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A2 adjective, adverb /ˈfʊl taɪm/

full-time

a tiempo completo
Meaning
working or studying for the whole standard period of time
Example
She works full-time as a teacher.
Ella trabaja a tiempo completo como profesora.
A2 adjective /ˈfroʊzən/

frozen

congelado
Meaning
preserved by being made extremely cold; turned into ice
Example
The lake was completely frozen during winter.
El lago estaba completamente congelado durante el invierno.
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 /fiːt/

feat

hazaña
Meaning
an achievement that requires great courage, skill, or strength
Example
Climbing Mount Everest was a remarkable feat.
Escalar el monte Everest fue una hazaña notable.
C1 noun /fɑːrs/

farce

farsa
Meaning
a comic dramatic work using buffoonery and horseplay, or a ridiculous situation
Example
The meeting turned into a complete farce with everyone arguing.
La reunión se convirtió en una farsa completa con todos discutiendo.
C1 noun /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 noun /fleʃ/

Flesh

carne
Meaning
the soft substance consisting of muscle and fat that is found between the skin and bones
Example
The doctor examined the wound to check if it had penetrated the flesh.
El doctor examinó la herida para ver si había penetrado en la carne
C1 noun /fɔːn/

Fawn

cervatillo
Meaning
a young deer; a light yellowish-brown color
Example
The mother deer protects her fawn from predators.
La cierva protege a su cervatillo de los depredadores.
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.
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 /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.
C1 verb /fɔːrˈkloʊz/

foreclose

embargar
Meaning
to take possession of a property due to the owner's failure to keep up mortgage payments
Example
The bank decided to foreclose on the property after months of missed payments.
El banco decidió embargar la propiedad después de meses de pagos perdidos.
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.
C1 noun /ˈfɔːrˌbɛər/

forebear

antepasado
Meaning
An ancestor, especially one who lived a long time ago.
Example
He often speaks of his forebears with great respect.
Él habla a menudo de sus antepasados con mucho respeto.
B2 noun ˈfeɪs tə ˈfeɪs ˈbætl

face-to-face battle

batalla cara a cara
Meaning
A direct confrontation or fight between opposing forces.
Example
The warriors fought a face-to-face battle with the enemies.
Los guerreros lucharon una batalla cara a cara con los enemigos.
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 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 /flɛkˈsɪbɪləti/

flexibility

flexibilidad
Meaning
The quality of bending easily without breaking; willingness to change or compromise.
Example
The flexibility of the working hours made it easier to balance work and personal life.
La flexibilidad de los horarios de trabajo facilitó equilibrar el trabajo y la vida personal.
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.
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.
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.
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 /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 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.
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.
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 noun /ˈfɔːrwɜːrd/

foreword

prólogo
Meaning
a short introduction at the beginning of a book, typically written by someone other than the author
Example
The foreword of the book was written by a famous historian.
El prólogo del libro fue escrito por un historiador famoso.
B2 noun /ˈfrɪkʃən/

friction

fricción
Meaning
the resistance that one surface or object encounters when moving over another; conflict or tension between people or groups
Example
There was friction between the two departments over resource allocation.
Hubo fricción entre los dos departamentos sobre la asignación de recursos.
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.
B2 verb /ˈfɪltər/

filter

filtrar
Meaning
to pass a substance through a device to remove unwanted material or to selectively pass certain items
Example
She used a coffee filter to separate the grounds from the liquid.
Ella usó un filtro de café para separar los posos del líquido.
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.
B2 noun /ˈfɜːrneɪs/

furnace

horno
Meaning
an enclosed structure in which heat is produced for a building or for melting metal
Example
The factory's furnace melted the metal quickly.
El horno de la fábrica fundió el metal rápidamente.
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.
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.
C1 noun /ˈfaɪərɑːm/

firearm

arma de fuego
Meaning
a weapon capable of firing a projectile using gunpowder or other propellant
Example
The police found a hidden firearm during the investigation.
La policía encontró un arma de fuego oculta durante la investigación.
A1 noun /ˈfʊtˌbɔːl/

football

fútbol
Meaning
A team sport played with a ball that is kicked or carried to score points.
Example
They watched a football match on TV.
Vieron un partido de fútbol en la televisión.
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.
A2 adverb /ˈfaɪ.nəl.i/

Finally

finalmente
Meaning
at last; after a long time; in the end; as the last point
Example
After years of hard work, she finally achieved her goal.
Después de años de arduo trabajo, ella finalmente alcanzó su meta.
C1 noun, verb /ˈfɛrɪt/

ferret

hurón, buscar persistentemente o descubrir algo
Meaning
a small domesticated animal used for hunting; to search or uncover something persistently
Example
He ferreted out the hidden documents.
Él sacó los documentos ocultos.
B1 adjective /ˈfluː.ənt/

Fluent

fluido; elocuente
Meaning
able to speak a language easily and accurately; flowing smoothly and gracefully
Example
She is fluent in three languages including English and French.
Ella es fluida en tres idiomas, incluidos el inglés y el francés.
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.
C1 noun/verb /freɪ/

fray

pelea, desgastarse
Meaning
As a noun, a fight or heated dispute; as a verb, to unravel or wear out through friction.
Example
He tried to stay calm, but his nerves began to fray during the argument.
Trató de mantenerse calmado, pero sus nervios empezaron a desgastarse durante la discusión.
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.
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.
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.
B2 adjective /fɪərs/

Fierce

feroz; agresivo; mostrando gran sentimiento o determinación
Meaning
violent; aggressive; showing strong feeling or determination
Example
The fierce storm destroyed many houses in the village.
La tormenta feroz destruyó muchas casas en el pueblo.
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.
A1 adjective /ˈfrɛndli/

friendly

felicidad
Meaning
Kind and pleasant; showing goodwill and affection.
Example
The shop owner is very friendly to new customers.
Ella no pudo esconder su felicidad cuando recibió el premio.
B1 adjective /ˈflek.sə.bəl/

Flexible

flexible; fácil de adaptar
Meaning
able to bend easily; adaptable to change; not rigid
Example
She has a flexible work schedule that allows her to work from home.
Ella tiene un horario de trabajo flexible que le permite trabajar desde casa.
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.
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.
B2 noun ˈfjuː.tʃɚ ˌdʒen.əˈreɪ.ʃənz

future generations

futuras generaciones
Meaning
People who have not yet been born, considered in terms of the environment or society they will inherit.
Example
Sustainable development ensures a better life for future generations.
El desarrollo sostenible asegura una mejor vida para las futuras generaciones.
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.
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.
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.
B2 adjective /ˈfraɪtfəl/

frightful

espantoso
Meaning
causing fear or horror; very unpleasant
Example
The hikers faced frightful weather conditions on the mountain.
Los excursionistas enfrentaron condiciones climáticas espantosas en la montaña.
B2 noun /ˈfækəlti/

faculty

facultad, capacidad
Meaning
an inherent mental or physical ability; a division of a university
Example
She has a remarkable faculty for languages.
Ella tiene una facultad notable para los idiomas.
C1 noun /ˈfæk.ʃən/

Faction

facción
Meaning
a small organized dissenting group within a larger one
Example
Different factions within the party disagreed about the new policy.
Diferentes facciones dentro del partido no estuvieron de acuerdo sobre la nueva política.
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.
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.
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.
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.
A2 adjective /frɛʃ/

fresh

fresco
Meaning
new, recently made, or clean and pure
Example
The bread is still fresh from the oven.
El pan sigue fresco del horno.
A1 noun /ˈfæməli/

family

familia
Meaning
A group consisting of parents and their children, or all the descendants of a common ancestor.
Example
She spends most of her weekends with her family.
Ella pasa la mayoría de sus fines de semana con su familia.
B2 noun /ˈfeð.ər/

Feather

pluma de ave
Meaning
one of the light structures that cover a bird's body
Example
The peacock has beautiful colorful feathers.
El pavo real tiene hermosas plumas de colores.
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 /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.
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.
B1 adjective /fɪkst/

fixed

fijo, estable
Meaning
firmly in place; not changing or movable
Example
The schedule for the meeting is fixed for Monday morning.
El horario de la reunión está fijado para el lunes por la mañana.
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.
B2 noun /fraɪt/

Fright

miedo; susto; pavor
Meaning
a sudden intense feeling of fear; a shock or surprise that causes fear
Example
The loud thunder gave her such a fright that she dropped her coffee cup.
El fuerte trueno le dio tal susto que dejó caer su taza de café.
A1 noun ˈflaʊərz

Flowers

flor
Meaning
The reproductive structures of plants that provide nectar for butterflies.
Example
Butterflies are attracted to colorful flowers.
Las mariposas se sienten atraídas por las flores coloridas.
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 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.
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.
B1 noun /ˈfaɪər.mən/

Fireman

bombero
Meaning
a person whose job is to extinguish fires and rescue people
Example
The brave fireman rescued the family from the burning building.
El valiente bombero rescató a la familia del edificio en llamas.
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 adjective /fəˈmɪl.jər/

Familiar

familiar; conocido; informal y amistoso
Meaning
well-known; easily recognized; having knowledge of; informal and friendly
Example
This song sounds familiar to me.
Esta canción me suena familiar.
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.
C1 noun /ˌfæb.rɪˈkeɪ.ʃən/

fabrication

invención falsa
Meaning
The invention of false or misleading information; a lie or falsehood.
Example
The article was full of fabrication and misleading claims.
El artículo estaba lleno de invenciones falsas y reclamos engañosos.
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.
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.
A2 noun /fraɪd raɪs/

Fried rice

arroz frito
Meaning
a dish of cooked rice that has been stir-fried in a wok or frying pan
Example
We ordered chicken fried rice from the Chinese restaurant.
Pedimos arroz frito con pollo del restaurante chino.
A1 adjective /fɜːrst/

first

primero
Meaning
coming before all others in time, order, or importance
Example
She was the first to arrive at the meeting.
Ella fue la primera en llegar a la reunión.
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.
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.
A2 noun /ˈfɑː.mɪŋ/

farming

agricultura
Meaning
the activity or business of growing crops and raising animals for food or other products
Example
Farming requires both hard work and knowledge about the land.
La agricultura requiere tanto trabajo duro como conocimiento sobre la tierra.
B2 adjective /ˈfeɪtl/

fatal

fatal
Meaning
causing death; leading to disaster
Example
The accident proved fatal for the driver.
El accidente resultó fatal para el conductor.
A2 verb /friːz/

freeze

congelar
Meaning
to become solid due to cold; to preserve by cold
Example
Water freezes at zero degrees Celsius.
El agua se congela a cero grados Celsius.
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 /ˈflaɪti/

flighty

inestable
Meaning
unstable, impulsive, or easily distracted; lacking seriousness or stability
Example
She’s too flighty to stick with one job for long.
Ella es demasiado inestable para quedarse en un solo trabajo por mucho tiempo.
B2 noun /ˌfæs.ɪˈneɪ.ʃən/

Fascination

fascinación; atracción; asombro
Meaning
the power to fascinate someone; the state of being intensely interested
Example
Her fascination with ancient history led her to become an archaeologist.
Su fascinación por la historia antigua la llevó a convertirse en arqueóloga.
B2 verb /ˈflʌrɪʃ/

flourish

florecer
Meaning
To grow or develop in a healthy or successful way.
Example
Her business began to flourish after she introduced online sales.
Su negocio comenzó a florecer después de que introdujo las ventas en línea.
C2 adjective /fækˈtɪʃəs/

factitious

artificial, no genuino
Meaning
artificial or fabricated; not natural or genuine
Example
The excitement in his story seemed factitious and forced.
La emoción en su historia parecía artificial y forzada.
C1 verb /flaʊt/

flout

despreciar
Meaning
To openly disregard or show contempt for a rule or law.
Example
The company was fined for flouting environmental regulations.
La empresa fue multada por ignorar las regulaciones ambientales.
B2 adverb /ˌfʌndəˈmɛntəli/

fundamentally

fundamentalmente
Meaning
in a basic and important way; at the core
Example
The two theories are fundamentally different.
Las dos teorías son fundamentalmente diferentes.
C1 noun /ˈfɛtɪʃ/

fetish

devoción excesiva o irracional
Meaning
an excessive or irrational devotion to something
Example
He has a fetish for collecting rare stamps.
Él tiene una fijación por coleccionar sellos raros.
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.
B2 noun /ˈfʊtɪdʒ/

footage

grabación de video
Meaning
a recorded film or video, especially one that is used for news or documentaries
Example
The footage of the protest was shown on television all day.
El metraje de la protesta se mostró en la televisión todo el día.
A2 noun /frʌnt/

front

delante
Meaning
the forward-facing part of something
Example
The house has a garden in front.
La casa tiene un jardín delante.
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.
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.
C2 noun /ˈfiːəlti/

fealty

fidelidad y lealtad
Meaning
loyalty or allegiance, especially to a sovereign or lord
Example
The knight swore fealty to his king.
El caballero juró fidelidad a su rey.
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.
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.
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.
B2 noun /ˈfræk.ʃən/

Fraction

fracción; parte
Meaning
a numerical quantity that is not a whole number; a small or tiny part of something
Example
Only a small fraction of the population voted in the local election.
Solo una pequeña fracción de la población votó en las elecciones locales.
B1 noun /ˈfæn.si/

Fancy

gusto; imaginación o fantasía
Meaning
a feeling of liking or wanting something; imagination or fantasy
Example
The child had a fancy for becoming a famous astronaut when he grew up.
El niño tenía una inclinación por convertirse en un astronauta famoso cuando creciera.
C1 noun /ˈflɔː.rə/

flora

la vida vegetal encontrada en una región o hábitat particular
Meaning
The plant life found in a particular region or habitat.
Example
The Amazon rainforest is home to a vast flora diversity.
La selva amazónica es hogar de una gran diversidad de flora.
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.
B1 noun /feɪm/

Fame

fama
Meaning
the condition of being known or talked about by many people
Example
The young actor achieved international fame with his latest movie.
El joven actor alcanzó fama internacional con su última película.
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 /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.
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 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 /fɪst/

Fist

puño; golpe
Meaning
a person's hand when the fingers are bent in toward the palm and held there tightly
Example
He raised his fist in victory after winning the championship match.
Él levantó su puño en victoria después de ganar el campeonato.
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.
C1 noun /ˈfjuː.dʒə.tɪv/

Fugitive

fugitivo
Meaning
a person who has escaped from a place or is in hiding, especially to avoid arrest
Example
The police launched a manhunt to capture the fugitive who escaped from prison.
La policía lanzó una búsqueda para capturar al fugitivo que escapó de la prisión.
C1 noun ˈflɔː.rə ænd ˈfɔː.nə

flora and fauna

flora y fauna
Meaning
The plants and animals of a particular region, habitat, or geological period.
Example
The Galápagos Islands have unique flora and fauna.
Las Islas Galápagos tienen una flora y fauna únicas.
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.
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.