freethinker
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C2 noun /ˈfriːˌθɪŋkər/

freethinker

librepensador
Meaning
A person who forms opinions based on reason and independent thought rather than tradition or authority.
Example
Voltaire was considered a great freethinker of his time.
Voltaire fue considerado un gran librepensador de su tiempo.
C2 adjective /ˈfɪt.fəl/

fitful

intermitente
Meaning
occurring in irregular bursts; not continuous or steady
Example
He had a fitful sleep due to the storm.
Él tuvo un sueño intermitente debido a la tormenta.
C2 noun /feɪnt/

feint

finta, movimiento engañoso
Meaning
a deceptive or pretended movement, especially in fighting or sports
Example
The boxer made a feint to the left before striking to the right.
El boxeador hizo una finta hacia la izquierda antes de golpear hacia la derecha.
C2 adjective /ˈfjuːzəbl/

fusible

fundible
Meaning
Capable of being melted or fused.
Example
The engineer used a fusible alloy in the experiment.
El ingeniero usó una aleación fundible en el experimento.
C2 adjective /ˈfrɪski/

Frisky

vivaz; energético; juguetón; travieso
Meaning
lively; energetic; playful; mischievous
Example
The frisky puppy ran around the garden playfully.
El cachorro juguetón corrió alrededor del jardín de manera juguetona.
C2 adjective /fjuːˈɡeɪʃəs/

fugacious

fugaz
Meaning
Lasting only a short time; fleeting or ephemeral.
Example
Youth is beautiful but fugacious.
La juventud es hermosa pero fugaz.
C2 adjective /ˈfrɛtfəl/

fretful

inquieto
Meaning
Feeling or showing distress or irritation.
Example
The baby was fretful all night and could not sleep.
El bebé estuvo inquieto toda la noche y no pudo dormir.
C2 verb /fɪltʃ/

filch

robar
Meaning
to steal something in a sneaky or petty way
Example
He tried to filch a candy bar from the shop.
Él intentó robar una barra de caramelo de la tienda.
C2 noun /foʊl fʊt/

Foal-foot

flor de pezuña de caballo
Meaning
a yellow flowering plant with leaves shaped like a horse's hoof, also known as coltsfoot
Example
The foal-foot plant grows wild in many meadows and is often the first flower to bloom in spring.
La planta de pezuña de caballo crece silvestre en muchos prados y a menudo es la primera flor en florecer en primavera.
C2 adjective /ˈfiːbəlˌmaɪndɪd/

feebleminded

tonto o de mente débil
Meaning
lacking intelligence or mental capacity; foolish or weak-minded
Example
The feebleminded man struggled to understand basic instructions.
El hombre de mente débil luchaba por entender instrucciones básicas.
C2 noun /flæks/

flax

lino
Meaning
a plant whose fibers are used to make linen and whose seeds are edible
Example
Flax is often used in making linen fabrics.
El lino se usa a menudo para hacer telas de lino.
C2 adjective /ˈfɪliəl/

filial

relacionado con un hijo o hija; mostrar respeto o afecto hacia los padres
Meaning
relating to a son or daughter; showing respect or affection toward parents
Example
He showed filial respect by caring for his aging parents.
Él mostró respeto filial cuidando a sus padres ancianos.
C2 adjective /fjuːˈnɪəriəl/

funereal

funerario
Meaning
having the mournful, somber character of a funeral
Example
The room was filled with a funereal silence after the announcement.
La habitación se llenó de un silencio funerario después del anuncio.
C2 adjective /fɪˈdjuːʃəl/

fiducial

fiducial, de referencia
Meaning
based on trust or confidence; serving as a standard of reference
Example
The fiducial point on the map ensures accurate measurements.
El punto fiducial en el mapa asegura mediciones precisas.
C2 noun /ˈfaɪnəri/

finery

ropa o adornos lujosos
Meaning
expensive or elaborate clothes, decorations, or accessories
Example
She attended the party in her finest finery.
Ella asistió a la fiesta con su mejor vestimenta.
C2 noun /ˈfɔɪbəl/

foible

pequeña debilidad
Meaning
A minor weakness or eccentricity in someone's character.
Example
She loved him despite his little foibles.
A pesar de sus pequeñas debilidades, ella lo quería.
C2 noun /ˈfʌŋkʃəˌnɛri/

functionary

funcionario
Meaning
a person who has official duties in an organization, especially one with little authority
Example
The minor functionary was responsible for filing reports.
El funcionario menor era responsable de presentar los informes.
C2 adjective /ˈfuːlˌhɑːrdi/

foolhardy

temerario
Meaning
Recklessly bold or rash; taking foolish risks.
Example
It was foolhardy of him to climb the mountain without proper gear.
Fue temerario de su parte escalar la montaña sin el equipo adecuado.
C2 verb /ˈflʌməks/

flummox

confundir
Meaning
To confuse or bewilder someone completely.
Example
The complicated puzzle flummoxed the students.
El complicado rompecabezas confundió a los estudiantes.
C2 noun ˌfjuːmɪˈɡeɪʃən

fumigation

fumigación
Meaning
The practice of disinfecting or purifying an area using gas or smoke.
Example
Fumigation is an effective method to control pest infestations.
La fumigación es un método efectivo para controlar las infestaciones de plagas.
C2 noun /ˈfeɪ.tə.lɪ.zəm/

fatalism

fatalismo
Meaning
the belief that all events are predetermined and inevitable
Example
He embraced fatalism, believing that nothing he did could change his destiny.
Él abrazó el fatalismo, creyendo que nada de lo que hiciera podría cambiar su destino.
C2 adjective /ˈfluːtɪd/

fluted

ranurado
Meaning
having grooves or ridges, often for decoration
Example
The vase had a beautiful fluted design around the rim.
El jarrón tenía un hermoso diseño ranurado alrededor del borde.
C2 verb /ˌfɔːrˈrʌn/

forerun

predecer
Meaning
To go before; to precede in time, place, or action.
Example
Dark clouds often forerun a storm.
Las nubes oscuras a menudo preceden una tormenta.
C2 verb /feɪz/

faze

perturbar
Meaning
to disturb or disconcert someone; to cause to feel unsettled
Example
She was not fazed by the unexpected question.
Ella no se perturbó por la pregunta inesperada.
C2 adjective /ˈfʌndʒəbl/

fungible

fungible
Meaning
interchangeable; able to replace or be replaced by another identical item
Example
In finance, money is considered a fungible asset.
En finanzas, el dinero se considera un activo fungible.
C2 adjective /ˈfræk.ʃəs/

Fractious

irritable; problemático; difícil de controlar
Meaning
irritable and quarrelsome; difficult to control; bad-tempered
Example
The fractious child refused to follow any of the teacher's instructions.
El niño fractioso se negó a seguir cualquiera de las instrucciones del maestro.
C2 noun /ˈfɪli/

filly

yegua joven
Meaning
a young female horse
Example
The filly ran swiftly across the meadow.
La potra corrió rápidamente por el campo.
C2 noun /ˈflætʃələns/

flatulence

acumulación de gas en el sistema digestivo
Meaning
the accumulation of gas in the digestive system; excessive gas in the stomach or intestines
Example
Eating beans can sometimes cause flatulence.
Comer frijoles a veces puede causar flatulencia.
C2 noun /fɔːrˈbɛrəns/

forbearance

tolerancia
Meaning
Patient self-control; restraint and tolerance, especially in difficult situations.
Example
She showed remarkable forbearance during the heated argument.
Ella mostró una notable tolerancia durante la acalorada discusión.
C2 verb /ˈfjuːmɪˌɡeɪt/

fumigate

fumigar
Meaning
to disinfect or purify an area by using chemical fumes
Example
They fumigated the warehouse to kill the insects.
Ellos fumigaron el almacén para matar los insectos.
C2 noun /ˌfɔːrɔːrdɪˈneɪʃən/

foreordination

preordenación
Meaning
the act of determining something in advance; predestination
Example
The doctrine of foreordination suggests that events are fixed by divine will.
La doctrina de la preordenación sugiere que los eventos están fijados por la voluntad divina.
C2 adjective /ˈflæb.i/

Flabby

blando y flojo; falta de firmeza o tono muscular; débil
Meaning
soft and loose; lacking firmness or muscle tone; weak
Example
His flabby arms showed he needed to exercise more.
Sus brazos flácidos mostraban que necesitaba hacer más ejercicio.
C2 noun /ˈfjʊr.ʌŋ.kəl/

Furuncle

forúnculo; bulto;
Meaning
a painful pus-filled bump under the skin caused by infected, inflamed hair follicles
Example
The doctor prescribed antibiotics to treat the painful furuncle on his neck.
El doctor recetó antibióticos para tratar el doloroso furúnculo en su cuello.
C2 adjective /ˈfraʊzi/

frowsy

desordenado
Meaning
Scruffy and neglected in appearance; musty or stale in smell.
Example
He wore a frowsy old jacket that smelled of damp.
Él llevaba una chaqueta desordenada y vieja que olía a humedad.
C2 noun, verb /ˈfɪlɪˌbʌstər/

filibuster

una táctica de retrasar la acción legislativa mediante discursos prolongados; usar tal táctica
Meaning
a tactic of delaying legislative action by prolonged speech; to use such a tactic
Example
The senator filibustered for hours to prevent the bill from passing.
El senador filibusteó durante horas para evitar que se aprobara el proyecto de ley.
C2 verb /foʊˈmɛnt/

foment

fomentar
Meaning
To instigate or stir up (an undesirable or violent sentiment or course of action).
Example
The rebel leader tried to foment unrest among the people.
El líder rebelde trató de fomentar el descontento entre la gente.
C2 noun /fækˈsɪmɪli/

facsimile

copia
Meaning
an exact copy or reproduction of a document
Example
He sent a facsimile of the contract to the client.
Envió una copia del contrato al cliente.
C2 noun /fləˈtɪlə/

flotilla

flotilla
Meaning
A small fleet of ships or boats operating together.
Example
A flotilla of fishing boats left the harbor at dawn.
Una flotilla de barcos pesqueros salió del puerto al amanecer.
C2 noun /ˈflɛkʃən/

flection

flexión
Meaning
The act of bending or the state of being bent, especially of a limb or joint.
Example
The doctor tested the patient's knee flection during the examination.
El doctor probó la flexión de la rodilla del paciente durante el examen.
C2 noun /ˈfɔːrkɔːrt/

forecourt

patio
Meaning
an open area in front of a large building, especially a petrol station or hotel
Example
The car was parked in the hotel forecourt.
El coche estaba estacionado en el patio del hotel.
C2 adjective /ˈfæsaɪl/

Facile

fácil; superficial; carente de profundidad
Meaning
easily achieved; superficial; lacking depth
Example
His facile explanation didn't address the real problem.
Su explicación fácil no abordó el problema real.
C2 adjective /ˈfiːtɪd/

foetid

hediondo
Meaning
having an offensive, unpleasant smell
Example
The foetid smell from the garbage made it hard to breathe.
El hedor del basurero hizo que fuera difícil respirar.
C2 adjective /ˈfɒksi/

foxy

astuto
Meaning
Clever, cunning, or attractive.
Example
He came up with a foxy plan to win the game.
Él ideó un plan astuto para ganar el juego.
C2 verb /frɪz/

frizz

encrespar el cabello o hacerlo desordenado
Meaning
to form into small, tight curls or cause hair to become fuzzy and tangled
Example
The humid weather caused her hair to frizz.
El clima húmedo hizo que su cabello se encrespara.
C2 noun /ˈfɜːrðərəns/

furtherance

avance
Meaning
The advancement or promotion of something.
Example
The new policy was introduced in furtherance of social justice.
La nueva política se introdujo en pro de la justicia social.
C2 adjective /ˈfækʃəs/

factious

faccionado
Meaning
causing disagreement or division within a group; inclined to form factions
Example
The debate became factious, splitting the committee into rival camps.
El debate se volvió faccioso, dividiendo al comité en campos rivales.
C2 adjective /ˈflʌməksd/

flummoxed

desconcertado
Meaning
Completely confused or bewildered.
Example
He looked flummoxed after hearing the strange question.
Él parecía desconcertado después de escuchar la extraña pregunta.
C2 adjective /fəˈlɪsɪtəs/

felicitous

apropiado, adecuado o placentero; marcado por buena suerte o felicidad
Meaning
well-chosen, appropriate, or pleasing; marked by good fortune or happiness
Example
She made a felicitous remark that lightened the mood.
Hizo un comentario apropiado que aligeró el ambiente.
C2 verb /fɔːrˈfɛnd/

forfend

proteger, defender, evitar
Meaning
to protect or defend against something undesirable; to prevent
Example
May good fortune forfend any danger from our journey.
Que la buena fortuna proteja contra cualquier peligro en nuestro viaje.
C2 verb /ˈfɒn.dəl/

fondle

acariciar
Meaning
To stroke or caress lovingly or gently.
Example
She fondled the kitten gently in her lap.
Ella acarició al gatito suavemente en su regazo.
C2 adjective /ˈfraɪəbl/

friable

frágil
Meaning
Easily crumbled or reduced to powder.
Example
The old brick wall was friable and broke apart at a touch.
La pared vieja de ladrillos era frágil y se rompió con solo tocarla.
C2 adjective /ˈfɜːr.vɪd/

Fervid

apasionado; intensamente entusiasta; ardiente de emoción
Meaning
passionate; intensely enthusiastic; burning with emotion
Example
She gave a fervid speech about environmental protection.
Ella dio un discurso fervido sobre la protección del medio ambiente.
C2 adjective /ˈfɛkləs/

feckless

inepto, irresponsable
Meaning
lacking initiative or strength of character; irresponsible
Example
His feckless attitude at work caused several missed deadlines.
Su actitud inepta en el trabajo causó varios plazos perdidos.
C2 adjective /ˈflɪpənt/

flippant

despectivo
Meaning
not showing a serious or respectful attitude
Example
His flippant remarks annoyed the teacher.
Sus comentarios despectivos molestaron al maestro.
C2 adverb /ˈfɔːrbi/

forby

además
Meaning
In addition; besides (archaic Scottish/English word).
Example
He is kind and generous, and wise forby.
Él es amable y generoso, y además sabio.
C2 adjective /ˈfɪnɪki/

finicky

difícil de complacer; muy particular en los detalles
Meaning
difficult to please; very particular about details
Example
He is so finicky about his food that he only eats organic vegetables.
Él es tan quisquilloso con su comida que solo come verduras orgánicas.
C2 noun /ˈfæn.feər/

fanfare

gran pompa, publicidad
Meaning
a short ceremonial tune or display of publicity to attract attention
Example
The new product was launched with much fanfare.
El nuevo producto fue lanzado con gran pompa.
C2 adjective /ˈfʌŋɡəs/

fungous

relacionado con hongo
Meaning
relating to or resembling a fungus
Example
The damp basement had a fungous smell.
El sótano húmedo tenía un olor relacionado con hongo.
C2 noun /ˈflæɡ ˌɒfɪsər/

flag-officer

oficial de bandera
Meaning
a senior naval officer entitled to fly a flag to mark the command
Example
The flag-officer reviewed the fleet before the ceremony.
El oficial de bandera revisó la flota antes de la ceremonia.
C2 noun /ˈfɪɡmənt/

figment

invención, imaginación
Meaning
something invented or imaginary; a fabrication of the mind
Example
The story of the haunted house is just a figment of her imagination.
La historia de la casa embrujada es solo un producto de su imaginación.
C2 adjective /ˈfæð.əm.ləs/

fathomless

incomprensible o insondable
Meaning
impossible to understand or measure; very deep
Example
The ocean seemed fathomless as it stretched to the horizon.
El océano parecía incomprensible cuando se extendía hasta el horizonte.
C2 adjective /ˈfraʊzi/

frowzy

desaliñado
Meaning
Unkempt, messy, or having a musty, unpleasant smell.
Example
He entered the room with a frowzy appearance after sleeping on the couch.
Entró en la habitación con una apariencia desaliñada después de dormir en el sofá.
C2 verb /fɔːrˈboʊd/

forebode

presagiar
Meaning
To predict or have a strong inner feeling of a future misfortune or evil.
Example
Dark clouds forebode a coming storm.
Las nubes oscuras presagian una tormenta venidera.
C2 noun /flɛk/

fleck

mancha pequeña
Meaning
a small spot or mark, often of a different color
Example
There was a fleck of paint on the floor.
Había una mancha de pintura en el suelo.
C2 verb /ˈfɛstər/

fester

empeorar, intensificarse
Meaning
to become worse or more intense, often through neglect or infection
Example
If grievances are ignored, they may fester into resentment.
Si se ignoran las quejas, pueden convertirse en resentimiento.
C2 verb /ˈfrʌktɪˌfaɪ/

fructify

fructificar
Meaning
To make fruitful or productive; to bear fruit.
Example
The new policies will help fructify the economic potential of the region.
Las nuevas políticas ayudarán a fructificar el potencial económico de la región.
C2 verb /fɪˈneɪɡəl/

finagle

obtener algo con astucia o engaño
Meaning
to obtain something by cleverness or trickery
Example
He finagled a free ticket by pretending to be a VIP guest.
Él consiguió un boleto gratis pretendiendo ser un invitado VIP.
C2 adjective /ˈflɒrɪd/

florid

excesivamente ornamentado / rojizo
Meaning
Having a red or flushed complexion; or excessively ornate and intricate.
Example
The speaker’s florid style made the lecture hard to follow.
El estilo excesivamente ornamentado del orador hizo que la conferencia fuera difícil de seguir.
C2 noun /fiːˈkʌndɪti/

fecundity

fecundidad, fertilidad
Meaning
the ability to produce an abundance of offspring or new growth; fertility
Example
The fecundity of the river delta supports diverse wildlife.
La fecundidad del delta del río apoya la diversidad de la vida silvestre.
C2 adjective /fəˈloʊniəs/

felonious

relacionado con un delito grave
Meaning
relating to or involved in serious criminal activity
Example
He was charged with felonious assault after the incident.
Fue acusado de asalto grave después del incidente.
C2 adjective /ˈfɒp.ɪʃ/

Foppish

excesivamente preocupado por la apariencia y la ropa; vanidoso con la vestimenta
Meaning
excessively concerned with one's appearance and clothes; vain about dress
Example
His foppish behavior and expensive clothes made him stand out.
Su comportamiento foppish y su ropa cara lo hacían destacar.
C2 noun /ˈfɜːrlɔːŋ/

furlong

unidad de distancia (220 yardas o aproximadamente 201 metros)
Meaning
a unit of distance equal to 220 yards or about 201 meters
Example
The horse ran a furlong before slowing down.
El caballo corrió un furlong antes de desacelerar.
C2 noun /ˌfrɪdʒɪˈdɛːriəm/

frigidarium

baño frío
Meaning
a large cold pool in ancient Roman baths used for cooling off after hot baths
Example
The ruins of the Roman frigidarium are still visible today.
Las ruinas del frigidarium romano todavía son visibles hoy en día.
C2 noun /frɒnd/

frond

hoja
Meaning
A large, divided leaf of a fern, palm, or similar plant.
Example
The fern's frond stretched gracefully over the garden path.
La hoja del helecho se estiró graciosamente sobre el camino del jardín.
C2 verb /ˈfrɪtər/

fritter

desperdiciar
Meaning
To waste time, money, or energy on trivial matters.
Example
He frittered away his savings on unnecessary gadgets.
Él desperdició sus ahorros en gadgets innecesarios.
C2 noun /foʊ ˈpɑː/

faux pas

desliz social
Meaning
a social blunder or mistake in etiquette
Example
He committed a major faux pas by forgetting her birthday.
Cometió un gran desliz social al olvidar su cumpleaños.
C2 noun /friːz/

frieze

friso
Meaning
a decorative horizontal band, often sculpted or painted, usually on a wall near the ceiling
Example
The frieze above the entrance depicts scenes from ancient mythology.
El friso sobre la entrada representa escenas de la mitología antigua.
C2 verb /fɔrˈswɛr/

forswear

renunciar
Meaning
to renounce or reject; to give up completely
Example
He forswore his old habits and started a new life.
Él renunció a sus viejos hábitos y empezó una nueva vida.
C2 adjective /ˈfrəʊərd/

froward

terco
Meaning
Difficult to deal with; contrary and disobedient.
Example
The teacher found the froward child hard to manage.
El maestro encontró al niño terco difícil de manejar.
C2 verb /fɔːrˈdʒʌdʒ/

forejudge

juzgar por adelantado
Meaning
To judge beforehand without adequate information.
Example
It is unfair to forejudge someone without knowing the facts.
Es injusto juzgar a alguien sin conocer los hechos.
C2 adjective /ˈfɔːnɪŋ/

fawning

adulador excesivo
Meaning
displaying exaggerated flattery or affection
Example
Her fawning compliments made everyone uncomfortable.
Sus adulaciones excesivas hicieron que todos se sintieran incómodos.
C2 noun /ˈfɔːrˌpiːk/

forepeak

camarote de proa
Meaning
The compartment in the forward part of a ship, often used for storage.
Example
The sailors stored extra ropes in the forepeak.
Los marineros guardaron cuerdas extra en el camarote de proa.
C2 adverb /ˌfɔːrθˈwɪθ/

Forthwith

inmediatamente; sin demora; al instante
Meaning
immediately; without delay; at once
Example
The manager ordered the employee to stop the unsafe practice forthwith.
El gerente ordenó al empleado detener la práctica peligrosa de inmediato.
C2 verb /ˈfɜːrbɪʃ/

furbish

pulir
Meaning
to polish, renovate, or give a fresh look to something
Example
The workers furbished the old sword until it gleamed like new.
Los trabajadores pulieron la antigua espada hasta que brilló como nueva.
C2 noun /ˈfriːˌmeɪsən/

freemason

francmasón miembro
Meaning
A member of an international fraternity known as Freemasonry, focused on moral and spiritual values.
Example
His grandfather was a respected freemason in the community.
Su abuelo era un respetado francmasón en la comunidad.
C2 adjective /fluːˈɛnʃəl/

fluential

influyente
Meaning
Having the power to influence or flowing freely (rare/archaic usage).
Example
The fluential speaker captivated the entire audience.
El orador influyente cautivó a toda la audiencia.
C2 noun /ˈfɜːrnəri/

fernery

fernería, lugar donde se cultivan helechos
Meaning
a place or greenhouse where ferns are cultivated
Example
The garden's fernery was full of exotic plants.
La jardinera estaba llena de plantas exóticas en la fernería.
C2 noun /ˌfjuːzɪˈleɪd/

fusillade

fuselaje
Meaning
A series of shots fired or missiles thrown all at the same time or in quick succession.
Example
The soldiers advanced under a fusillade of bullets.
Los soldados avanzaron bajo una fusilada de balas.
C2 adjective/noun /fɪˈduː.ʃi.er.i/

fiduciary

fiduciario
Meaning
Involving trust, especially with regard to the relationship between a trustee and a beneficiary.
Example
Banks have fiduciary duties towards their clients.
Los bancos tienen deberes fiduciarios hacia sus clientes.
C2 noun /ˈfɛndər/

fender

guardabarros
Meaning
a part of a vehicle that frames a wheel well to protect against mud or debris
Example
The car's fender was dented in the accident.
El fender del coche se abolló en el accidente.
C2 adjective/adverb /feɪn/

fain

gustosamente, con gusto
Meaning
gladly, willingly, or with pleasure
Example
I would fain help you if I had the time.
Si tuviera tiempo, con gusto te ayudaría.
C2 verb /ˈflædʒəˌleɪt/

flagellate

azotar o flagelar a alguien como una forma de castigo o auto-disciplina
Meaning
to whip or flog someone, either literally or as a form of punishment or self-discipline
Example
In history, some monks would flagellate themselves as penance.
En la historia, algunos monjes se flagelaban como penitencia.
C2 adjective /ˈfɛtɪd/

fetid

fétido, maloliente
Meaning
having a strong, unpleasant smell
Example
The fetid smell from the garbage was unbearable.
El olor fétido de la basura era insoportable.
C2 noun /ˌfoʊ.mənˈteɪ.ʃən/

fomentation

incitación, estimulación
Meaning
The action of instigating or stirring up; also the application of warm substances to the body to ease pain.
Example
His speech led to the fomentation of violence in the region.
Su discurso llevó a la fomentación de la violencia en la región.
C2 adjective /ˈfæl.oʊ/

fallow

barbecho
Meaning
Describing land that is left unplanted for a period to restore its fertility, allowing soil to recover nutrients and break pest and disease cycles.
Example
Farmers leave their fields fallow to restore soil fertility.
Los agricultores dejan sus campos en barbecho para restaurar la fertilidad del suelo.
C2 noun /ˈfiːæt/

fiat

decreto, mandato
Meaning
an official order or decree; authoritative command
Example
The new policy was enacted by royal fiat.
La nueva política fue implementada por un decreto real.
C2 noun /ˈflɪpənsi/

flippancy

falta de seriedad
Meaning
lack of seriousness; showing a disrespectful or trivial attitude
Example
His flippancy during the meeting offended his colleagues.
Su falta de seriedad durante la reunión ofendió a sus compañeros.
C2 noun /ˈfʊl.krəm/

fulcrum

punto de apoyo
Meaning
The point or support on which a lever pivots; a central or essential point of activity or support.
Example
The teacher became the fulcrum of change in the school.
La maestra se convirtió en el fúlcrum del cambio en la escuela.
C2 noun /ˈfɔːθ.raɪt.nəs/

forthrightness

franqueza
Meaning
The quality of being honest and straightforward; directness.
Example
Her forthrightness made her a respected journalist.
Su forthrightness la convirtió en una periodista respetada.
C2 verb /fɔɪst/

foist

imponer a la fuerza
Meaning
To impose something unwelcome or unnecessary on someone.
Example
He tried to foist his old books onto his friends.
Intentó imponer sus viejos libros a sus amigos.
C2 adjective /ˈfætʃuəs/

fatuous

tonto
Meaning
silly or foolish, especially in a self-satisfied way
Example
His fatuous comments during the meeting annoyed everyone.
Sus comentarios tontos durante la reunión molestaron a todos.
C2 noun /fiːf/

fief

un terreno de tierra otorgado bajo el sistema feudal; un dominio o área de control
Meaning
an estate of land held under the feudal system; a domain or area of control
Example
The knight was granted a fief by the lord for his service.
El caballero recibió un feudo del señor por su servicio.
C2 noun /fluː/

flue

conducto de humos
Meaning
A pipe or channel for smoke and waste gases produced by a fire, gas heater, or power station.
Example
The chimney flue needs to be cleaned regularly.
El conducto de humos de la chimenea necesita ser limpiado regularmente.
C2 noun /ˈfaɪər.brænd/

firebrand

persona revolucionaria
Meaning
a person who is passionate about a cause, often inciting change or action
Example
The activist was a true firebrand, inspiring everyone around him to join the protest.
El activista era un verdadero revolucionario, inspirando a todos a su alrededor para unirse a la protesta.
C2 noun /fɔːn/

faun

fauno (criatura mitológica)
Meaning
a mythological creature that is half human and half goat
Example
The sculpture depicted a playful faun dancing in the forest.
La escultura representaba un fauno juguetón bailando en el bosque.
C2 noun /ˈfɔːrʃɔːr/

foreshore

orilla
Meaning
The part of the shore between the high and low tide marks
Example
Children were playing on the foreshore, collecting shells.
Los niños estaban jugando en la orilla, recogiendo conchas.
C2 noun /fɪntʃ/

finch

pinzón (pájaro pequeño cantor)
Meaning
a small songbird with a short, stout bill
Example
A colorful finch perched on the branch singing sweetly.
Un colorido pinzón se posó en la rama cantando dulcemente.
C2 adjective /fəˈsiːʃəs/

facetious

humerístico
Meaning
Treating serious issues with deliberately inappropriate humor
Example
He was being facetious when he said he wanted to live on the moon.
Estaba siendo humerístico cuando dijo que quería vivir en la luna.
C2 adjective /ˈfiːbraɪl/

febrile

febril, excitado
Meaning
having or showing the symptoms of a fever; or highly excitable or agitated
Example
The patient was in a febrile state with high temperature.
El paciente estaba en un estado febril con alta temperatura.
C2 noun /ˈfræŋkɪnsɛns/

frankincense

incienso
Meaning
An aromatic gum resin used in incense and perfumes, often in religious ceremonies.
Example
The temple was filled with the sweet smell of burning frankincense.
El templo estaba lleno del dulce aroma del incienso quemado.
C2 adjective /ˈfluːviəl/

fluvial

fluvial
Meaning
relating to or found in a river
Example
The fluvial deposits indicated the presence of an ancient river system.
Los depósitos fluviales indicaron la presencia de un antiguo sistema fluvial.
C2 noun /ˈfɒpəri/

foppery

excesivo esnobismo
Meaning
Foolish or excessive concern with one's appearance or manners; pretentious behavior.
Example
His obsession with fashion was dismissed as mere foppery.
Su obsesión por la moda fue descartada como simple esnobismo.
C2 adjective /ˈfɛstəl/

festal

relacionado con un festival, festivo
Meaning
relating to a festival or celebration
Example
The hall was decorated in a festal manner for the wedding.
El salón estaba decorado de manera festiva para la boda.
C2 adjective fəˈleɪ.ʃəs

fallacious

falso
Meaning
Based on false reasoning or misleading arguments.
Example
His argument was based on fallacious reasoning.
Su argumento estaba basado en razonamientos falsos.
C2 adjective /ˈfiːkənd/

fecund

fértil, productivo
Meaning
producing or capable of producing an abundance of offspring or new growth; fertile
Example
The fecund soil produced a bountiful harvest this year.
El suelo fértil produjo una cosecha abundante este año.
C2 noun /ˈfʌstɪən/

fustian

discurso pomposo
Meaning
pompous or pretentious speech or writing; originally a type of thick cloth
Example
The politician's speech was filled with fustian and empty promises.
El discurso del político estaba lleno de fustián y promesas vacías.
C2 noun /ˈfetiʃ/

fetich

fétich
Meaning
an object believed to have magical powers or to be inhabited by a spirit
Example
The villagers treated the statue as a powerful fetich.
Los aldeanos trataban la estatua como un fétich poderoso.
C2 verb /fleɪl/

flail

agitar o mover algo de manera salvaje; forcejear
Meaning
to wave or swing something about wildly; to thrash about
Example
He flailed his arms to keep afloat in the water.
Él agitó sus brazos para mantenerse a flote en el agua.
C2 verb /ˈfʊl.mɪ.neɪt/

fulminate

protestar enérgicamente
Meaning
To express strong protest or criticism loudly and forcefully; to explode violently.
Example
The politician began to fulminate against corruption.
El político comenzó a protestar enérgicamente contra la corrupción.
C2 adjective /ˈfædɪʃ/

faddish

moda pasajera
Meaning
Following a temporary trend or fashion
Example
Wearing neon clothes was a faddish style in the 1980s.
Usar ropa neón era un estilo pasajero en los años 80.
C2 noun /ˈfʌriər/

furrier

peluquero
Meaning
A person who prepares or deals in furs.
Example
The furrier displayed fine coats in his shop.
El peluquero exhibió abrigos finos en su tienda.