido agudo
Meaning
High-pitched and piercing in sound.
Example
The shrill whistle startled everyone in the room.
El silbido agudo sorprendió a todos en la sala.
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 verb /bloʊt/

bloat

hinchar
Meaning
to swell or cause to swell, often due to fluid or gas
Example
Eating too much junk food can bloat your stomach.
Comer demasiada comida chatarra puede hacer que tu estómago se hinche.
C1 adverb /ʌnˈnætʃrəli/

unnaturally

de manera antinatural
Meaning
in a way that is not natural or normal; excessively or strangely
Example
He smiled unnaturally, making everyone feel uncomfortable.
Sonrió de manera antinatural, haciendo que todos se sintieran incómodos.
C1 verb /əˈskraɪb/

ascribe

atribuir, asignar
Meaning
To attribute something to a cause, source, or person.
Example
Many scholars ascribe the poem to an unknown author.
Muchos eruditos atribuyen el poema a un autor desconocido.
C1 adjective /ɪmˈbrɔɪld/

embroiled

involucrado
Meaning
being deeply involved in a difficult situation, conflict, or scandal
Example
She found herself embroiled in a heated family dispute.
Se encontró a sí misma involucrada en una acalorada disputa familiar.
C1 adjective /ˈluː.krə.tɪv/

lucrative

lucrativo
Meaning
Producing a great deal of profit; highly profitable or financially rewarding.
Example
The real estate business is highly lucrative in urban areas.
El negocio inmobiliario es altamente lucrativo en las zonas urbanas.
C1 verb /ɪmˈpɒvərɪʃ/

impoverish

empobrecer
Meaning
To make someone poor or reduce the quality or richness of something.
Example
The long war impoverished the entire nation.
La larga guerra empobreció a toda la nación.
C1 verb /bʌdʒ/

budge

mover ligeramente / cambiar de opinión o posición
Meaning
To move slightly; to change one’s opinion or position.
Example
Despite the pressure, he refused to budge from his decision.
A pesar de la presión, él se negó a moverse de su decisión.
C1 adjective,noun /kənˈtɪn.dʒənt/

contingent

dependiente / contingente
Meaning
dependent on something else; a group of people representing an organization
Example
Attendance is contingent on prior registration. / A contingent of students attended the conference.
La asistencia depende de la inscripción previa. / Un contingente de estudiantes asistió a la conferencia.
C1 verb /dʒæb/

jab

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

lull

adormecer
Meaning
to soothe or calm; to cause to sleep or rest
Example
The gentle music lulled the baby to sleep.
La música suave hizo dormir al bebé.
C1 noun /ˈbɑːr.tər ˌsɪs.təm/

barter system

sistema de intercambio
Meaning
A system of exchange where goods and services are traded directly without using money.
Example
Ancient civilizations used the barter system for trade.
Las civilizaciones antiguas usaban el sistema de intercambio para el comercio.
C1 verb /ɛtʃ/

etch

grabar
Meaning
to cut or carve a design onto a surface
Example
The artist etched her initials into the glass.
La artista grabó sus iniciales en el vidrio.
C1 adjective /ˈstrɛnjuəs/

strenuous

arduo
Meaning
Requiring or using great effort and energy.
Example
Climbing the mountain was a strenuous task.
Escalar la montaña fue una tarea ardua.
C1 adjective, noun, verb /ˈtrɛbəl/

treble

triplicado, tono alto
Meaning
triple; consisting of three parts; high-pitched sound in music
Example
The company's profits trebled in just two years.
Las ganancias de la empresa se triplicaron en solo dos años.
C1 adjective /ɪmˈpɛn.ɪ.trə.bəl/

impenetrable

impenetrable
Meaning
Impossible to pass through or enter; impossible to understand.
Example
The dense forest was nearly impenetrable.
El bosque denso era casi impenetrable.
C1 noun /prɪˈtɛnʃən/

pretension

pretensión, falsa apariencia
Meaning
A claim or assertion to something, often without justification; an attempt to impress by showing greater importance or talent than is actually possessed.
Example
His pretension to be an expert was quickly exposed.
Su pretensión de ser un experto fue rápidamente expuesta.
C1 verb /rɪˈtɑːrd/

retard

retrasar / ralentizar
Meaning
to delay or slow down the progress of something
Example
Lack of funds may retard the development of the project.
La falta de fondos puede retrasar el desarrollo del proyecto.
C1 verb/noun /ˈswæɡ.ər/

swagger

presunción
Meaning
To walk or behave in a very confident and arrogant way.
Example
He swaggered into the room as if he owned the place.
Entró en la habitación como si fuera dueño del lugar.
C1 verb /dɪˈfeɪs/

deface

desfigurar
Meaning
to spoil the surface or appearance of something, especially by writing or drawing on it
Example
The vandals defaced the wall with graffiti.
Los vándalos desfiguraron la pared con grafitis.
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 verb /ɪmˈpiːtʃ/

impeach

impeachar
Meaning
To charge a public official with misconduct while in office.
Example
The parliament voted to impeach the president.
El parlamento votó para impugnar al presidente.
C1 noun /ˈpoʊdiətrɪst/

podiatrist

podólogo
Meaning
a doctor specializing in foot care
Example
I have an appointment with the podiatrist for my ankle pain.
Tengo una cita con el podólogo para el dolor de tobillo.