forensic
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C1 adjective/noun /fəˈrɛns.ɪk/

forensic

Análisis científico aplicado a asuntos criminales o legales
Meaning
Scientific analysis applied to criminal or legal matters
Example
Forensic experts analyze cybercrimes using advanced tools.
Los expertos forenses analizan los delitos cibernéticos utilizando herramientas avanzadas.
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 noun/verb ˈfɒr.ɪdʒ

forage

forraje, buscar comida
Meaning
Food for horses and cattle, especially dried hay or feed; to search for food.
Example
Animals forage for food during the winter months.
Los animales forrajean para buscar comida durante los meses de invierno.
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 /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 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 /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 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 /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 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 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 /ˌfæb.rɪˈkeɪ.ʃən/

fabrication

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

feasible

factible
Meaning
possible to do easily or conveniently; practical and workable
Example
It is feasible to complete the project within two months.
Es factible completar el proyecto dentro de dos meses.
C1 noun /ˈfɔːrˌrʌnər/

forerunner

precursor
Meaning
A person or thing that comes before another; a predecessor or harbinger.
Example
The Wright brothers were the forerunners of modern aviation.
Los hermanos Wright fueron los precursores de la aviación moderna.
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 noun ˌfræɡ.mənˈteɪ.ʃən

fragmentation

fragmentación
Meaning
The process or state of breaking or being broken into fragments.
Example
Habitat fragmentation threatens many species.
La fragmentación del hábitat amenaza a muchas especies.
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 /fɪˈnænʃɪər/

financier

financista
Meaning
a person who manages large amounts of money or investments
Example
The financier advised the company on its investments.
El financista asesoró a la empresa sobre sus inversiones.
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 verb /feɪn/

feign

fingir, simular
Meaning
to pretend or fake; to give a false appearance of
Example
She feigned illness to avoid going to work.
Ella fingió estar enferma para evitar ir a trabajar.
C1 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 /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 adjective /fəˈnætɪkəl/

fanatical

fanático
Meaning
showing extreme enthusiasm or obsession
Example
She has a fanatical interest in collecting vintage stamps.
Ella tiene un interés fanático en coleccionar sellos antiguos.
C1 noun /ˈfræk.tʃər/

Fracture

fractura; rotura de hueso
Meaning
the cracking or breaking of a hard object or material; a break in a bone
Example
The doctor confirmed that he had a hairline fracture in his wrist.
El doctor confirmó que tenía una fractura en la muñeca.
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 /ˈfʊtˌnoʊt/

foot-note

nota al pie
Meaning
A note of reference, explanation, or comment placed at the bottom of a page.
Example
The author included a foot-note to explain the historical context.
El autor incluyó una nota al pie para explicar el contexto histórico.
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 adjective /fərˈlɔːrn/

forlorn

desamparado, triste
Meaning
extremely sad, lonely, or abandoned
Example
The abandoned puppy looked so forlorn in the rain.
El cachorro abandonado se veía tan triste bajo la lluvia.
C1 noun /ˈfɔːrɡraʊnd/

foreground

primer plano
Meaning
the part of a scene that is nearest to and in front of the viewer
Example
The flowers in the foreground brightened the picture.
Las flores en el primer plano iluminaron la imagen.
C1 verb /ˈfɔːlsɪfaɪ/

falsify

falsificar
Meaning
to make something false or to misrepresent
Example
He tried to falsify the documents to avoid taxes.
Él trató de falsificar los documentos para evitar impuestos.
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 adjective /ˈfɔːrmətɪv/

formative

formativo
Meaning
Having a lasting influence on a person's development or character.
Example
Childhood is often described as a formative stage in life.
La infancia a menudo se describe como una etapa formativa en la vida.
C1 adjective /ˈfɛrəl/

feral

salvaje
Meaning
existing in a wild or untamed state; not domesticated
Example
The feral cat roamed the streets at night.
El gato salvaje rondaba por las calles por la noche.
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 /ˈfɔːls.hʊd/

Falsehood

falsedad; mentira
Meaning
the state of being untrue; a lie
Example
The politician was caught spreading falsehoods about his opponent.
El político fue atrapado difundiendo falsedades sobre su oponente.
C1 adjective /ˈfræɡməntɪd/

fragmented

fragmentado, dividido, incompleto
Meaning
Having been broken into fragments; disjointed or incomplete.
Example
The information was fragmented and difficult to understand.
La información estaba fragmentada y era difícil de entender.
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 verb /ˈfɔːrfɪt/

forfeit

perder, renunciar como penalización
Meaning
to lose or give up something, usually as a penalty for wrongdoing
Example
He had to forfeit the match after breaking the rules.
Tuvo que perder el partido después de romper las reglas.
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 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 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 adjective /fəˈroʊ.ʃəs/

Ferocious

feroz, salvaje, cruel
Meaning
savagely fierce, cruel, or violent; extremely aggressive
Example
The ferocious storm destroyed many houses in the coastal area.
La feroz tormenta destruyó muchas casas en la zona costera.
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 noun/adjective /fɔːrˈboʊdɪŋ/

foreboding

presagio ominoso
Meaning
A feeling that something bad will happen; ominous.
Example
She felt a deep sense of foreboding as she entered the abandoned house.
Ella sintió una profunda sensación de presagio ominoso al entrar en la casa abandonada.
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 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 verb /ˈfɔːltər/

falter

vacilar o perder fuerza o impulso
Meaning
to hesitate or lose strength or momentum
Example
Her voice faltered as she delivered the speech.
Su voz vaciló mientras pronunciaba el discurso.
C1 noun /ˈflæn.əl/

Flannel

flanela
Meaning
a soft woven fabric, typically made of wool or cotton and slightly milled and raised
Example
He wore a warm flannel shirt in winter.
Él usó una camisa de flanela cálida en invierno.
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 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 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 /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 /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 adjective /ˈfɪk.əl/

Fickle

inconstante; volátil; cambiante;
Meaning
changeable; inconstant; liable to sudden unpredictable change
Example
His fickle nature made it hard to trust his promises.
Su naturaleza inconstante hizo que fuera difícil confiar en sus promesas.
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 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 /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, 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 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 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 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 /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 /fɪlθ/

filth

suciedad
Meaning
dirty or disgusting matter; moral corruption
Example
The streets were full of filth after the storm.
Las calles estaban llenas de suciedad después de la tormenta.
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 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 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 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 ˌfiː.zəˈbɪl.ə.ti

feasibility

viabilidad
Meaning
The state or degree of being easily or conveniently done; possibility.
Example
The company conducted a feasibility study before launching the project.
La empresa realizó un estudio de viabilidad antes de lanzar el proyecto.
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 noun /ˈfɛtɪʃ/

fetish

devoción excesiva o irracional
Meaning
an excessive or irrational devotion to something
Example
He has a fetish for collecting rare stamps.
Él tiene una fijación por coleccionar sellos raros.
C1 noun /frɪndʒ/

fringe

borde decorativo / orilla
Meaning
A decorative border of threads; the outer edge or margin of something.
Example
The festival had a fringe of small independent performances.
El festival tenía un borde de pequeñas actuaciones independientes.
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 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 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 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 /ˈfruː.ɡəl/

Frugal

ahorrativo; económico;
Meaning
economical; thrifty;
Example
She is very frugal and saves money by buying only necessary items.
Ella es muy ahorrativa y ahorra dinero comprando solo lo necesario.
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 adjective, adverb (informal, vulgar) /ˈfʌkɪŋ/

fucking

maldito (palabra vulgar para énfasis)
Meaning
used for emphasis, often expressing anger or frustration (vulgar slang)
Example
It was a fucking disaster!
¡Fue un maldito desastre!
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 /fɪˈnɑːleɪ/

finale

final
Meaning
the last part or conclusion of a performance, event, or series
Example
The concert ended with a spectacular finale.
El concierto terminó con un espectacular final.
C1 verb /fɔːrˈʃædoʊ/

foreshadow

presagiar
Meaning
To indicate or suggest something that will happen in the future
Example
Dark clouds foreshadowed an approaching storm.
Las nubes oscuras presagiaron una tormenta inminente.
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 verb /fret/

fret

preocuparse
Meaning
to worry or be anxious; to be troubled
Example
Don't fret about the exam results.
No te preocupes por los resultados del examen.
C1 adjective ˈfjuː.taɪl

futile

fútil
Meaning
Incapable of producing any useful result; pointless.
Example
His attempts to change the situation were futile.
Sus intentos de cambiar la situación fueron inútiles.
C1 adjective /ˈfiːlaɪn/

feline

relacionado con los gatos
Meaning
relating to or characteristic of cats
Example
Her movements were graceful and almost feline in their elegance.
Sus movimientos eran gráciles y casi felinos en su elegancia.
C1 noun/adjective ˈflɛdʒ.lɪŋ

fledgling

principiante, inexperto, recién establecido
Meaning
New, inexperienced, newly established.
Example
The fledgling startup needs investment.
La empresa principiante necesita inversión.
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 /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 noun/verb /freɪ/

fray

pelea, desgastarse
Meaning
As a noun, a fight or heated dispute; as a verb, to unravel or wear out through friction.
Example
He tried to stay calm, but his nerves began to fray during the argument.
Trató de mantenerse calmado, pero sus nervios empezaron a desgastarse durante la discusión.
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 /fruˈɪʃən/

fruition

cumplimiento
Meaning
The realization or fulfillment of a plan, project, or desire.
Example
Her dream of becoming a doctor finally came to fruition.
El sueño de convertirse en doctora finalmente se hizo realidad.
C1 noun /ˈfɛərˌɡraʊndz/

fairgrounds

terreno de feria
Meaning
A designated area where fairs, exhibitions, and amusement events are held
Example
The town set up rides and stalls at the fairgrounds for the annual festival.
El pueblo montó atracciones y puestos en el terreno de feria para el festival anual.
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 /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 /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 /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 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 /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 verb /fɔːrˈkloʊz/

foreclose

embargar
Meaning
to take possession of a property due to the owner's failure to keep up mortgage payments
Example
The bank decided to foreclose on the property after months of missed payments.
El banco decidió embargar la propiedad después de meses de pagos perdidos.
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 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 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 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 adjective /ˈfɔːrsəbl/

forcible

forzoso
Meaning
Done by force; using physical strength or power.
Example
The police made a forcible entry into the house.
La policía hizo una entrada forzosa en la casa.
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 /ˈfæm.ɪn/

Famine

hambruna
Meaning
extreme scarcity of food; a period when food is extremely scarce
Example
The severe drought led to widespread famine in the region.
La grave sequía provocó una hambruna generalizada en la región.
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 /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 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 noun /ˈfɔːrˌθɔːt/

forethought

previsión
Meaning
careful consideration of what will be necessary or may happen in the future
Example
With a little forethought, we could have avoided the problem.
Con un poco de previsión, podríamos haber evitado el problema.
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 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 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 noun /ˈfɔːrˌbɛər/

forebear

antepasado
Meaning
An ancestor, especially one who lived a long time ago.
Example
He often speaks of his forebears with great respect.
Él habla a menudo de sus antepasados con mucho respeto.
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 /ˈflæɡɪŋ/

flagging

decaer, agotarse o perder entusiasmo
Meaning
becoming tired, weaker, or less enthusiastic
Example
After hours of work, his energy was flagging.
Después de horas de trabajo, su energía estaba disminuyendo.
C1 noun /fjuːd/

feud

disputa, enemistad
Meaning
a prolonged and bitter quarrel or conflict, often between families or groups
Example
The two families have been in a feud for generations.
Las dos familias han estado en una disputa durante generaciones.
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.