flight
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A2 noun /flaɪt/

flight

vuelo / vuelo
Meaning
the act of flying, typically through the air; or a scheduled trip by an aircraft
Example
Our flight to London was delayed due to bad weather.
Nuestro vuelo a Londres se retrasó debido al mal tiempo.
C2 verb /ˈfʌdəl/

fuddle

confundir
Meaning
To confuse or stupefy, especially with alcohol or overwhelming information.
Example
The complicated instructions fuddled the new employees.
Las instrucciones complicadas confundieron a los nuevos empleados.
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.
B1 noun /frʌˈstreɪʃən/

frustration

frustración
Meaning
The feeling of being upset or annoyed due to inability to achieve something.
Example
He felt deep frustration when his plans failed.
Sintió una profunda frustración cuando sus planes fracasaron.
B2 noun /ˈfeɪbəl/

fable

fábula
Meaning
a short story, typically featuring animals as characters, that conveys a moral lesson
Example
Aesop’s fables are famous for teaching valuable lessons through simple stories.
Las fábulas de Esopo son famosas por enseñar valiosas lecciones a través de historias simples.
C2 noun /fækˈtoʊtəm/

factotum

trabajador polifacético
Meaning
an employee who does many different types of work; a general servant
Example
He worked as a factotum, handling both clerical and maintenance duties.
Trabajaba como un factótum, manejando tanto tareas administrativas como de mantenimiento.
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.
B2 noun, verb /ˈfaɪlɪŋ/

filing

presentación de documentos; organización de papeles
Meaning
the act of submitting documents; the process of organizing papers
Example
The lawyer handled the filing of all court documents.
El abogado manejó la presentación de todos los documentos judiciales.
B1 noun/verb /ˈfaɪtɪŋ/

fighting

lucha
Meaning
the act of engaging in a physical or verbal conflict
Example
The soldiers were fighting bravely on the battlefield.
Los soldados luchaban valientemente en el campo de batalla.
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.
A1 verb /feɪs/

face

enfrentar
Meaning
to confront or deal with; to turn toward; to have the front in a particular direction
Example
She had to face many challenges in her new job.
Ella tuvo que enfrentar muchos desafíos en su nuevo trabajo.
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 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.
B2 noun ˈflæʃkɑːrdz

flashcards

tarjetas didácticas
Meaning
Cards containing small amounts of information, held up for students to see, as an aid to learning.
Example
Flashcards help in quick memorization.
Las tarjetas didácticas ayudan en la memorización rápida.
B2 verb /fɔːrˈsiː/

foresee

prever
Meaning
To be aware of beforehand; to predict or expect.
Example
She could foresee the challenges ahead.
Ella podía prever los desafíos por delante.
B2 noun /ˈfjʊr.i/

Fury

furia salvaje o violenta;
Meaning
wild or violent anger; extreme intensity of emotion or activity
Example
His fury was evident when he discovered someone had stolen his bicycle.
Su furia fue evidente cuando descubrió que alguien había robado su bicicleta.
A2 verb /feɪl/

fail

fracasar
Meaning
to not succeed in achieving something; to be unsuccessful
Example
He failed to complete the assignment on time.
Él fracasó en completar la tarea a tiempo.
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.
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 /ˈfreɪlti/

frailty

fragilidad
Meaning
The condition of being weak, delicate, or easily broken.
Example
Old age often comes with physical frailty.
La vejez a menudo viene con fragilidad física.
B2 verb /flɪp/

flip

voltear
Meaning
to turn over quickly or suddenly; to toss lightly
Example
She flipped the pancake in the pan.
Ella volteó el panqueque en la sartén.
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.
B1 noun fəˈsɪl.ɪ.tiz

facilities

instalaciones
Meaning
A place, amenity, or piece of equipment provided for a particular purpose.
Example
Facilities improve industrial productivity.
Las instalaciones mejoran la productividad industrial.
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 /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.
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 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 /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.
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 /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.
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.
C1 adverb /ˈfɜː.vənt.li/

Fervently

con fervor; ardientemente;
Meaning
with passionate intensity; ardently; with great emotion or enthusiasm
Example
She fervently hoped that her dreams would come true.
Ella esperaba fervientemente que sus sueños se hicieran realidad.
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 /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.
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 /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.
A2 noun /ˈfɔːrənər/ or /ˈfɑːrənər/

foreigner

extranjero
Meaning
A person from another country.
Example
The city welcomes every foreigner with kindness.
La ciudad recibe a cada extranjero con amabilidad.
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 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.
A2 noun /faɪl/

File

archivo
Meaning
a tool with a rough surface for smoothing or shaping hard materials; a collection of papers or data
Example
He used a metal file to smooth the rough edges.
Él usó un archivo metálico para suavizar los bordes ásperos.
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.
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.
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.
B2 verb ˈfaɪ.nəl.aɪz

finalize

finalizar
Meaning
To complete arrangements for something; put into final form.
Example
The treaty was finalized after the discussions.
El tratado fue finalizado después de las discusiones.
B2 verb, noun, adjective /flʌʃ/

flush

ponerse rojo / limpiar con agua
Meaning
to become red in the face, usually from embarrassment, heat, or excitement; to clean something with a flow of water
Example
She flushed with embarrassment when she realized her mistake.
Ella se sonrojó de vergüenza cuando se dio cuenta de su error.
A2 noun /ˈfæʃ.ən/

fashion

moda
Meaning
a popular or accepted style of clothing, behavior, or way of doing something
Example
She always keeps up with the latest fashion.
Ella siempre sigue la última moda.
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.
A2 adjective /fɪfθ/

fifth

quinto
Meaning
constituting number five in a sequence
Example
She lives on the fifth floor of the building.
Ella vive en el quinto piso del edificio.
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.
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.
A1 noun /ˈflaʊər/

flower

flor
Meaning
the seed-bearing part of a plant, often colorful and fragrant, that blossoms
Example
The garden was full of colorful flowers.
El jardín estaba lleno de flores coloridas.
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.
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 noun /ˈfɪʃˌmʌŋ.ɡər/

fishmonger

pescadero
Meaning
a person or store that sells fish
Example
I bought fresh salmon from the local fishmonger.
Compré salmón fresco del pescadero local.
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.
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.
B1 verb /ˈfɛri/

ferry

transportar en ferry
Meaning
to transport by boat; to carry back and forth
Example
The boat ferried passengers across the river.
El bote transportó a los pasajeros a través del río.
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.
A2 verb /fərˈɡɪv/

forgive

perdonar
Meaning
to stop feeling angry or resentful toward someone; to pardon
Example
She decided to forgive him for his mistakes.
Ella decidió perdonarlo por sus errores.
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 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 /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.
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.
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.
C2 noun /ˈfɔːltˌfaɪndər/

faultfinder

buscador de fallos
Meaning
a person who habitually finds fault with others
Example
He is such a faultfinder that nothing anyone does is ever good enough.
Es un buscador de fallos tan grande que nada de lo que haga alguien está nunca lo suficientemente bien.
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.
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.
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.
A2 adjective /fɪt/

Fit

apropiado; adecuado; saludable; en buena forma física; listo
Meaning
suitable; appropriate; healthy; in good physical condition; ready
Example
He is fit and healthy.
Él está en forma y saludable.
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 /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.
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 adjective /ˈflʌstərd/

flustered

desconcertado
Meaning
in a state of confusion or agitation
Example
She appeared flustered after being asked so many questions.
Ella parecía desconcertada después de tantas preguntas.
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.
B2 noun /fluːt/

Flute

flauta
Meaning
a musical wind instrument with holes along its length that is played by blowing across a hole at one end
Example
He played a sweet melody on his flute.
Él tocó una dulce melodía en su flauta.
B1 noun /fɔːlt/

Fault

culpa; error; defecto
Meaning
an unattractive or unsatisfactory feature; responsibility for an accident or misfortune
Example
The accident was caused by a fault in the car's braking system.
El accidente fue causado por un fallo en el sistema de frenos del coche.
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.
B2 adverb /ˈfɔːrməli/

formally

formalmente
Meaning
in a formal or official manner; according to established rules or conventions
Example
The agreement was formally signed by both parties.
El acuerdo fue firmado formalmente por ambas partes.
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.
B1 adjective /ˈfɔːrmər/

former

anterior
Meaning
Having been previously in a particular role or position.
Example
He is a former president of the association.
Él es un presidente anterior de la asociación.
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.
B1 noun /ˈfiːdbæk/

feedback

retroalimentación
Meaning
information or opinions about how well someone is doing something
Example
She asked her teacher for feedback on her essay.
Ella pidió a su profesor comentarios sobre su ensayo.
A1 verb /ˈfɪnɪʃ/

finish

terminar
Meaning
to complete or bring to an end; to reach the final point
Example
She finished her homework before dinner.
Ella terminó su tarea antes de la cena.
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.
B2 noun/verb /ˈfɒs.tər.ɪŋ/

fostering

fomentar
Meaning
The process of encouraging or promoting the development or growth of something; nurturing and caring for.
Example
Good teachers play a key role in fostering creativity in students.
Los buenos maestros desempeñan un papel clave en fomentar la creatividad en los estudiantes.
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.
B2 adverb /ˈfeɪθ.fəl.i/

Faithfully

fielmente
Meaning
in a loyal and steadfast manner; with dedication
Example
She faithfully attended every meeting despite her busy schedule.
Ella asistió fielmente a todas las reuniones a pesar de su apretada agenda.
C2 adjective /ˈfrɒlɪksəm/

Frolicsome

juguetón; alegre; vivaz
Meaning
joyful; playful; merry; cheerful
Example
The frolicsome children laughed and played in the park.
Los niños juguetones rieron y jugaron en el parque.
C1 noun/verb /ˈfʌrəʊ/

furrow

surco
Meaning
A long narrow trench made in the ground by a plow; to make wrinkles or grooves.
Example
The farmer plowed furrows in the field.
El agricultor hizo surcos en el campo.
B1 adverb /ˈfriːli/

Freely

libremente; sin restricciones;
Meaning
without restriction; openly; willingly
Example
She spoke freely about her experiences during the interview.
Ella habló libremente sobre sus experiencias durante la entrevista.
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.
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.
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.
A2 adjective /fer/

Fair

justo; razonable; atractivo
Meaning
just and reasonable; treating people equally; light in color; attractive
Example
The judge made a fair decision in the case.
El juez tomó una decisión justa en el caso.
B1 noun /ˈfaɪəˌfaɪtə/

firefighter

bombero
Meaning
a person whose job is to put out fires
Example
The firefighter saved the family from the burning building.
El bombero salvó a la familia del edificio en llamas.
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.
B1 noun, verb /ˈfaɪ.næns/ or /fəˈnæns/

finance

finanzas
Meaning
the management of money and investments, or to provide funds for something
Example
The company secured finance from a major bank.
La compañía obtuvo financiamiento de un banco importante.
A1 number /ˈfɔːrti/

forty

felicidad
Meaning
the number 40; ten times four
Example
She celebrated her forty years of life with a big party.
Ella no pudo ocultar su felicidad cuando recibió el premio.
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.
B1 noun /ˈfæktər/

factor

factor
Meaning
A circumstance, fact, or influence that contributes to a result.
Example
Weather is an important factor in crop production.
El clima es un factor importante en la producción de cultivos.
B2 noun /ˈfɔːrmjələ/

formula

fórmula
Meaning
a fixed method for doing something; a mathematical or chemical rule expressed in symbols
Example
The scientist discovered a new formula for the medicine.
El científico descubrió una nueva fórmula para la medicina.
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!
A2 noun fɔːrs

force

fuerza
Meaning
A physical power or energy that can cause movement, change, or influence.
Example
Strong nuclear force binds particles.
La fuerte fuerza nuclear une las partículas.
C2 noun /ˈflɛdʒlɪŋ/

fledgeling

pájaro joven
Meaning
A young bird that has just developed its feathers and is learning to fly; a beginner.
Example
The fledgeling was trying hard to take its first flight.
El pájaro joven estaba tratando de hacer su primer vuelo.
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.
B2 verb /fliː/

flee

huir
Meaning
To run away from danger or a threatening situation.
Example
The villagers had to flee during the flood.
Los aldeanos tuvieron que huir durante la inundación.
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 /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.
B1 noun /flæʃ/

Flash

destello; resplandor
Meaning
a sudden brief burst of bright light; a very brief moment
Example
There was a bright flash of lightning followed by thunder.
Hubo un destello brillante de relámpago seguido de un trueno.
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.
A1 noun/verb /fɪlm/

film

película
Meaning
a motion picture or movie; or to record on camera
Example
They watched a film together on the weekend.
Ellos vieron una película juntos el fin de semana.
C2 adjective /ˈfʌsti/

fusty

húmedo y rancio
Meaning
smelling stale, damp, or stuffy; old-fashioned
Example
The room smelled fusty after being closed for months.
La habitación olía a rancio después de estar cerrada durante meses.
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.
B2 noun /fɪɡ/

Fig

higo
Meaning
a soft sweet fruit that is purple or green on the outside and has many small seeds
Example
The fig tree in our backyard produces delicious fruits every summer.
El árbol de higo en nuestro jardín produce frutas deliciosas cada verano.
C2 verb /flɪt/

flit

revolotear
Meaning
to move quickly and lightly from one place to another
Example
Butterflies flitted from flower to flower.
Las mariposas revoloteaban de flor en flor.
B2 verb /fʊlˈfɪl/

fulfill

cumplir
Meaning
to complete or accomplish something, especially a task or promise
Example
He worked hard to fulfill his dreams.
Trabajó duro para cumplir sus sueños.
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.
B1 noun ˈfæmɪli triː

Family Tree

Árbol genealógico
Meaning
A diagram showing the relationships between people in several generations of a family.
Example
Creating a family tree helps understand family history.
Crear un árbol genealógico ayuda a entender la historia familiar.
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.
A1 noun /fruːt/

fruit

fruta
Meaning
The sweet and fleshy product of a plant that contains seeds.
Example
Mango is my favorite fruit.
El mango es mi fruta favorita.
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.