fluidity
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN English BN Bengali HI Hindi ES Español FR Francés DE Alemán RU Ruso ZH Chino JA Japonés
All Vocabulary Cards All Vocabularies
C1 noun fluˈɪd.ɪ.ti

fluidity

fluididez
Meaning
The ability of a substance to flow easily; smooth and graceful movement or style.
Example
The fluidity of the dancer's movements was mesmerizing.
La fluididez de los movimientos de la bailarina era hipnotizante.
C1 noun fɔːlt ˈtɒl.ər.əns

fault-tolerance

tolerancia a fallos
Meaning
The ability of a system to continue operating properly in the event of the failure of some of its components.
Example
Fault-tolerance ensures dependable systems.
La tolerancia a fallos asegura sistemas confiables.
C1 noun /ˈfoʊliɪdʒ/

foliage

follaje
Meaning
The leaves of a plant, collectively.
Example
The autumn foliage looked stunning in the park.
El follaje de otoño se veía impresionante en el parque.
C1 adjective /frəˈnɛtɪk/

frenetic

frenético
Meaning
Fast and energetic in a wild or uncontrolled way.
Example
The stock market experienced frenetic trading after the announcement.
El mercado de valores experimentó un comercio frenético después del anuncio.
C1 adjective /ˈfrɔːdjʊlənt/

fraudulent

fraudulento
Meaning
Involving or using deceit, especially criminal deception.
Example
He was arrested for making fraudulent insurance claims.
Él fue arrestado por hacer reclamaciones fraudulentas de seguros.
C1 noun (plural of fungus) /ˈfʌndʒaɪ/

fungi

hongo
Meaning
a group of spore-producing organisms such as mushrooms, molds, and yeasts
Example
Fungi play an important role in breaking down organic matter in nature.
Los hongos desempeñan un papel importante en la descomposición de materia orgánica en la naturaleza.
C1 noun /frɪˈvɒləti/

frivolity

frivolidad
Meaning
Lack of seriousness; silly or trivial behavior.
Example
The teacher discouraged frivolity during the exam.
El profesor desalentó la frivolidad durante el examen.
C1 noun /ˌfɪɡjʊˈriːn/

figurine

pequeña figura decorativa
Meaning
a small ornamental statue or model of a human or animal
Example
She bought a porcelain figurine of a dancing ballerina.
Ella compró una figura de porcelana de una bailarina de ballet.
C1 verb, noun /ˈflʌstər/

fluster

confundir
Meaning
to make someone agitated or confused
Example
The unexpected question flustered him.
La pregunta inesperada lo confundió.
C1 noun, verb /ˈfrænʧaɪz/

franchise

franquicia
Meaning
A legal right to sell or distribute goods or services in a specific area; to grant such a right.
Example
He opened a new fast-food franchise in the city.
Él abrió una nueva franquicia de comida rápida en la ciudad.
C1 adjective /ˌfɑːrˈfɛtʃt/

far-fetched

increíble
Meaning
unlikely to happen or be true; improbable
Example
His explanation for being late was a bit far-fetched.
Su explicación por llegar tarde era un poco increíble.
C1 noun /fiˈæs.koʊ/

fiasco

fracaso total
Meaning
a complete failure, especially a ludicrous or humiliating one
Example
The event turned into a complete fiasco due to poor planning.
El evento se convirtió en un fracaso total debido a una mala planificación.
C1 adjective /ˈfiːbl/

feeble

débil, flojo
Meaning
lacking physical strength or vigor; weak
Example
After the illness, she felt too feeble to stand.
Después de la enfermedad, se sintió demasiado débil para levantarse.
C1 noun /ˈflæt.ər.i/

Flattery

adulación
Meaning
excessive and insincere praise, given especially to further one's own interests
Example
His constant flattery made everyone suspicious of his true motives.
Su constante adulación hizo que todos sospecharan de sus verdaderas intenciones.
C1 verb /flɑp/

flop

fracaso
Meaning
to fall or move heavily and clumsily; to fail completely
Example
The new movie flopped at the box office.
La nueva película fracasó en la taquilla.
C1 noun /ˈfɪɡjərˌhɛd/

figurehead

cabeza simbólica
Meaning
a nominal leader with no real power; a symbolic head
Example
The king was merely a figurehead with no real authority.
El rey era simplemente un líder simbólico sin poder real.
C1 noun /fəˈnætɪsɪzəm/

fanaticism

fanatismo
Meaning
the quality of being fanatical; extreme zeal or obsession
Example
Religious fanaticism can lead to intolerance and conflict.
El fanatismo religioso puede llevar a la intolerancia y al conflicto.
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 /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 adjective /freɪl/

frail

débil
Meaning
Physically weak and delicate.
Example
The old man was too frail to walk without help.
El anciano estaba demasiado débil para caminar sin ayuda.
C1 noun /ˈfjuː.dʒə.tɪv/

Fugitive

fugitivo
Meaning
a person who has escaped from a place or is in hiding, especially to avoid arrest
Example
The police launched a manhunt to capture the fugitive who escaped from prison.
La policía lanzó una búsqueda para capturar al fugitivo que escapó de la prisión.
C1 adjective /ˈfaɪ.naɪt/

Finite

finito; limitado
Meaning
limited; having bounds or limits; not infinite
Example
Earth has finite natural resources.
La Tierra tiene recursos naturales finitos.
C1 adjective /ˈflaʊəri/

flowery

florido / ornamentado
Meaning
Full of flowers or overly elaborate in style or language.
Example
She wrote a flowery letter filled with poetic phrases.
Ella escribió una carta florida llena de frases poéticas.
C1 noun /fɪˈnɛs/

finesse

sutilidad, destreza, refinamiento
Meaning
Subtlety and skill; refinement and delicacy in performance or artistry.
Example
The artist painted with great finesse.
El artista pintó con gran destreza.
C1 noun /ˈfɔːrdʒəri/

forgery

falsificación
Meaning
the crime of making fake documents, money, or artworks
Example
The bank detected a forgery in the signature on the cheque.
El banco detectó una falsificación en la firma del cheque.
C1 noun ˌflʌk.tʃuˈeɪ.ʃən

fluctuation

fluctuación
Meaning
An irregular rising and falling in number or amount; a variation.
Example
The stock market experiences frequent fluctuation.
El mercado de valores experimenta frecuentes fluctuaciones.
C1 noun /ˈfaɪərɑːm/

firearm

arma de fuego
Meaning
a weapon capable of firing a projectile using gunpowder or other propellant
Example
The police found a hidden firearm during the investigation.
La policía encontró un arma de fuego oculta durante la investigación.
C1 adjective /ˌfɑːrˈfetʃt/

farfetched

improbable o poco probable
Meaning
unlikely to happen or be true; improbable
Example
His explanation for being late sounded farfetched.
Su explicación para llegar tarde sonaba inverosímil.
C1 adjective /ˌfʊl ˈbɒd.id/

full-bodied

de sabor intenso
Meaning
Having a strong, rich, and robust quality, especially of wine, coffee, or voice.
Example
He prefers a full-bodied red wine with his dinner.
Él prefiere un vino tinto de sabor intenso con su cena.
C1 adverb /ˈfeɪ.təl.i/

Fatally

fatalmente
Meaning
in a way that causes death; with deadly consequences; critically
Example
The accident fatally injured two passengers.
El accidente hirió fatalmente a dos pasajeros.
C1 verb /ˈfrɒlɪk/

frolic

jugar alegremente
Meaning
to play and move about cheerfully, energetically, or playfully
Example
The children frolicked in the garden all afternoon.
Los niños jugaron alegremente en el jardín toda la tarde.
C1 noun /ˈfɪʃ.ər/

fissure

fisura
Meaning
a long, narrow opening or crack in a surface or object
Example
The earthquake caused a deep fissure in the road.
El terremoto causó una fisura profunda en la carretera.
C1 adjective ˈfæʃ.ɪst

fascist

fascista
Meaning
Relating to or characteristic of fascism; extremely authoritarian.
Example
Fascist governance undermines freedom.
El gobierno fascista socava la libertad.
C1 noun /ˈfæk.ʃən/

Faction

facción
Meaning
a small organized dissenting group within a larger one
Example
Different factions within the party disagreed about the new policy.
Diferentes facciones dentro del partido no estuvieron de acuerdo sobre la nueva política.
C1 noun /fæd/

fad

moda pasajera, tendencia
Meaning
a temporary fashion or trend; a short-lived craze
Example
The new diet became a popular fad among teenagers.
La nueva dieta se convirtió en una moda pasajera entre los adolescentes.
C1 adjective /ˈflæʃi/

flashy

llamativo, ostentoso
Meaning
ostentatious or showy in a way that attracts attention
Example
He drove a flashy sports car through the city streets.
Él condujo un coche deportivo llamativo por las calles de la ciudad.
C1 noun /ˈfoʊ.kəs ˈtræk.ɪŋ/

focus tracking

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

federate

federar
Meaning
to unite in a league or federation; to form an alliance
Example
Several states federated to create a stronger union.
Varios estados se federaron para crear una unión más fuerte.
C1 verb /fɔːrˈseɪk/

forsake

abandonar
Meaning
to abandon or give up something or someone
Example
He decided not to forsake his old friends despite his success.
Él decidió no abandonar a sus viejos amigos a pesar de su éxito.
C1 noun /ˈfɔːr.tɪ.tjuːd/

fortitude

fortaleza
Meaning
Courage in pain or adversity; mental and emotional strength in facing difficulty.
Example
She faced adversity with great fortitude.
Ella enfrentó las adversidades con gran fortaleza.
C1 noun /fəˌsɪlɪˈteɪʃən/

facilitation

facilitación
Meaning
The action of facilitating or making an action or process easier or helping bring about an outcome.
Example
Her facilitation made the meeting run smoothly.
Su facilitación hizo que la reunión fuera fluida.
C1 verb /ˈfɜːrmɛnt/

ferment

someterse a un proceso químico donde los azúcares se convierten en alcohol o ácido; incitar o agitar el cambio
Meaning
to undergo a chemical process where sugars are converted to alcohol or acid; to incite or stir up change
Example
The grapes are left to ferment for several weeks.
Las uvas se dejan fermentar durante varias semanas.
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 adverb /ˈfɪksɪdli/

Fixedly

fijamente
Meaning
in a steady, unmoving manner; with intense concentration
Example
He stared fixedly at the painting.
Él miró fijamente la pintura.
C1 noun /ˈfɔːrwɜːrd/

foreword

prólogo
Meaning
a short introduction at the beginning of a book, typically written by someone other than the author
Example
The foreword of the book was written by a famous historian.
El prólogo del libro fue escrito por un historiador famoso.
C1 noun flɛər

flair

habilidad natural
Meaning
A natural ability to do something well.
Example
She has a flair for design, always creating visually stunning work.
Ella tiene una habilidad especial para el diseño, siempre creando trabajos visualmente impresionantes.
C1 verb /fɔːˈbɛər/

forbear

abstenerse
Meaning
To refrain from doing something; to show patience or self-control.
Example
She forbore from commenting on his mistake.
Ella se abstuvo de comentar sobre su error.
C1 noun /ˈfɒdər/

fodder

forraje
Meaning
food for livestock such as cattle, horses, or sheep; also something considered of little value but used to supply a demand
Example
The farmer stored enough fodder for the cattle to last through winter.
El granjero almacenó suficiente forraje para que el ganado tuviera suficiente durante el invierno.
C1 adjective /ˈfɔːrθˌraɪt/

forthright

directo
Meaning
Direct and honest in speech or behavior; straightforward.
Example
She was forthright in her criticism of the policy.
Ella fue directa en su crítica a la política.
C1 noun /ˈfɔɪeɪr/

foyer

vestíbulo
Meaning
An entrance hall or lobby in a building.
Example
The guests waited in the hotel foyer before checking in.
Los huéspedes esperaron en el vestíbulo del hotel antes de registrarse.
C1 adjective /ˈfleɪɡrənt/

flagrant

escandaloso y claramente erróneo
Meaning
shockingly noticeable or evident; glaringly wrong
Example
It was a flagrant violation of the rules.
Fue una clara violación de las reglas.
C1 adjective /ˈfɜːr.vənt/

fervent

apasionado, entusiasta
Meaning
having or showing intense passion or enthusiasm
Example
She gave a fervent speech about climate change.
Ella dio un discurso apasionado sobre el cambio climático.
C1 noun /fəˈtæləti/

fatality

fatalidad
Meaning
An occurrence of death by accident, disaster, or violence.
Example
The accident resulted in one fatality.
El accidente resultó en una fatalidad.
C1 adjective /frəˈtɜːrnəl/

fraternal

fraternal
Meaning
Relating to brothers or brotherhood; friendly and supportive.
Example
The two nations maintain a fraternal relationship.
Las dos naciones mantienen una relación fraternal.
C1 adjective /ˈfaɪə.ri/

Fiery

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

firewall

cortafuegos
Meaning
A network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
Example
A firewall protects networks from cyber-attacks.
Un cortafuegos protege las redes de ciberataques.
C1 adjective /ˈfeɪl.seɪf/

fail-safe

antifallo
Meaning
designed to prevent failure or accidents; guaranteed to work correctly
Example
The engineers installed a fail-safe mechanism in the nuclear plant.
Los ingenieros instalaron un mecanismo antifallo en la planta nuclear.
C1 noun /fəˈrɒs.ə.ti/

ferocity

ferocidad, violencia, intensidad
Meaning
The state or quality of being ferocious; extreme fierceness or violence.
Example
The storm's ferocity was devastating.
La ferocidad de la tormenta fue devastadora.
C1 verb /ˈfʌmbəl/

fumble

torpeza
Meaning
to handle something clumsily or to make mistakes while doing something
Example
He fumbled with the keys and dropped them on the floor.
Él torpedeó con las llaves y las dejó caer al suelo.
C1 noun /ˌfɜːrmənˈteɪʃən/

fermentation

fermentación, cambio químico por levaduras o bacterias
Meaning
a chemical process by which substances like sugar are converted into alcohol or acids using microorganisms
Example
The fermentation of grapes produces wine.
La fermentación de uvas produce vino.
C1 adjective /flæmˈbɔɪənt/

flamboyant

llamativo, colorido o confiado
Meaning
showy, strikingly bold or colorful; confident and lively
Example
His flamboyant style drew everyone's attention at the party.
Su estilo llamativo atrajo la atención de todos en la fiesta.
C1 verb /fɔːrˈɡoʊ/

forego

renunciar
Meaning
to decide not to do or have something pleasant or valuable
Example
She decided to forego dessert to maintain her diet.
Ella decidió renunciar al postre para mantener su dieta.
C1 noun /faɪˈnælɪti/

finality

finalidad
Meaning
the quality of being final or irreversible; a sense of conclusiveness
Example
The judge's decision gave the case a sense of finality.
La decisión del juez le dio al caso una sensación de finalidad.
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 /flæt fɪʃ/

Flat fish

pez plano
Meaning
a type of fish with a flattened body that lives on the sea floor
Example
Flat fish like sole and flounder are excellent for grilling.
Los peces planos como el lenguado y el platija son excelentes para asar a la parrilla.
C1 verb /flaʊt/

flout

despreciar
Meaning
To openly disregard or show contempt for a rule or law.
Example
The company was fined for flouting environmental regulations.
La empresa fue multada por ignorar las regulaciones ambientales.
C1 adjective /ˈfænsiːd/

fancied

imaginado, deseado
Meaning
imagined, desired, or believed without evidence
Example
He is a fancied suitor in the eyes of the young lady.
Él es un pretendiente imaginado a los ojos de la joven.
C1 noun /ˈfænsiər/

fancier

aficionado
Meaning
a person who has a special interest in a particular thing or activity, especially animals or hobbies
Example
He is a fancier of rare birds.
Él es un aficionado a las aves raras.
C1 adjective /fəˈnætɪk/

Fanatic

fanático
Meaning
extremely passionate about something; showing excessive enthusiasm or devotion
Example
He is a fanatic supporter of his football team.
Él es un fanático seguidor de su equipo de fútbol.
C1 noun /ˈfɛlən/

felon

delincuente
Meaning
a person who has committed a serious crime
Example
The felon was sentenced to ten years in prison.
El delincuente fue sentenciado a diez años de prisión.
C1 noun /fɪkˈseɪ.ʃən/

fixation

fijación o interés obsesivo en algo o alguien
Meaning
An obsessive interest in or feeling about someone or something.
Example
His fixation on perfectionism delayed project completion.
Su fijación con el perfeccionismo retrasó la finalización del proyecto.
C1 noun /ˈfʌŋɡəs/

fungus

hongo
Meaning
a spore-producing organism feeding on organic matter, including molds, yeast, and mushrooms
Example
A strange fungus was growing on the old tree.
Un extraño hongo estaba creciendo en el viejo árbol.
C1 adjective fæsˈtɪd.i.əs

fastidious

meticuloso
Meaning
Very attentive to and concerned about accuracy and detail.
Example
She is fastidious about maintaining cleanliness.
Ella es meticulosa al mantener la limpieza.
C1 noun /ˈfeɪvərɪtɪzəm/

favoritism

favoritismo
Meaning
the practice of giving unfair preferential treatment to one person or group
Example
The manager was accused of favoritism towards certain employees.
El gerente fue acusado de favoritismo hacia ciertos empleados.
C1 noun ˈfɔː.saɪt

foresight

previsión
Meaning
The ability to predict or the action of predicting what will happen or be needed in the future.
Example
His foresight helped the company avoid financial losses.
Su previsión ayudó a la empresa a evitar pérdidas financieras.
C1 verb /fɔːrˈtɛl/

foretell

predecir
Meaning
to predict or announce something before it happens
Example
The old man claimed he could foretell the future.
El anciano afirmó que podía predecir el futuro.
C1 noun /fɪˈdɛl.ɪ.ti/

fidelity

fidelidad
Meaning
Faithfulness to a person, cause, or belief, demonstrated by continuing loyalty and support.
Example
A dog's fidelity to its owner is unmatched.
La fidelidad de un perro hacia su dueño es incomparable.
C1 adjective /ˈfrɛn.zid/

frenzied

frenético
Meaning
Wildly excited or uncontrolled
Example
The frenzied crowd cheered as the band took the stage.
La multitud frenética vitoreó cuando la banda subió al escenario.
C1 noun /ˈfɔːrsəm/

foursome

cuatro personas o cosas
Meaning
a group of four people or things, especially in games or social activities
Example
The foursome enjoyed a game of golf together.
El cuarteto disfrutó de un juego de golf juntos.
C1 noun ˈfɜːr.vɚ

fervor

pasión o entusiasmo
Meaning
Strong passion or enthusiasm for something.
Example
He spoke with great fervor about his vision for the company.
Habló con gran fervor sobre su visión para la empresa.
C1 noun /ˈfɔː.nə/

fauna

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

feudal

feudal
Meaning
relating to the system of feudalism, a medieval social system based on land ownership and obligations
Example
The castle is a remnant of the feudal era.
El castillo es un vestigio de la era feudal.
C1 noun /frəˈdʒɪl.ɪ.ti/

fragility

fragilidad
Meaning
The quality of being fragile; delicateness.
Example
The cornea's fragility increases with rubbing.
La fragilidad de la córnea aumenta con el frotamiento.
C1 noun /ˈfen.jʊ.griːk/

Fenugreek

fenogreco
Meaning
an herb whose seeds and leaves are used as a spice in cooking
Example
Fenugreek seeds have a slightly bitter taste and are commonly used in Indian cuisine.
Las semillas de fenogreco tienen un sabor ligeramente amargo y se utilizan comúnmente en la cocina india.
C1 verb /flɔːnt/

flaunt

presumir
Meaning
to show off something proudly, often to attract attention
Example
She likes to flaunt her new jewelry at parties.
A ella le gusta presumir sus nuevas joyas en las fiestas.
C1 verb /ˈfæbrɪkeɪt/

fabricate

fabricar
Meaning
to invent or concoct something, often with the intent to deceive; or to construct or manufacture
Example
The witness fabricated his testimony to protect himself.
El testigo fabricó su testimonio para protegerse.
C1 adjective /ˈflɪmzi/

flimsy

débil
Meaning
weak, fragile, or lacking in strength; not convincing
Example
The chair was too flimsy to support his weight.
La silla era demasiado débil para soportar su peso.
C1 noun ˌfɜːr.tɪ.laɪˈzeɪ.ʃən

fertilization

fertilización
Meaning
The process of adding nutrients to soil to increase crop productivity.
Example
Organic fertilization enhances soil health.
La fertilización orgánica mejora la salud del suelo.
C1 adjective /frɔːt/

fraught

lleno
Meaning
Filled with or likely to result in something undesirable.
Example
The negotiations were fraught with tension and uncertainty.
Las negociaciones estuvieron llenas de tensión e incertidumbre.
C1 noun /ˈfɔːrdʒər/

forger

falsificador
Meaning
a person who makes fake documents, artworks, or signatures
Example
The police arrested a forger who had been selling counterfeit paintings.
La policía arrestó a un falsificador que había estado vendiendo pinturas falsas.
C1 noun/verb /fliːs/

fleece

lana de oveja
Meaning
The woolly covering of a sheep; as a verb, to swindle or cheat someone.
Example
The farmer sheared the sheep’s fleece carefully.
El granjero esquiló el vellón de la oveja cuidadosamente.
C1 noun /ˈfjuː.də.lɪ.zəm/

feudalism

feudalismo
Meaning
the social system in medieval Europe in which people worked and fought for nobles who gave them protection and land in return
Example
Feudalism shaped the political structure of medieval Europe.
El feudalismo moldeó la estructura política de la Europa medieval.
C1 noun ˌfɔːtɪfɪˈkeɪʃn

fortification

fortificación
Meaning
A defensive wall or other reinforcement built to strengthen a place against attack.
Example
The fortifications protected the city.
Las fortificaciones protegieron la ciudad.
C1 noun ˈfæl.ə.si

fallacy

falacia, error, razonamiento falso
Meaning
False belief, misconception, false reasoning.
Example
The idea that success comes easy is a fallacy.
La idea de que el éxito viene fácil es una falacia.
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.
C1 noun /fɑːrs/

farce

farsa
Meaning
a comic dramatic work using buffoonery and horseplay, or a ridiculous situation
Example
The meeting turned into a complete farce with everyone arguing.
La reunión se convirtió en una farsa completa con todos discutiendo.
C1 verb /ˈflʌtər/

flutter

aletear / temblar
Meaning
to move or flap quickly and lightly; to beat or wave with small rapid motions
Example
The butterfly began to flutter its wings in the sunlight.
La mariposa comenzó a aletear sus alas en la luz del sol.
C1 noun /ˈfjʊərɔːr/

furor

alboroto
Meaning
An outbreak of public anger or excitement.
Example
The politician's remarks created a furor in the media.
Los comentarios del político crearon un furor en los medios.
C1 noun /fiːnd/

fiend

demonio, persona malvada
Meaning
an evil spirit or demon; a wicked or cruel person; someone obsessed with a particular thing
Example
He is a real fiend when it comes to solving puzzles.
Él es un verdadero demonio cuando se trata de resolver rompecabezas.
C1 verb ˈflʌk.tʃu.eɪt

fluctuate

fluctuar
Meaning
To regularly increase or decrease.
Example
Stock prices fluctuate due to market conditions.
Los precios de las acciones fluctúan debido a las condiciones del mercado.
C1 verb /ˈflaʊndər/

flounder

tambalear
Meaning
To struggle or stagger clumsily; to experience difficulty or confusion.
Example
He floundered in the interview when asked difficult questions.
Él se tambaleó en la entrevista cuando le hicieron preguntas difíciles.
C1 adjective /ˈfuːlpruːf/

foolproof

a prueba de tontos
Meaning
Designed to be very easy to use or understand, leaving no possibility of failure or error.
Example
The new software has a foolproof installation process.
El nuevo software tiene un proceso de instalación a prueba de tontos.
C1 noun, verb /ˈfɜːrloʊ/

furlough

licencia temporal
Meaning
temporary leave of absence from work, especially that granted to an employee or soldier
Example
Many workers were placed on furlough during the crisis.
Muchos trabajadores fueron puestos en furlough durante la crisis.
C1 verb /ˈfɜːr.tɪ.laɪz/

fertilize

fertilizar
Meaning
to make soil or land more fertile by adding substances
Example
Farmers fertilize the fields to increase crop yield.
Los agricultores fertilizan los campos para aumentar la cosecha.
C1 verb /ˈfɔːrtɪˌfaɪ/

fortify

fortificar
Meaning
To strengthen a place, person, or thing physically or mentally.
Example
They fortified the city walls to protect against invasion.
Fortificaron las murallas de la ciudad para protegerse contra la invasión.
C1 noun /fɔːrˈkloʊʒər/

foreclosure

embargo hipotecario
Meaning
The legal process by which a lender takes control of a property from a borrower who has failed to make payments.
Example
The family lost their home due to foreclosure after missing several mortgage payments.
La familia perdió su casa debido al embargo hipotecario después de no pagar varias cuotas de la hipoteca.
C1 noun /flʌks/

flux

flujo
Meaning
continuous change or movement; the rate of flow of something
Example
The company was in a state of constant flux during the reorganization.
La empresa estaba en un estado de flujo constante durante la reorganización.
C1 noun /ˈfiːtəs/

fetus

feto
Meaning
an unborn or unhatched offspring in the womb or egg
Example
The doctor explained the development of the fetus during pregnancy.
El doctor explicó el desarrollo del feto durante el embarazo.
C1 noun /ˈfoʊk.lɔːr/

folk-lore

folklore
Meaning
The traditional beliefs, customs, stories, songs, and practices of a community, passed down through generations.
Example
Bangladeshi folk-lore is rich with myths and legends.
El folklore mexicano está lleno de mitos y leyendas.
C1 noun, verb /fɔːrd/

ford

vado
Meaning
A shallow place in a river where one can cross; to cross a river at such a place.
Example
The travelers decided to ford the river at dawn.
Los viajeros decidieron cruzar el río por un vado al amanecer.
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 /foʊ/

foe

enemigo
Meaning
an enemy or opponent
Example
The knight fought bravely against his foe.
El caballero luchó valientemente contra su enemigo.
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 /fiːt/

feat

hazaña
Meaning
an achievement that requires great courage, skill, or strength
Example
Climbing Mount Everest was a remarkable feat.
Escalar el monte Everest fue una hazaña notable.
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 noun /ˈfɔːrˌfɑːðər/

forefather

antepasado
Meaning
an ancestor, especially one who was part of an earlier generation of a family or nation
Example
Our forefathers fought for independence.
Nuestros antepasados lucharon por la independencia.
C1 adjective /ˈfruːt.ləs/

Fruitless

infructuoso; inútil; fútil;
Meaning
unsuccessful; futile; pointless;
Example
After hours of searching, their efforts proved fruitless.
Después de horas de búsqueda, sus esfuerzos resultaron infructuosos.
C1 verb/noun ˈfæð.əm

fathom

entender
Meaning
To understand after much thought; to measure the depth of water; to comprehend.
Example
It is difficult to fathom the depths of the ocean.
Es difícil entender las profundidades del océano.
C1 noun /ˈfren.zi/

Frenzy

frenesí
Meaning
a state or period of uncontrolled excitement or wild behavior; intense activity
Example
The announcement of the sale created a shopping frenzy at the mall.
El anuncio de la venta creó una locura de compras en el centro comercial.
C1 noun /fɔːn/

Fawn

cervatillo
Meaning
a young deer; a light yellowish-brown color
Example
The mother deer protects her fawn from predators.
La cierva protege a su cervatillo de los depredadores.
C1 noun /ˈfrek.əl/

Freckle

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