Furuncle
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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.
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.
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.
A2 noun /fluː/

flu

gripe
Meaning
a contagious viral illness causing fever, aches, and respiratory symptoms; influenza
Example
She stayed home because she had the flu.
Se quedó en casa porque tenía gripe.
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 /ˈfætʃuəs/

fatuous

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

flippant

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

feckless

inepto, irresponsable
Meaning
lacking initiative or strength of character; irresponsible
Example
His feckless attitude at work caused several missed deadlines.
Su actitud inepta en el trabajo causó varios plazos perdidos.
C1 noun /fɪˈnænʃɪər/

financier

financista
Meaning
a person who manages large amounts of money or investments
Example
The financier advised the company on its investments.
El financista asesoró a la empresa sobre sus inversiones.
C2 adjective /ˈfuːlˌhɑːrdi/

foolhardy

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

filly

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

forejudge

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

fluted

ranurado
Meaning
having grooves or ridges, often for decoration
Example
The vase had a beautiful fluted design around the rim.
El jarrón tenía un hermoso diseño ranurado alrededor del borde.
C2 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 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.
B2 verb ˈfɔːr.mjə.leɪt

formulate

formular
Meaning
To create or develop a plan or idea clearly and specifically, to construct an idea or strategy clearly.
Example
The company must formulate a strategy for expansion.
La empresa debe formular una estrategia para la expansión.
C1 adjective /freɪl/

frail

débil
Meaning
Physically weak and delicate.
Example
The old man was too frail to walk without help.
El anciano estaba demasiado débil para caminar sin ayuda.
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.
A1 number /ˌfɪfˈtiːn/

fifteen

quince
Meaning
the number 15
Example
There are fifteen students in the class.
Hay quince estudiantes en la clase.
C2 noun /ˈfrɛs.koʊ/

fresco

fresco
Meaning
A painting done rapidly in watercolor on wet plaster so that the colors penetrate the surface
Example
The church walls were decorated with beautiful frescoes.
Las paredes de la iglesia estaban decoradas con hermosos frescos.
A2 adjective /fænˈtæstɪk/

Fantastic

fantástico; maravilloso; excelente
Meaning
extremely good; wonderful; excellent
Example
The movie was absolutely fantastic!
¡La película fue absolutamente fantástica!
C1 adjective /ˈfiːlaɪn/

feline

relacionado con los gatos
Meaning
relating to or characteristic of cats
Example
Her movements were graceful and almost feline in their elegance.
Sus movimientos eran gráciles y casi felinos en su elegancia.
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.
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.
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.
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.
C2 noun /ˈfriːˌmeɪsən/

freemason

francmasón miembro
Meaning
A member of an international fraternity known as Freemasonry, focused on moral and spiritual values.
Example
His grandfather was a respected freemason in the community.
Su abuelo era un respetado francmasón en la comunidad.
C2 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.
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.
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.
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.
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.
B2 noun ˈfrʌn.tɪərz

frontiers

fronteras
Meaning
The extreme limit of settled land beyond which lies wilderness; the limits of knowledge or achievement in a particular field.
Example
The project pushes the frontiers of space exploration.
El proyecto expande las fronteras de la exploración espacial.
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.
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.
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.
C1 noun /ˈfɔːrˌrʌnər/

forerunner

precursor
Meaning
A person or thing that comes before another; a predecessor or harbinger.
Example
The Wright brothers were the forerunners of modern aviation.
Los hermanos Wright fueron los precursores de la aviación moderna.
B2 noun /ˈfaɪbər/

fiber

fibra
Meaning
a thread or filament from which a textile is formed; dietary substance from plants that aids digestion
Example
Fruits and vegetables are high in fiber.
Las frutas y verduras son ricas en fibra.
B1 adjective /ˈfæbjələs/

Fabulous

fabuloso; increíble; extraordinario
Meaning
extremely good; wonderful; extraordinary
Example
She wore a fabulous dress to the party.
Ella llevaba un vestido fabuloso a la fiesta.
C2 noun /flɔːˈrɛsəns/

florescence

florecimiento
Meaning
The process, state, or period of flowering.
Example
The garden reached its peak florescence in spring.
El jardín alcanzó su punto máximo de florecimiento en primavera.
B1 noun /fəˈsɪl.ɪ.ti/

facility

instalación
Meaning
A place, amenity, or piece of equipment provided for a particular purpose.
Example
The facility was well-maintained.
La instalación estaba bien mantenida.
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.
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.
A1 noun /fʌn/

fun

diversión
Meaning
enjoyment, amusement, or light-hearted pleasure
Example
We had a lot of fun at the party.
Nos divertimos mucho en la fiesta.
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.
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.
C2 adjective/adverb /feɪn/

fain

gustosamente, con gusto
Meaning
gladly, willingly, or with pleasure
Example
I would fain help you if I had the time.
Si tuviera tiempo, con gusto te ayudaría.
B1 adjective /ˈfrʌstreɪtɪŋ/

frustrating

frustrante
Meaning
causing annoyance or dissatisfaction
Example
The slow internet connection was really frustrating.
La conexión de internet lenta fue realmente frustrante.
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.
B2 noun /ˈfaɪ.bər/

fibre

fibra
Meaning
A thread or filament from which a vegetable tissue, mineral substance, or textile is formed; dietary material that aids digestion.
Example
Eating foods rich in fibre can improve your digestion.
Comer alimentos ricos en fibra puede mejorar tu digestión.
C1 adjective /ˈflaʊəri/

flowery

florido / ornamentado
Meaning
Full of flowers or overly elaborate in style or language.
Example
She wrote a flowery letter filled with poetic phrases.
Ella escribió una carta florida llena de frases poéticas.
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.
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.
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.
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 adjective /ˈfʊtˌluːs/

footloose

libre
Meaning
Free to go anywhere or do anything; not tied down by responsibilities.
Example
After graduating, he felt footloose and ready to explore the world.
Después de graduarse, se sintió libre y listo para explorar el mundo.
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.
C1 verb /fɔːˈbɛər/

forbear

abstenerse
Meaning
To refrain from doing something; to show patience or self-control.
Example
She forbore from commenting on his mistake.
Ella se abstuvo de comentar sobre su error.
C2 adjective /ˈfɪnɪki/

finicky

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

Flaccid

flácido; flojo; colapsado;
Meaning
soft and limp; lacking firmness; drooping
Example
The plant's leaves became flaccid after days without water.
Las hojas de la planta se volvieron flácidas después de varios días sin agua.
B2 noun /ˈfjuː.nər.əl/

Funeral

funeral
Meaning
a ceremony typically held shortly after a person's death, usually including burial or cremation
Example
Hundreds of people attended the funeral to pay their respects to the beloved teacher.
Cientos de personas asistieron al funeral para rendir homenaje al querido maestro.
B2 noun/verb /flɑːk/

flock

bandada
Meaning
a group of birds or animals; to gather or move in a crowd
Example
Tourists flocked to the beach during summer.
Los turistas se aglomeraron en la playa durante el verano.
C1 verb /flɔːnt/

flaunt

presumir
Meaning
to show off something proudly, often to attract attention
Example
She likes to flaunt her new jewelry at parties.
A ella le gusta presumir sus nuevas joyas en las fiestas.
A2 noun /fɒks/

Fox

zorro
Meaning
a wild animal related to dogs, with a pointed face and thick fur
Example
The red fox is known for its cunning nature.
El zorro rojo es conocido por su astucia.
C1 verb /ˈfɪdʒɪt/

fidget

moverse inquieto, estar inquieto
Meaning
to make small movements, especially because of nervousness or impatience
Example
The child began to fidget during the long lecture.
El niño empezó a moverse durante la larga conferencia.
B2 noun /ˈfrʌn.tɪər/

frontier

frontera o nuevo campo
Meaning
A new area of activity, knowledge, or development; the edge of knowledge or achievement.
Example
Robotic surgery is exploring a new frontier in medicine.
La cirugía robótica está explorando una nueva frontera en la medicina.
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.
B1 adjective /ˈfrʌstreɪtɪd/

frustrated

frustrado
Meaning
feeling annoyed or upset because of inability to achieve something
Example
She felt frustrated after failing the exam.
Ella se sintió frustrada después de reprobar el examen.
B1 verb /floʊt/

float

flotar
Meaning
to rest or move on the surface of a liquid or in the air without sinking
Example
The boat began to float gently down the river.
El bote comenzó a flotar suavemente por el río.
C2 adjective /ˈfæn.sɪ.ləs/

fanciless

sin imaginación, común
Meaning
without imagination or creativity; plain or ordinary
Example
His drawings were simple and fanciless.
Sus dibujos eran simples y sin imaginación.
C1 noun /ˈfɪʃ.ər/

fissure

fisura
Meaning
a long, narrow opening or crack in a surface or object
Example
The earthquake caused a deep fissure in the road.
El terremoto causó una fisura profunda en la carretera.
C1 adjective /ˈfruːt.ləs/

Fruitless

infructuoso; inútil; fútil;
Meaning
unsuccessful; futile; pointless;
Example
After hours of searching, their efforts proved fruitless.
Después de horas de búsqueda, sus esfuerzos resultaron infructuosos.
C2 noun /ˈflæt.ər.ər/

Flatterer

adulador
Meaning
a person who lavishes praise, often insincerely and in order to gain advantage
Example
The king was surrounded by flatterers who only told him what he wanted to hear.
El rey estaba rodeado de aduladores que solo le decían lo que quería oír.
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.
C2 adjective /ˈfrɪski/

Frisky

vivaz; energético; juguetón; travieso
Meaning
lively; energetic; playful; mischievous
Example
The frisky puppy ran around the garden playfully.
El cachorro juguetón corrió alrededor del jardín de manera juguetona.
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.
A1 numeral /fɔːr/

four

cuatro
Meaning
The number equivalent to the sum of two and two; one more than three.
Example
She has four books on her desk.
Ella tiene cuatro libros en su escritorio.
C1 noun, verb /ˈfɜːrloʊ/

furlough

licencia temporal
Meaning
temporary leave of absence from work, especially that granted to an employee or soldier
Example
Many workers were placed on furlough during the crisis.
Muchos trabajadores fueron puestos en furlough durante la crisis.
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.
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.
B1 adjective /ˈfæʃənəbəl/

fashionable

a la moda
Meaning
Following the latest styles or trends in clothing, behavior, or ideas
Example
She always wears fashionable clothes to every party.
Ella siempre usa ropa fashionables en cada fiesta.
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.
A2 verb ˈfoʊkəs

focus

enfocar
Meaning
To concentrate attention or effort on something; to direct one's attention or efforts towards a particular activity, subject, or problem.
Example
Focus on what truly matters to simplify your life.
Concéñtrate en lo que realmente importa para simplificar tu vida.
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 noun /fɔːrˈmæl.ə.ti/

Formality

formalidad
Meaning
the rigid observance of rules of convention or etiquette; a thing done simply to comply with requirements
Example
The signing of the contract was just a formality; the deal was already agreed upon.
La firma del contrato fue solo una formalidad; el acuerdo ya estaba acordado.
C2 verb /ˈfrɪzəl/

frizzle

freír hasta que se vuelva crujiente y rizado
Meaning
to fry something until it becomes crisp and curled, or to make a sizzling noise
Example
The bacon began to frizzle in the pan.
El tocino comenzó a chisporrotear en la sartén.
C1 adjective /fəˈroʊ.ʃəs/

Ferocious

feroz, salvaje, cruel
Meaning
savagely fierce, cruel, or violent; extremely aggressive
Example
The ferocious storm destroyed many houses in the coastal area.
La feroz tormenta destruyó muchas casas en la zona costera.
C1 noun ˌfræɡ.mənˈteɪ.ʃən

fragmentation

fragmentación
Meaning
The process or state of breaking or being broken into fragments.
Example
Habitat fragmentation threatens many species.
La fragmentación del hábitat amenaza a muchas especies.
A1 verb /faɪnd/

find

encontrar
Meaning
to discover or locate something that was lost or hidden
Example
I can't find my keys anywhere.
No puedo encontrar mis llaves en ninguna parte.
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.
C1 adjective /ˈfleɪɡrənt/

flagrant

escandaloso y claramente erróneo
Meaning
shockingly noticeable or evident; glaringly wrong
Example
It was a flagrant violation of the rules.
Fue una clara violación de las reglas.
B2 verb /ˈfæs.ɪ.neɪt/

fascinate

fascinar
Meaning
to attract and hold the attention of someone; to charm or captivate
Example
The magician's performance fascinated the audience.
La actuación del mago fascinó al público.
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.
C2 noun /ˌfrɪdʒɪˈdɛːriəm/

frigidarium

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

fumigation

fumigación
Meaning
The practice of disinfecting or purifying an area using gas or smoke.
Example
Fumigation is an effective method to control pest infestations.
La fumigación es un método efectivo para controlar las infestaciones de plagas.
B2 noun /flɔː/

flaw

defecto
Meaning
a defect or imperfection in something
Example
The diamond had a small flaw that was barely visible.
El diamante tenía un pequeño defecto que apenas se veía.
A1 verb /fərˈɡet/

forget

olvidar
Meaning
to be unable to remember something; to fail to bring something to mind
Example
Don't forget to lock the door when you leave.
No olvides cerrar la puerta cuando te vayas.
C2 verb /fleɪl/

flail

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

faze

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

foreboding

presagio ominoso
Meaning
A feeling that something bad will happen; ominous.
Example
She felt a deep sense of foreboding as she entered the abandoned house.
Ella sintió una profunda sensación de presagio ominoso al entrar en la casa abandonada.
C2 adjective /ˈfraɪəbl/

friable

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

foolery

necedad
Meaning
Silly or foolish behavior or actions.
Example
His constant foolery made the meeting hard to take seriously.
Su constante necedad hizo que la reunión fuera difícil de tomar en serio.
C1 noun /ˈfoʊliɪdʒ/

foliage

follaje
Meaning
The leaves of a plant, collectively.
Example
The autumn foliage looked stunning in the park.
El follaje de otoño se veía impresionante en el parque.
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.
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.
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.
B2 adjective /ˈfræntɪk/

frantic

desesperado
Meaning
Extremely anxious, hurried, or out of control due to fear or excitement.
Example
She made a frantic call to her family after the accident.
Ella hizo una llamada desesperada a su familia después del accidente.
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.
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 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 adjective /ˈfædɪʃ/

faddish

moda pasajera
Meaning
Following a temporary trend or fashion
Example
Wearing neon clothes was a faddish style in the 1980s.
Usar ropa neón era un estilo pasajero en los años 80.
B2 noun /ˈfjuːʒən/

fusion

fusión
Meaning
the process or result of joining two or more things together to form a single entity
Example
The restaurant offers a unique fusion of Asian and European cuisines.
El restaurante ofrece una fusión única de cocinas asiática y europea.
C2 noun /ˈfɜːrðərəns/

furtherance

avance
Meaning
The advancement or promotion of something.
Example
The new policy was introduced in furtherance of social justice.
La nueva política se introdujo en pro de la justicia social.
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.
C1 verb /feɪn/

feign

fingir, simular
Meaning
to pretend or fake; to give a false appearance of
Example
She feigned illness to avoid going to work.
Ella fingió estar enferma para evitar ir a trabajar.
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 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.
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.
B2 adjective /ˈfɔːrtʃənət/

fortunate

afortunado
Meaning
Having good luck or receiving something desirable by chance.
Example
She was fortunate to escape the accident without injuries.
Ella fue afortunada de escapar del accidente sin heridas.