fathomless
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C2 adjective /ˈfæð.əm.ləs/

fathomless

Meaning
impossible to understand or measure; very deep
Example
The ocean seemed fathomless as it stretched to the horizon.
C2 adjective /ˈfɛkləs/

feckless

Meaning
lacking initiative or strength of character; irresponsible
Example
His feckless attitude at work caused several missed deadlines.
C2 noun /ˈfɜːrnəri/

fernery

Meaning
a place or greenhouse where ferns are cultivated
Example
The garden's fernery was full of exotic plants.
C1 noun, verb /ˈfrænʧaɪz/

franchise

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.
B1 noun flæɡz

flags

Meaning
A piece of cloth or similar material, typically oblong or square, attachable by one edge to a pole or rope.
Example
The streets were decorated with national flags.
B2 noun, verb /ˈfaɪlɪŋ/

filing

Meaning
the act of submitting documents; the process of organizing papers
Example
The lawyer handled the filing of all court documents.
C1 noun /frəˈdʒɪl.ɪ.ti/

fragility

Meaning
The quality of being fragile; delicateness.
Example
The cornea's fragility increases with rubbing.
A2 verb /fraɪ/

fry

Meaning
to cook food in hot oil or fat
Example
She fries eggs for breakfast every morning.
C1 noun /ˈfɔːrˌθɔːt/

forethought

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.
B2 noun /ˈfleɪvər/

flavor

Meaning
The distinctive taste of a food or drink.
Example
This ice cream has a delicious mango flavor.
A1 noun /ˈflaʊər/

flower

Meaning
the seed-bearing part of a plant, often colorful and fragrant, that blossoms
Example
The garden was full of colorful flowers.
C2 adjective /ˈfækʃəs/

factious

Meaning
causing disagreement or division within a group; inclined to form factions
Example
The debate became factious, splitting the committee into rival camps.
B1 adjective /ˈfæsɪneɪtɪŋ/

Fascinating

Meaning
extremely interesting; captivating; enchanting
Example
The documentary about ocean life was fascinating.
C2 noun /feɪt/

fete

Meaning
a celebration or festival, often in honor of someone
Example
The village held a grand fete to celebrate the harvest.
B2 noun /flɛkˈsɪbɪləti/

flexibility

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.
C2 noun /flɔːˈrɛsəns/

florescence

Meaning
The process, state, or period of flowering.
Example
The garden reached its peak florescence in spring.
B2 noun /ˈfækəlti/

faculty

Meaning
an inherent mental or physical ability; a division of a university
Example
She has a remarkable faculty for languages.
B2 adjective /ˈflʌfi/

fluffy

Meaning
soft, light, and airy in texture
Example
She baked a fluffy cake for the party.
B2 verb /fraʊn/

frown

Meaning
to wrinkle one's brow in displeasure or concentration
Example
She frowned when she heard the bad news.
C2 noun /ˈfɔːθ.raɪt.nəs/

forthrightness

Meaning
The quality of being honest and straightforward; directness.
Example
Her forthrightness made her a respected journalist.
C2 verb /frɪsk/

frisk

Meaning
To search a person by patting their clothing to check for concealed items.
Example
The security guard frisked the man at the entrance.
A2 verb /friːz/

freeze

Meaning
to become solid due to cold; to preserve by cold
Example
Water freezes at zero degrees Celsius.
B2 noun /ˌfiː.ɑːnˈseɪ/

Fiance

Meaning
a man who is engaged to be married
Example
Sarah introduced her fiance to her parents during the family dinner.
C1 noun, verb /ˈfɜːrloʊ/

furlough

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.
B2 noun /fluːt/

Flute

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.
C1 adjective, adverb (informal, vulgar) /ˈfʌkɪŋ/

fucking

Meaning
used for emphasis, often expressing anger or frustration (vulgar slang)
Example
It was a fucking disaster!
C1 verb /ˈflʌtər/

flutter

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.
C1 adjective ˈflʌd proʊn

flood-prone

Meaning
Susceptible to flooding; likely to experience floods frequently.
Example
Bangladesh is a flood-prone deltaic nation.
C1 noun /ˈfɔːr.tɪ.tjuːd/

fortitude

Meaning
Courage in pain or adversity; mental and emotional strength in facing difficulty.
Example
She faced adversity with great fortitude.
C2 adjective /fækˈtɪʃəs/

factitious

Meaning
artificial or fabricated; not natural or genuine
Example
The excitement in his story seemed factitious and forced.
B2 adjective /fræŋk/

Frank

Meaning
honest; open; straightforward; candid
Example
She gave me a frank opinion about my presentation.
C1 noun/verb /freɪ/

fray

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.
A1 adjective /ˈfeɪ.məs/

famous

Meaning
Known about by many people; renowned.
Example
This area is famous for its unique heritage.
C2 adjective /fɪˈdjuːʃəl/

fiducial

Meaning
based on trust or confidence; serving as a standard of reference
Example
The fiducial point on the map ensures accurate measurements.
B2 noun fɪkst ˈɪnkʌm

fixed income

Meaning
Investment that provides a return in the form of fixed periodic payments.
Example
Fixed income investments provide reliable returns.
A2 noun, verb /fuːl/

fool

Meaning
a silly or stupid person; to trick someone
Example
He felt like a fool after believing the prank.
B1 noun /ˈfɔːr.tʃən/

Fortune

Meaning
chance or luck as an external, arbitrary force affecting human affairs; a large amount of money or assets
Example
He made his fortune by investing wisely in technology companies.
C2 noun /ˈfiːæt/

fiat

Meaning
an official order or decree; authoritative command
Example
The new policy was enacted by royal fiat.
A1 verb /feɪs/

face

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.
A2 adjective, adverb /ˈfæstər/

faster

Meaning
moving or able to move quickly; more quickly than usual
Example
This car is faster than the old one.
C1 adjective /ˈfjuː.dəl/

feudal

Meaning
relating to the system of feudalism, a medieval social system based on land ownership and obligations
Example
The castle is a remnant of the feudal era.
B2 adjective, noun, verb /faʊl/

foul

Meaning
offensive to the senses; dirty or unpleasant; in sports, an unfair or illegal act
Example
The player was penalized for committing a foul.
C1 noun /ˈfɛləni/

felony

Meaning
a serious crime, usually punishable by imprisonment for more than one year
Example
He was convicted of a felony and sentenced to ten years in prison.
C1 noun /ˌfæb.rɪˈkeɪ.ʃən/

fabrication

Meaning
The invention of false or misleading information; a lie or falsehood.
Example
The article was full of fabrication and misleading claims.
C2 verb /fɔrˈswɛr/

forswear

Meaning
to renounce or reject; to give up completely
Example
He forswore his old habits and started a new life.
B1 verb /fərˈbɪd/

forbid

Meaning
to order someone not to do something
Example
The school forbids smoking on campus.
C2 adjective /ˈfʊtˌluːs/

footloose

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.
C1 adjective /ˈfiːzəbl/

feasible

Meaning
possible to do easily or conveniently; practical and workable
Example
It is feasible to complete the project within two months.
A2 noun /ˈfɪt.nəs/

fitness

Meaning
The condition of being physically fit and healthy, or the quality of being suitable to fulfill a particular role or task.
Example
Fitness tests ensure vehicle safety.
C2 noun /ˈfʌstɪən/

fustian

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.
C2 verb /ˈflædʒəˌleɪt/

flagellate

Meaning
to whip or flog someone, either literally or as a form of punishment or self-discipline
Example
In history, some monks would flagellate themselves as penance.
B2 noun /ˈfeð.ər/

Feather

Meaning
one of the light structures that cover a bird's body
Example
The peacock has beautiful colorful feathers.
C1 noun /fɔːrˈmæl.ə.ti/

Formality

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.
A1 adjective /frɛntʃ/

french

Meaning
Relating to France, its people, or their language.
Example
We enjoyed delicious French cuisine on our trip to Paris.
C1 adjective /ˈfɜːrtɪv/

furtive

Meaning
Attempting to avoid notice or attention, typically because of guilt or a belief that discovery would lead to trouble.
Example
He cast a furtive glance at the door before leaving.
B2 noun ˈflæʃkɑːrdz

flashcards

Meaning
Cards containing small amounts of information, held up for students to see, as an aid to learning.
Example
Flashcards help in quick memorization.
C2 noun /ˈflɪpənsi/

flippancy

Meaning
lack of seriousness; showing a disrespectful or trivial attitude
Example
His flippancy during the meeting offended his colleagues.
B2 noun fəˈtiːɡ

fatigue

Meaning
Physical or mental exhaustion due to prolonged exertion or mental stress
Example
Lack of sleep leads to extreme fatigue.
A2 noun /flaʊər/

Flour

Meaning
fine powder made by grinding wheat or other grains; used for making bread, cakes, and pastry
Example
She mixed flour with water to make dough for bread.
B2 adjective /ˈfeɪvərəbl/

favourable

Meaning
Expressing approval, support, or positivity; advantageous or beneficial
Example
The weather conditions were favourable for the outdoor event.
C1 noun /ˈfɒdər/

fodder

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.
C2 adverb /ˌfɔːrθˈwɪθ/

Forthwith

Meaning
immediately; without delay; at once
Example
The manager ordered the employee to stop the unsafe practice forthwith.
C2 noun /flɛk/

fleck

Meaning
a small spot or mark, often of a different color
Example
There was a fleck of paint on the floor.
C2 verb /ˈfɒn.dəl/

fondle

Meaning
To stroke or caress lovingly or gently.
Example
She fondled the kitten gently in her lap.
A2 noun /ˈfiːtʃər/

feature

Meaning
a distinctive attribute or aspect of something; a characteristic
Example
The new phone has a unique camera feature.
C1 adjective /flæmˈbɔɪənt/

flamboyant

Meaning
showy, strikingly bold or colorful; confident and lively
Example
His flamboyant style drew everyone's attention at the party.
C1 noun /ˈfɪʃˌmʌŋ.ɡər/

fishmonger

Meaning
a person or store that sells fish
Example
I bought fresh salmon from the local fishmonger.
A2 noun /fɪlm ˈæktər/

film actor

Meaning
A person who performs roles in movies or films.
Example
The film actor received widespread acclaim for his performance.
C1 noun /ˈflæt.ər.i/

Flattery

Meaning
excessive and insincere praise, given especially to further one's own interests
Example
His constant flattery made everyone suspicious of his true motives.
A2 number /ˈfɪfti/

fifty

Meaning
the number 50
Example
The stadium can hold fifty thousand people.
C1 verb /fɔːˈbɛər/

forbear

Meaning
To refrain from doing something; to show patience or self-control.
Example
She forbore from commenting on his mistake.
C1 verb/noun ˈfæð.əm

fathom

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.
B1 noun/verb /ˈfaɪtɪŋ/

fighting

Meaning
the act of engaging in a physical or verbal conflict
Example
The soldiers were fighting bravely on the battlefield.
A2 noun /fæn/

Fan

Meaning
a person who has a strong interest in or admiration for a particular person or thing; a device for creating air current
Example
She is a huge fan of classical music and attends every concert in the city.
C1 noun /fiːt/

feat

Meaning
an achievement that requires great courage, skill, or strength
Example
Climbing Mount Everest was a remarkable feat.
A1 adjective /fʊl/

full

Meaning
Containing as much or as many as possible; complete.
Example
The glass is full of water.
B2 verb ˈfɔːr.mjə.leɪt

formulate

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.
A2 noun /ˈfɪʃ.ər.mən/

Fisherman

Meaning
a person who catches fish as a job or hobby
Example
The fisherman caught three large fish in the river today.
C1 noun /ˈfræk.tʃər/

Fracture

Meaning
the cracking or breaking of a hard object or material; a break in a bone
Example
The doctor confirmed that he had a hairline fracture in his wrist.
C2 verb /frɪz/

frizz

Meaning
to form into small, tight curls or cause hair to become fuzzy and tangled
Example
The humid weather caused her hair to frizz.
C2 noun /ˈfɔːrʃɔːr/

foreshore

Meaning
The part of the shore between the high and low tide marks
Example
Children were playing on the foreshore, collecting shells.
B2 adverb /ˌfʌndəˈmɛntəli/

fundamentally

Meaning
in a basic and important way; at the core
Example
The two theories are fundamentally different.
C2 verb /fɪˈneɪɡəl/

finagle

Meaning
to obtain something by cleverness or trickery
Example
He finagled a free ticket by pretending to be a VIP guest.
A2 noun /fluː/

flu

Meaning
a contagious viral illness causing fever, aches, and respiratory symptoms; influenza
Example
She stayed home because she had the flu.
C2 noun /floʊ/

floe

Meaning
a large sheet of floating ice
Example
The polar bears rested on the ice floe.
C2 verb /ˌfɔːrˈrʌn/

forerun

Meaning
To go before; to precede in time, place, or action.
Example
Dark clouds often forerun a storm.
C1 noun /fruːˈɡæl.ə.ti/

frugality

Meaning
The quality of being economical in use or expenditure; not wasteful.
Example
Frugality is essential for saving money effectively.
B1 adjective /ˈfrʌstreɪtɪd/

frustrated

Meaning
feeling annoyed or upset because of inability to achieve something
Example
She felt frustrated after failing the exam.
C2 adjective fəˈleɪ.ʃəs

fallacious

Meaning
Based on false reasoning or misleading arguments.
Example
His argument was based on fallacious reasoning.
C2 noun /ˈflætʃələns/

flatulence

Meaning
the accumulation of gas in the digestive system; excessive gas in the stomach or intestines
Example
Eating beans can sometimes cause flatulence.
A1 adverb /fɑːr/

far

Meaning
at, to, or by a great distance
Example
The school is far from my house.
C2 noun /ˈfoʊ.li.oʊ/

folio

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.
C2 noun /ˈfrækɑː/

fracas

Meaning
A noisy disturbance or quarrel.
Example
The fracas outside the bar drew the attention of the police.
B2 noun ˈfreɪm.wɜːk

framework

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.
C2 adjective /ˈfraʊzi/

frowsy

Meaning
Scruffy and neglected in appearance; musty or stale in smell.
Example
He wore a frowsy old jacket that smelled of damp.
B1 noun /fæts/

fats

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.
C1 adjective /ˈfæn.sɪ.fəl/

fanciful

Meaning
overimaginative, unrealistic, or whimsical
Example
The story was too fanciful to be true.
A2 noun /frɪdʒ/

fridge

Meaning
a household appliance used to keep food and drinks cold to preserve freshness
Example
I put the milk back in the fridge after breakfast.
A2 noun /fɑːrm/

farm

Meaning
an area of land used for growing crops and raising animals
Example
They live on a farm with many animals.
A2 adjective, noun /ˈfeɪvərɪt/

favorite

Meaning
Preferred over all others; something or someone especially liked.
Example
Chocolate is my favorite ice cream flavor.
C1 verb /ˈfɔːlsɪfaɪ/

falsify

Meaning
to make something false or to misrepresent
Example
He tried to falsify the documents to avoid taxes.
C1 noun, verb /ˈfɛrɪt/

ferret

Meaning
a small domesticated animal used for hunting; to search or uncover something persistently
Example
He ferreted out the hidden documents.
B2 verb /ˈflʌrɪʃ/

flourish

Meaning
To grow or develop in a healthy or successful way.
Example
Her business began to flourish after she introduced online sales.
B2 noun ˈflaɪ.ɪŋ kɑːrz

flying cars

Meaning
Vehicles that can travel both on roads and in the air.
Example
Flying cars could soon solve urban traffic congestion.
A2 noun /faɪl/

File

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.
B1 noun /flæʃ/

Flash

Meaning
a sudden brief burst of bright light; a very brief moment
Example
There was a bright flash of lightning followed by thunder.
C1 verb ˈflʌk.tʃu.eɪt

fluctuate

Meaning
To regularly increase or decrease.
Example
Stock prices fluctuate due to market conditions.
B2 adjective /ˈfræntɪk/

frantic

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.
A1 number /ˌfɪfˈtiːn/

fifteen

Meaning
the number 15
Example
There are fifteen students in the class.
C2 noun /fiːf/

fief

Meaning
an estate of land held under the feudal system; a domain or area of control
Example
The knight was granted a fief by the lord for his service.
C2 noun ˌfjuːmɪˈɡeɪʃən

fumigation

Meaning
The practice of disinfecting or purifying an area using gas or smoke.
Example
Fumigation is an effective method to control pest infestations.
C1 noun /ˈfænsiər/

fancier

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.
B1 verb /floʊt/

float

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.
B1 adjective /ˈfæbjələs/

Fabulous

Meaning
extremely good; wonderful; extraordinary
Example
She wore a fabulous dress to the party.
A1 noun/verb /fɪlm/

film

Meaning
a motion picture or movie; or to record on camera
Example
They watched a film together on the weekend.
A2 noun /fækt/

fact

Meaning
A thing that is known or proved to be true
Example
It is a fact that the Earth orbits the Sun.
B1 adverb /ˈfriːli/

Freely

Meaning
without restriction; openly; willingly
Example
She spoke freely about her experiences during the interview.
B2 noun /feɪt/

Fate

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.
C2 adjective /ˈflʌməksd/

flummoxed

Meaning
Completely confused or bewildered.
Example
He looked flummoxed after hearing the strange question.
C2 adjective /ˈfrɪski/

Frisky

Meaning
lively; energetic; playful; mischievous
Example
The frisky puppy ran around the garden playfully.
B2 adjective /fɔːrˈsiːəbl/

foreseeable

Meaning
Able to be predicted or expected in advance
Example
The company is unlikely to make changes in the foreseeable future.