fleece
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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.
B1 adjective /ˈfɒɡi/

foggy

neblinoso
Meaning
Full of or covered with fog; unclear or hazy.
Example
The mountain road was dangerous on the foggy morning.
La carretera de la montaña era peligrosa en la mañana neblinosa.
B2 noun/adjective /ˈfluːɪd/

fluid

líquido
Meaning
a substance that can flow easily, such as liquid or gas; smooth and adaptable
Example
The artist's fluid movements impressed the audience.
Los movimientos fluidos del artista impresionaron a la audiencia.
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.
C2 adjective /ˈfʊl.səm/

fulsome

elogios excesivos
Meaning
Excessively flattering or insincere; abundant or generous in amount.
Example
He offered fulsome praise to his boss.
Él ofreció elogios excesivos a su jefe.
C2 verb /frɪsk/

frisk

registrar
Meaning
To search a person by patting their clothing to check for concealed items.
Example
The security guard frisked the man at the entrance.
El guardia de seguridad registró al hombre en la entrada.
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.
C2 noun /ˈfɪlɪɡri/

filigree

trabajo ornamental delicado, generalmente de oro o plata
Meaning
delicate ornamental work of fine wire, usually of gold or silver
Example
The necklace was decorated with intricate gold filigree.
El collar estaba decorado con intrincados filigríes de oro.
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.
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 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.
A2 noun /ˈfɪt.nəs/

fitness

condición física
Meaning
The condition of being physically fit and healthy, or the quality of being suitable to fulfill a particular role or task.
Example
Fitness tests ensure vehicle safety.
Las pruebas de acondicionamiento físico aseguran la seguridad del vehículo.
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.
B2 noun /ˈfɜː.tɪ.laɪ.zər/

fertilizer

fertilizante
Meaning
a substance added to soil to make plants grow more successfully
Example
Farmers use fertilizer to increase crop production.
Los agricultores usan fertilizante para aumentar la producción de cultivos.
B1 adjective /ˈfəʊkəst/

focused

enfocado
Meaning
Directing a great deal of attention or effort toward a particular activity, situation, or person.
Example
Staying focused during work hours enhances productivity.
Mantenerse enfocado durante las horas de trabajo mejora la productividad.
C2 noun /feɪt/

fete

fiesta, celebración
Meaning
a celebration or festival, often in honor of someone
Example
The village held a grand fete to celebrate the harvest.
El pueblo celebró una gran fiesta para celebrar la cosecha.
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.
A2 noun/verb /fɛns/

fence

cerca
Meaning
a barrier, usually made of wood or wire, that surrounds an area; to enclose with a barrier
Example
They built a fence around the garden.
Ellos construyeron una cerca alrededor del jardín.
B2 noun /faɪˈnæn.ʃəl rɪˌspɒn.sɪˈbɪl.ə.ti/

financial responsibility

responsabilidad financiera
Meaning
The practice of managing money and other financial resources in a responsible and effective manner.
Example
Financial responsibility ensures long-term economic stability.
La responsabilidad financiera asegura la estabilidad económica a largo plazo.
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 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 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.
B2 adjective /ˈfeɪvərəbəl/

favorable

favorable
Meaning
expressing approval or support; advantageous
Example
The weather conditions were favorable for the outdoor event.
Las condiciones climáticas fueron favorables para el evento al aire libre.
A2 noun /fɪər/

Fear

miedo; temor
Meaning
an unpleasant emotion caused by the belief that someone or something is dangerous
Example
She overcame her fear of heights by taking rock climbing lessons.
Ella superó su miedo a las alturas tomando clases de escalada.
B2 noun /ˈflɒrɪst/

florist

florista
Meaning
A person who sells and arranges flowers.
Example
We bought a bouquet from the local florist.
Compramos un ramo en el florista local.
B2 noun /frɔːd/

Fraud

fraude
Meaning
wrongful or criminal deception intended to result in financial or personal gain
Example
The company was investigated for credit card fraud and money laundering.
La empresa fue investigada por fraude con tarjeta de crédito y lavado de dinero.
B1 adverb /ˈfɜːrstli/

firstly

primero
Meaning
used to introduce the first point or reason in a discussion or argument
Example
Firstly, we need to address the budget issue before proceeding.
Primero, necesitamos abordar el problema del presupuesto antes de continuar.
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.
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.
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.
B2 noun ˌfʌŋk.ʃəˈnæl.ə.ti

functionality

funcionalidad
Meaning
The quality of being functional; the ability to work or operate as intended.
Example
The new refrigerator has improved functionality.
El nuevo refrigerador ha mejorado la funcionalidad.
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 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 adjective + noun ˈfeɪvərəbəl klaɪˈmætɪk kənˈdɪʃənz

favorable climatic conditions

condiciones climáticas favorables
Meaning
Weather conditions that are suitable and beneficial for growth or development
Example
Winter offers favorable climatic conditions for farming.
El invierno ofrece condiciones climáticas favorables para la agricultura.
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 noun /ˈfɔːrˌseɪl/

foresail

vela de proa
Meaning
The principal sail set on the foremast of a sailing vessel.
Example
The crew adjusted the foresail to catch the wind.
La tripulación ajustó la vela de proa para capturar el viento.
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 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.
B1 adverb /ˈfʊli/

fully

completamente
Meaning
completely or entirely; to the fullest extent
Example
She is fully aware of the risks.
Ella está completamente consciente de los riesgos.
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.
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.
B2 noun /fɔːrt/

Fort

fuerte
Meaning
a strong building or group of buildings where soldiers live and defend
Example
The ancient fort stood on top of the hill for centuries.
El antiguo fuerte se erguía en la cima de la colina durante siglos.
A1 adverb /fɑːr/

far

lejos
Meaning
at, to, or by a great distance
Example
The school is far from my house.
La escuela está lejos de mi casa.
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 /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.
B2 adjective /ˈfruːt.fəl/

Fruitful

fructífero; beneficioso; exitoso;
Meaning
productive; beneficial; successful;
Example
Our discussion was very fruitful and led to many new ideas.
Nuestra discusión fue muy fructífera y condujo a muchas ideas nuevas.
A2 noun /ˈfɪʃ.ər.mən/

Fisherman

pescador
Meaning
a person who catches fish as a job or hobby
Example
The fisherman caught three large fish in the river today.
El pescador atrapó tres grandes peces en el río hoy.
B1 noun /fɒɡ/

Fog

niebla
Meaning
a thick cloud of tiny water droplets suspended in the atmosphere at or near the earth's surface that reduces visibility
Example
Dense fog covered the highway this morning.
La densa niebla cubrió la carretera esta mañana.
B2 noun /foʊm/

Foam

espuma
Meaning
a mass of small bubbles formed on or in liquid; frothy white mass
Example
The waves crashed against the rocks, creating white foam on the shore.
Las olas chocaron contra las rocas, creando espuma blanca en la orilla.
A1 adjective/noun /fɔːrθ/

fourth

cuarto
Meaning
Constituting number four in a sequence; coming after the third in position.
Example
He finished in fourth place in the race.
Terminó en el cuarto lugar en la carrera.
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 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 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 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.
A2 adjective /ˈfɔːrməl/

formal

formal
Meaning
done in accordance with rules of convention or etiquette; official or serious in nature
Example
He wore a formal suit to the wedding.
Él usó un traje formal para la boda.
A2 noun, verb /fuːl/

fool

tonto
Meaning
a silly or stupid person; to trick someone
Example
He felt like a fool after believing the prank.
Se sintió como un tonto después de creer en la broma.
B2 adjective /ˈfjʊə.ri.əs/

Furious

furioso; violento; enfurecido;
Meaning
extremely angry; violent; fierce;
Example
She was furious when she discovered the mistake.
Ella estaba furiosa cuando descubrió el error.
C2 verb /fleɪ/

flay

despojar/criticar severamente
Meaning
to strip off the skin of something or criticize severely
Example
The chef flayed the fish before cooking it.
El chef despojó el pescado antes de cocinarlo.
A2 noun /ˈfer.i.teɪl/

Fairy-tale

cuento de hadas
Meaning
a children's story about magical and imaginary beings and lands
Example
Children love listening to fairy-tales before bedtime.
A los niños les encanta escuchar cuentos de hadas antes de acostarse.
B2 adjective /fəˈɡɪv.ɪŋ/

Forgiving

perdonador
Meaning
ready and willing to forgive; merciful; lenient
Example
She has a forgiving nature and rarely holds grudges.
Ella tiene una naturaleza perdonadora y rara vez guarda rencor.
A2 adjective /ˈfaɪ.nəl/

Final

final; concluyente; decisivo; último
Meaning
last; concluding; decisive; ultimate
Example
This is the final exam of the semester.
Este es el examen final del semestre.
B2 noun /feɪt/

Fate

destino
Meaning
the development of events beyond a person's control, regarded as determined by a supernatural power
Example
Many people believe that fate determines the course of their lives.
Muchas personas creen que el destino determina el curso de sus vidas.
B2 adverb /ˈfræŋkli/

Frankly

francamente; abiertamente;
Meaning
honestly; openly; in a direct manner
Example
Frankly, I think this plan needs more consideration.
Francamente, creo que este plan necesita más consideración.
C1 verb, noun /ˈflʌstər/

fluster

confundir
Meaning
to make someone agitated or confused
Example
The unexpected question flustered him.
La pregunta inesperada lo confundió.
B1 adverb /ˈfeər.li/

Fairly

justamente; moderadamente; razonablemente
Meaning
in a just manner; moderately; reasonably
Example
The test was fairly easy, but some questions were challenging.
El examen fue bastante fácil, pero algunas preguntas fueron desafiantes.
B2 adverb /ˈfɜ:rmli/

Firmly

firmemente
Meaning
in a strong, steady, and unwavering manner
Example
She firmly believed in her decision.
Ella creía firmemente en su decisión.
A2 noun /ˈfɑː.loʊ.ɪŋ/

following

seguidores
Meaning
a group of supporters or people who admire something or someone
Example
The singer has a large following around the world.
El cantante tiene una gran cantidad de seguidores alrededor del mundo.
A2 noun /ˈfoʊldər/

folder

carpeta
Meaning
a container or directory used to store and organize papers or digital files
Example
I saved all the photos in a separate folder.
Guardé todas las fotos en una carpeta separada.
C2 adjective /ˈfrɒθi/

frothy

espumoso
Meaning
Full of or covered with small bubbles; light and insubstantial.
Example
She ordered a cup of frothy cappuccino.
Ella pidió una taza de capuchino espumoso.
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.
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.
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 /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.
B2 noun /ˈfriːdəm ˌfaɪtər/

freedom fighter

luchador por la libertad
Meaning
a person who takes part in an armed or political struggle to achieve freedom or independence for their people or country
Example
The freedom fighter dedicated his life to the liberation of his homeland.
El luchador por la libertad dedicó su vida a la liberación de su patria.
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.
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.
A2 noun /fiːld/

field

campo
Meaning
an area of open land, often used for farming, sports, or scientific study
Example
The children played football in the field.
Los niños jugaron al fútbol en el campo.
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.
A2 adjective /ˈfuː.lɪʃ/

Foolish

tonto; estúpido; ridículo
Meaning
lacking good sense or judgment; unwise; silly
Example
It was foolish of him to drive in such heavy rain.
Fue tonto de su parte conducir con tanta lluvia.
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.
A2 adjective, noun /ˈfeɪvərɪt/

favorite

favorito
Meaning
Preferred over all others; something or someone especially liked.
Example
Chocolate is my favorite ice cream flavor.
El chocolate es mi sabor de helado favorito.
B1 noun /ˌfɜːrst ˈeɪd/

first aid

primeros auxilios
Meaning
Immediate assistance given to a sick or injured person until full medical treatment is available
Example
He gave first aid to the injured cyclist before the ambulance arrived.
Él dio primeros auxilios al ciclista herido antes de que llegara la ambulancia.
B2 noun /fʌs/

Fuss

alboroto; agitación; preocupación innecesaria
Meaning
unnecessary worry or bother about something; agitated excitement over a trivial matter
Example
She made such a fuss about the small stain on her dress that everyone noticed.
Hizo tanto alboroto por la pequeña mancha en su vestido que todos lo notaron.
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.
B2 noun fəˈtɪl.ɪ.ti

fertility

fertilidad
Meaning
The quality of being fertile; fruitfulness.
Example
Fertility of the soil is crucial for farming.
La fertilidad del suelo es crucial para la agricultura.
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.
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 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 /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.
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.
B2 verb fəˈsɪl.ɪ.teɪt

facilitate

facilitar
Meaning
Make an action or process easier or more achievable; to help bring about.
Example
Good infrastructure facilitates economic growth.
La buena infraestructura facilita el crecimiento económico.
B2 noun /ˈfreʃmən/

freshman

estudiante de primer año
Meaning
a first-year student at a high school, college, or university
Example
The freshman felt nervous on his first day at university.
El estudiante de primer año se sintió nervioso en su primer día en la universidad.
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.
A2 noun /ˈfiː.lɪŋ/

Feeling

sensación; sentimiento; emoción
Meaning
an emotional state or reaction; the capacity to experience physical sensations
Example
She had a strange feeling that something important was about to happen.
Ella tenía una extraña sensación de que algo importante iba a suceder.
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.
B2 adjective /ˈfeɪvərəbl/

favourable

favorable
Meaning
Expressing approval, support, or positivity; advantageous or beneficial
Example
The weather conditions were favourable for the outdoor event.
Las condiciones climáticas fueron favorables para el evento al aire libre.
A1 verb /ˈfɒloʊ/

follow

seguir
Meaning
to move behind someone or something; to go after or come after
Example
The children followed their teacher into the classroom.
Los niños siguieron a su maestro al aula.
B2 noun /ˌfiː.ɑːnˈseɪ/

Fiancee

prometida
Meaning
a woman who is engaged to be married
Example
John bought a beautiful engagement ring for his fiancee.
John compró un hermoso anillo de compromiso para su prometida.
B2 adjective /fɔːrˈsiːəbl/

foreseeable

previsible
Meaning
Able to be predicted or expected in advance
Example
The company is unlikely to make changes in the foreseeable future.
Es poco probable que la empresa realice cambios en el futuro previsible.
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 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, 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 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.
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.
B1 noun /ˈfɛloʊ/

fellow

compañero
Meaning
a person who shares a common situation, interest, or activity with another
Example
He is a fellow student in my class.
Él es un compañero de clase en mi clase.
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.
B2 adjective, noun, verb /faʊl/

foul

sucio, injusto
Meaning
offensive to the senses; dirty or unpleasant; in sports, an unfair or illegal act
Example
The player was penalized for committing a foul.
El jugador fue penalizado por cometer una falta.
B1 noun /fæts/

fats

grasas
Meaning
Essential macronutrients that provide energy, support cell growth, and protect organs while helping absorb vitamins.
Example
Healthy fats from nuts and avocados support brain function.
Las grasas saludables de los frutos secos y los aguacates apoyan la función cerebral.
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.
B2 adjective /ˈfæktʃuəl/

Factual

factual; basado en hechos; verdadero
Meaning
based on facts; accurate; true
Example
The report contains only factual information.
El informe contiene solo información factual.
C2 noun /ˈfrɔːdjʊləns/

fraudulence

fraude
Meaning
The quality or state of being fraudulent; deceitfulness.
Example
The audit revealed fraudulence in the financial statements.
La auditoría reveló fraude en los estados financieros.
A1 adjective /fɑːst/

Fast

rápido; veloz
Meaning
moving or happening quickly; rapid; swift
Example
She runs very fast in the morning.
Ella corre muy rápido por la mañana.
C1 adjective /ˈfɪɡərətɪv/

figurative

figurado
Meaning
not literal; using figures of speech or symbolic representation
Example
She used figurative language to describe her feelings.
Ella usó lenguaje figurado para describir sus sentimientos.
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.
B2 verb, adjective /ˈfɒstər/

foster

fomentar
Meaning
to encourage the development of something; to raise a child that is not one's own
Example
The program aims to foster creativity in young students.
El programa tiene como objetivo fomentar la creatividad en los jóvenes estudiantes.
A2 verb /faʊnd/

found

fundar
Meaning
to establish or create something; to discover
Example
They founded the company in 1995.
Ellos fundaron la compañía en 1995.
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.
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 verb /ˌfɔːrɔːrˈdeɪn/

foreordain

predestinar
Meaning
to determine or decree something in advance; to predestine
Example
Some believe that our lives are foreordained by fate.
Algunos creen que nuestras vidas están predestinadas por el destino.
B2 noun /ˈfaʊn.dər/

Founder

fundador
Meaning
a person who establishes an institution or settlement; someone who starts or creates something
Example
Steve Jobs was the co-founder of Apple Inc. and revolutionized personal computing.
Steve Jobs fue el cofundador de Apple Inc. y revolucionó la computación personal.
B2 adjective /ˈfʌŋkʃənl/

functional

funcional
Meaning
designed to be practical and useful, rather than just decorative
Example
The design of the chair is simple but highly functional.
El diseño de la silla es simple pero altamente funcional.