flounder
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C1 verb /ˈflaʊndər/

flounder

tambalear
Meaning
To struggle or stagger clumsily; to experience difficulty or confusion.
Example
He floundered in the interview when asked difficult questions.
Él se tambaleó en la entrevista cuando le hicieron preguntas difíciles.
B2 noun /ˈfɪks.tʃər/

fixture

objeto permanente, material instalado
Meaning
a permanent or fixed object, often in a house or building
Example
The bathroom fixture was installed yesterday.
El accesorio del baño fue instalado ayer.
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 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.
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.
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.
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.
C1 adjective /ˌfʊl ˈbɒd.id/

full-bodied

de sabor intenso
Meaning
Having a strong, rich, and robust quality, especially of wine, coffee, or voice.
Example
He prefers a full-bodied red wine with his dinner.
Él prefiere un vino tinto de sabor intenso con su cena.
C1 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.
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.
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.
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 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.
A1 verb /flaɪ/

fly

volar
Meaning
to move through the air using wings or in an aircraft
Example
Birds fly south for the winter.
Los pájaros vuelan hacia el sur para el invierno.
B1 noun /ˈfjuː.əl/

Fuel

combustible
Meaning
a material such as coal, gas, or oil that is burned to produce heat or power
Example
The rising cost of fuel has affected transportation and heating expenses worldwide.
El aumento del costo del combustible ha afectado el transporte y los gastos de calefacción en todo el mundo.
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.
B2 noun /ˈfaʊn.tən/

Fountain

fuente
Meaning
a natural spring of water; an artificial structure from which water flows
Example
The fountain in the park attracts many visitors.
La fuente en el parque atrae a muchos visitantes.
A1 adjective /ˈfʌn.i/

Funny

divertido; extraño; gracioso;
Meaning
humorous; strange; amusing;
Example
He told a funny joke that made everyone laugh.
Él contó una broma divertida que hizo reír a todos.
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 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.
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.
C2 noun /fluːk/

fluke

golpe de suerte
Meaning
A stroke of luck; an unexpected piece of good fortune.
Example
Winning the lottery was a complete fluke.
Ganar la lotería fue un completo golpe de suerte.
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 /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.
B2 adverb /ˈfɔ:rmoast/

Foremost

ante todo; lo más importante
Meaning
most importantly; above all; in the first place
Example
First and foremost, we need to ensure safety.
Primero y ante todo, necesitamos asegurar la seguridad.
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.
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.
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.
C1 noun /flʌks/

flux

flujo
Meaning
continuous change or movement; the rate of flow of something
Example
The company was in a state of constant flux during the reorganization.
La empresa estaba en un estado de flujo constante durante la reorganización.
B1 noun /fiː/

fee

tarifa
Meaning
A payment made for a service or privilege.
Example
The lawyer charged a high fee for his services.
El abogado cobró una tarifa alta por sus servicios.
C2 noun /fəˈlɪsɪti/

felicity

felicidad
Meaning
intense happiness; the ability to find appropriate expression for one's thoughts
Example
She was known for her felicity in conversation and cheerful nature.
Era conocida por su felicidad en las conversaciones y su naturaleza alegre.
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.
A2 noun /ˈfɪŋ.ɡər/

Finger

dedo
Meaning
any of the four long thin parts of the hand (or five, if the thumb is included)
Example
She pointed with her finger to show the direction to the museum.
Ella señaló con su dedo para mostrar la dirección al museo.
B2 noun /fliːt/

fleet

flota
Meaning
a group of ships, vehicles, or aircraft operating together under one command
Example
The navy deployed its entire fleet for the exercise.
La armada desplegó toda su flota para el ejercicio.
A1 adjective /fjuː/

few

pocos
Meaning
A small number of; not many.
Example
Only a few students attended the class.
Solo unos pocos estudiantes asistieron a la clase.
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.
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.
A2 noun/adjective /ˈfiːmeɪl/

female

hembra
Meaning
a person or animal of the sex that can bear offspring; relating to women or girls
Example
The female lion protects her cubs fiercely.
La leona hembra protege a sus cachorros ferozmente.
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 /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.
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.
A2 noun /ˈflaɪ.ɪŋ ˈkriː.tʃər/

Flying creature

criatura voladora
Meaning
any animal that has the ability to fly through the air
Example
Birds, bats, and insects are all examples of flying creatures.
Los pájaros, los murciélagos y los insectos son ejemplos de criaturas voladoras.
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.
C1 noun /ˈfʌŋɡəs/

fungus

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

fathom

entender
Meaning
To understand after much thought; to measure the depth of water; to comprehend.
Example
It is difficult to fathom the depths of the ocean.
Es difícil entender las profundidades del océano.
B2 adjective /ˈflɔːrəl/

floral

floral
Meaning
Relating to flowers or decorated with flowers.
Example
She wore a beautiful floral dress to the party.
Ella llevó un hermoso vestido floral a la fiesta.
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 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.
A1 noun /frɛnd/

friend

amigo
Meaning
a person with whom one has a bond of mutual affection
Example
He is my best friend.
Él es mi mejor amigo.
B2 adverb /ˈfɜ:rst hænd/

First-hand

de primera mano; directamente
Meaning
directly experienced or obtained; from the original source
Example
I experienced the earthquake first-hand.
Experimenté el terremoto de primera mano.
C1 adjective ˈfɔːr.mɪ.də.bəl

formidable

formidable
Meaning
Inspiring fear or respect through being impressively large, powerful, intense, or capable.
Example
The boxer was a formidable opponent in the ring.
El boxeador era un oponente formidable en el ring.
C1 adjective fæsˈtɪd.i.əs

fastidious

meticuloso
Meaning
Very attentive to and concerned about accuracy and detail.
Example
She is fastidious about maintaining cleanliness.
Ella es meticulosa al mantener la limpieza.
C1 noun /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 /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.
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.
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.
A2 noun /fɑːrm/

farm

granja
Meaning
an area of land used for growing crops and raising animals
Example
They live on a farm with many animals.
Ellos viven en una granja con muchos animales.
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.
C1 noun /ˈfɔɪeɪr/

foyer

vestíbulo
Meaning
An entrance hall or lobby in a building.
Example
The guests waited in the hotel foyer before checking in.
Los huéspedes esperaron en el vestíbulo del hotel antes de registrarse.
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.
A1 verb /fɔːl/

fall

caer
Meaning
to drop down from a higher place; to decrease; to happen or occur
Example
The leaves fall from the trees in autumn.
Las hojas caen de los árboles en otoño.
C2 noun /ˈfoʊksl/

forecastle

castillo de proa
Meaning
The forward part of a ship below the deck, traditionally used as living quarters for the crew.
Example
The sailors gathered in the forecastle after their shift.
Los marineros se reunieron en el castillo de proa después de su turno.
B2 noun /frɒk/

Frock

falda
Meaning
a dress, especially a simple or casual one for women or children
Example
The little girl wore a pink frock to her birthday party.
La niña pequeña llevaba una falda rosa a su fiesta de cumpleaños.
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.
C1 adjective /ˈfɑːð.ər.ləs/

fatherless

huérfano de padre
Meaning
without a father
Example
The fatherless child relied on the support of his community.
El niño huérfano de padre dependía del apoyo de su comunidad.
C1 noun /flæt fɪʃ/

Flat fish

pez plano
Meaning
a type of fish with a flattened body that lives on the sea floor
Example
Flat fish like sole and flounder are excellent for grilling.
Los peces planos como el lenguado y el platija son excelentes para asar a la parrilla.
C1 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 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.
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.
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.
C2 noun /ˈfoʊ.li.oʊ/

folio

gran libro o manuscrito
Meaning
A sheet of paper folded once to form two leaves (four pages) of a book; also a term for a large book or manuscript.
Example
The library houses an ancient Shakespeare folio.
La biblioteca alberga un antiguo folio de Shakespeare.
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.
B2 noun ˈfreɪm.wɜːk

framework

marco
Meaning
An essential supporting structure of a building, vehicle, or object; a basic structure underlying a system, concept, or text.
Example
A strong framework is vital for governance.
Un marco fuerte es vital para la gobernanza.
B2 noun /ˈfɛmənɪst/

feminist

feminista
Meaning
a person who supports equal rights and opportunities for women and men
Example
She proudly calls herself a feminist and fights for gender equality.
Ella orgullosamente se llama a sí misma feminista y lucha por la igualdad de género.
A2 noun /fɔːrk/

Fork

tenedor
Meaning
a tool with two or more prongs used for eating or serving food
Example
Please use a fork to eat your salad.
Por favor, usa un tenedor para comer tu ensalada.
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.
C1 noun /ˈfæs.ɪt/

facet

faceta, aspecto, parte
Meaning
One of the many aspects or features of something; a particular part or element of something.
Example
Every facet of the project was carefully analyzed.
Cada faceta del proyecto fue cuidadosamente analizada.
B2 verb /flɜːrt/

flirt

coquetear
Meaning
to behave as if you are attracted to someone, but not in a serious way
Example
She often flirts with her colleagues at work.
Ella a menudo coquetea con sus compañeros de trabajo.
C1 noun ˈfɔː.saɪt

foresight

previsión
Meaning
The ability to predict or the action of predicting what will happen or be needed in the future.
Example
His foresight helped the company avoid financial losses.
Su previsión ayudó a la empresa a evitar pérdidas financieras.
A2 verb /fɪks/

fix

arreglar
Meaning
To repair or make something work again.
Example
The mechanic fixed the broken car.
El mecánico arregló el coche roto.
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.
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 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.
B1 noun /ˈfaɪn.dɪŋ/

finding

descubrimiento, conclusión o resultado obtenido después de una investigación
Meaning
a discovery, conclusion, or result reached after investigation
Example
The scientist published her findings in a leading journal.
La científica publicó sus hallazgos en una revista de prestigio.
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.
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.
A2 adjective /ˈfɪnɪʃt/

finished

terminado, completo
Meaning
completed or brought to an end
Example
The painting is finished and ready to display.
La pintura está terminada y lista para exhibir.
A1 noun/verb /fɪʃ/

fish

felicidad
Meaning
an aquatic animal with gills, or to try to catch such animals
Example
He went to the lake to fish early in the morning.
Ella no pudo ocultar su felicidad cuando recibió el premio.
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.
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.
B2 noun /ˈfɔːrəm/

forum

foro
Meaning
A place, meeting, or medium where ideas and views can be exchanged.
Example
The online forum allows people to discuss a wide range of topics.
El foro en línea permite a las personas discutir una amplia gama de temas.
C1 verb /fɔrˈstɔl/

forestall

prevenir de antemano
Meaning
to prevent by acting in advance; to anticipate and counter
Example
They forestalled the crisis by taking immediate action.
Ellos evitaron la crisis tomando acción inmediata.
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.
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.
B2 adjective /fəˈbɪd.ən/

Forbidden

prohibido; vetado; ilegal
Meaning
not allowed; prohibited; banned
Example
Smoking is strictly forbidden in this building.
Fumar está estrictamente prohibido en este edificio.
B2 adverb /ˈflu:əntli/

Fluently

con fluidez; de manera fluida
Meaning
in a smooth, effortless, and articulate manner; with ease and skill
Example
She speaks French fluently.
Ella habla francés con fluidez.
B1 noun /ˈfɔːr.mæt/

Format

formato
Meaning
the way in which something is arranged or set out; the shape, size, and presentation of a book or document
Example
Please submit your report in PDF format by the end of the week.
Por favor, envíe su informe en formato PDF antes del final de la semana.
B2 adjective /ˈflɔː.ləs/

Flawless

perfecto; sin defectos
Meaning
perfect; without any defects or faults; immaculate
Example
Her flawless performance earned her a standing ovation.
Su actuación perfecta le valió una ovación de pie.
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.
A2 noun /ˈfiːvər/

fever

fiebre
Meaning
a medical condition in which the body temperature is higher than normal
Example
He couldn’t go to work because he had a high fever.
No pudo ir a trabajar porque tenía fiebre alta.
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.
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 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.
A1 number /ˌfɪfˈtiːn/

fifteen

quince
Meaning
the number 15
Example
There are fifteen students in the class.
Hay quince estudiantes en la clase.
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.
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.
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.
B2 adverb /ˌfɜːrðərˈmɔːr/

furthermore

además
Meaning
Used to introduce an additional point or idea; in addition.
Example
The plan is simple and, furthermore, it is affordable.
El plan es sencillo y, además, es asequible.
C1 adjective ˈflʌd proʊn

flood-prone

propenso a inundaciones
Meaning
Susceptible to flooding; likely to experience floods frequently.
Example
Bangladesh is a flood-prone deltaic nation.
Bangladesh es una nación deltaica propensa a inundaciones.
B2 adverb /fɔːrθ/

forth

adelante
Meaning
forward in place, time, or order
Example
The leader stepped forth to address the crowd.
El líder avanzó para dirigirse a la multitud.
C1 adverb /ˈfɪksɪdli/

Fixedly

fijamente
Meaning
in a steady, unmoving manner; with intense concentration
Example
He stared fixedly at the painting.
Él miró fijamente la pintura.
C1 noun/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.
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.
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.
B2 noun /ˈfɔːr.kæst/

Forecast

pronóstico
Meaning
a prediction or estimate of future events, especially coming weather conditions
Example
The weather forecast predicted heavy rain for the entire weekend.
El pronóstico del tiempo predijo lluvias intensas para todo el fin de semana.
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.
B1 noun /ˈfes.tə.vəl/

Festival

festival; fiesta;
Meaning
a day or period of celebration, typically for religious reasons; an organized series of concerts, films, etc.
Example
The music festival attracted thousands of visitors from around the world.
El festival de música atrajo a miles de visitantes de todo el mundo.
C1 noun /fəˈsɑːd/

facade

fachada
Meaning
The front of a building; a false or superficial appearance
Example
The building's glass facade reflected the sunset.
La fachada de vidrio del edificio reflejaba el atardecer.
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.
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.
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.