frontier
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B2 noun /ˈfrʌn.tɪər/

frontier

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.
C2 noun /ˈfɔːrˌseɪl/

foresail

Meaning
The principal sail set on the foremast of a sailing vessel.
Example
The crew adjusted the foresail to catch the wind.
B2 verb /feɪd/

fade

Meaning
To gradually lose brightness, color, or strength.
Example
The colors of the old photo have started to fade.
C1 verb /fɔːrˈseɪk/

forsake

Meaning
to abandon or give up something or someone
Example
He decided not to forsake his old friends despite his success.
B1 noun /feɪθ/

Faith

Meaning
complete trust or confidence in someone or something; strong belief in religion
Example
She had unwavering faith in her team's ability to succeed.
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.
B2 adjective /ˈfɛdərəl/

federal

Meaning
Relating to the central government of a federation.
Example
The federal government passed a new law on healthcare.
C1 noun /ˈfoʊk.lɔːr/

folk-lore

Meaning
The traditional beliefs, customs, stories, songs, and practices of a community, passed down through generations.
Example
Bangladeshi folk-lore is rich with myths and legends.
C1 noun /ˌfɪɡjʊˈriːn/

figurine

Meaning
a small ornamental statue or model of a human or animal
Example
She bought a porcelain figurine of a dancing ballerina.
A1 number /ˌfɪfˈtiːn/

fifteen

Meaning
the number 15
Example
There are fifteen students in the class.
A2 noun /ˈfer.i.teɪl/

Fairy-tale

Meaning
a children's story about magical and imaginary beings and lands
Example
Children love listening to fairy-tales before bedtime.
B2 noun /ˈfræɡ.mənt/

Fragment

Meaning
a small part broken or separated off something; an incomplete or isolated portion
Example
Archaeologists found fragments of ancient pottery buried in the soil.
A1 noun /ˈfraɪ.deɪ/

friday

Meaning
the day of the week following Thursday and preceding Saturday
Example
We have a team meeting every Friday afternoon.
B1 noun /foʊk/

folk

Meaning
people in general, often referring to a group or community
Example
Country folk often live a simple life.
C2 verb /ˈfjuːmɪˌɡeɪt/

fumigate

Meaning
to disinfect or purify an area by using chemical fumes
Example
They fumigated the warehouse to kill the insects.
C1 verb /ˈflaʊndər/

flounder

Meaning
To struggle or stagger clumsily; to experience difficulty or confusion.
Example
He floundered in the interview when asked difficult questions.
C2 adjective /ˈfæn.sɪ.ləs/

fanciless

Meaning
without imagination or creativity; plain or ordinary
Example
His drawings were simple and fanciless.
C2 noun /fækˈsɪmɪli/

facsimile

Meaning
an exact copy or reproduction of a document
Example
He sent a facsimile of the contract to the client.
C1 noun /fəˈsɑːd/

facade

Meaning
The front of a building; a false or superficial appearance
Example
The building's glass facade reflected the sunset.
C2 noun /fləˈtɪlə/

flotilla

Meaning
A small fleet of ships or boats operating together.
Example
A flotilla of fishing boats left the harbor at dawn.
C2 adjective /ˈfiːkənd/

fecund

Meaning
producing or capable of producing an abundance of offspring or new growth; fertile
Example
The fecund soil produced a bountiful harvest this year.
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.
B2 adjective /ˈfruːt.fəl/

Fruitful

Meaning
productive; beneficial; successful;
Example
Our discussion was very fruitful and led to many new ideas.
C2 adjective /ˈfiːbraɪl/

febrile

Meaning
having or showing the symptoms of a fever; or highly excitable or agitated
Example
The patient was in a febrile state with high temperature.
A2 noun /fæt/

Fat

Meaning
a natural oily substance occurring in animal bodies; lipid used in cooking
Example
Too much fat in your diet can be unhealthy.
C2 adjective /fəˈlɪsɪtəs/

felicitous

Meaning
well-chosen, appropriate, or pleasing; marked by good fortune or happiness
Example
She made a felicitous remark that lightened the mood.
C2 noun /ˌfjuːzɪˈleɪd/

fusillade

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.
C1 adjective ˈfɔːr.mɪ.də.bəl

formidable

Meaning
Inspiring fear or respect through being impressively large, powerful, intense, or capable.
Example
The boxer was a formidable opponent in the ring.
B2 noun /ˈfɪlmˌmeɪkər/

filmmaker

Meaning
a person who makes films, typically as a profession
Example
He is a well-known filmmaker in the industry.
C2 verb /fɔːrˈdʒʌdʒ/

forejudge

Meaning
To judge beforehand without adequate information.
Example
It is unfair to forejudge someone without knowing the facts.
A1 verb /ˈfɪnɪʃ/

finish

Meaning
to complete or bring to an end; to reach the final point
Example
She finished her homework before dinner.
C1 noun /ˈfoʊliɪdʒ/

foliage

Meaning
The leaves of a plant, collectively.
Example
The autumn foliage looked stunning in the park.
A1 noun ˈflaʊərz

Flowers

Meaning
The reproductive structures of plants that provide nectar for butterflies.
Example
Butterflies are attracted to colorful flowers.
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.
B2 noun /faɪˈnæn.ʃəl rɪˌspɒn.sɪˈbɪl.ə.ti/

financial responsibility

Meaning
The practice of managing money and other financial resources in a responsible and effective manner.
Example
Financial responsibility ensures long-term economic stability.
A2 adjective /fer/

Fair

Meaning
just and reasonable; treating people equally; light in color; attractive
Example
The judge made a fair decision in the case.
C1 noun /fɪkˈseɪ.ʃən/

fixation

Meaning
An obsessive interest in or feeling about someone or something.
Example
His fixation on perfectionism delayed project completion.
A1 noun ˈfjuː.tʃər

future

Meaning
The time or a period of time following the moment of speaking or writing; time regarded as still to come.
Example
Future projects depend on strategic planning.
B2 noun /fʌs/

Fuss

Meaning
unnecessary worry or bother about something; agitated excitement over a trivial matter
Example
She made such a fuss about the small stain on her dress that everyone noticed.
C1 verb /flɔːnt/

flaunt

Meaning
to show off something proudly, often to attract attention
Example
She likes to flaunt her new jewelry at parties.
B2 noun /ˌfer.ˈwel/

Farewell

Meaning
an act of parting or of marking someone's departure
Example
The company organized a farewell party for the retiring manager.
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.
B2 noun /ˈfrɛʃnəs/

freshness

Meaning
The quality of being new, clean, and full of energy.
Example
The freshness of the morning air made everyone feel alive.
C1 verb /ˈfrɒlɪk/

frolic

Meaning
to play and move about cheerfully, energetically, or playfully
Example
The children frolicked in the garden all afternoon.
B1 noun /fəˈsɪl.ɪ.ti/

facility

Meaning
A place, amenity, or piece of equipment provided for a particular purpose.
Example
The facility was well-maintained.
A1 noun /ˈfɑːðər/

father

Meaning
A male parent of a child.
Example
His father taught him how to ride a bicycle.
C1 noun /fæd/

fad

Meaning
a temporary fashion or trend; a short-lived craze
Example
The new diet became a popular fad among teenagers.
C1 adjective /ˈfɔːrmətɪv/

formative

Meaning
Having a lasting influence on a person's development or character.
Example
Childhood is often described as a formative stage in life.
B2 noun fəˈtɪl.ɪ.ti

fertility

Meaning
The quality of being fertile; fruitfulness.
Example
Fertility of the soil is crucial for farming.
C1 verb /flaʊt/

flout

Meaning
To openly disregard or show contempt for a rule or law.
Example
The company was fined for flouting environmental regulations.
B1 noun /ˈfaɪəˌfaɪtə/

firefighter

Meaning
a person whose job is to put out fires
Example
The firefighter saved the family from the burning building.
A2 adjective, adverb /ˈfʊl taɪm/

full-time

Meaning
working or studying for the whole standard period of time
Example
She works full-time as a teacher.
B2 verb /ˈfæs.ɪ.neɪt/

fascinate

Meaning
to attract and hold the attention of someone; to charm or captivate
Example
The magician's performance fascinated the audience.
C2 adjective /ˈfɜːr.vɪd/

Fervid

Meaning
passionate; intensely enthusiastic; burning with emotion
Example
She gave a fervid speech about environmental protection.
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.
C1 verb /fɔːrˈɡoʊ/

forgo

Meaning
to decide not to do or have something
Example
She decided to forgo dessert to maintain her diet.
C1 noun /faɪˈnælɪti/

finality

Meaning
the quality of being final or irreversible; a sense of conclusiveness
Example
The judge's decision gave the case a sense of finality.
B2 verb /fʊlˈfɪl/

fulfill

Meaning
to complete or accomplish something, especially a task or promise
Example
He worked hard to fulfill his dreams.
C2 noun /ˈfɜːrlɔːŋ/

furlong

Meaning
a unit of distance equal to 220 yards or about 201 meters
Example
The horse ran a furlong before slowing down.
A1 noun/verb /fɪʃ/

fish

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.
C2 adverb /ˌfɔːrθˈwɪθ/

Forthwith

Meaning
immediately; without delay; at once
Example
The manager ordered the employee to stop the unsafe practice forthwith.
C1 noun /ˈfʌŋɡəs/

fungus

Meaning
a spore-producing organism feeding on organic matter, including molds, yeast, and mushrooms
Example
A strange fungus was growing on the old tree.
C1 adjective /ˈfleɪɡrənt/

flagrant

Meaning
shockingly noticeable or evident; glaringly wrong
Example
It was a flagrant violation of the rules.
B2 noun /ˈfaɪbər/

fiber

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.
B2 adjective /flɔːd/

flawed

Meaning
having a mistake or fault that reduces its value or quality
Example
The flawed design of the car led to a recall.
B1 noun /ˈfjuː.əl/

Fuel

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.
B2 verb /fɔɪl/

foil

Meaning
To prevent something (especially a plan) from succeeding.
Example
The police foiled the robbery attempt.
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.
A1 noun /faɪər/

Fire

Meaning
combustion or burning, in which substances combine chemically with oxygen from the air
Example
The fire in the fireplace provided warmth and a cozy atmosphere.
C2 adjective /ˈfʊl.səm/

fulsome

Meaning
Excessively flattering or insincere; abundant or generous in amount.
Example
He offered fulsome praise to his boss.
C2 noun /ˈfɛndər/

fender

Meaning
a part of a vehicle that frames a wheel well to protect against mud or debris
Example
The car's fender was dented in the accident.
A2 verb /friːz/

freeze

Meaning
to become solid due to cold; to preserve by cold
Example
Water freezes at zero degrees Celsius.
C1 noun /ˈfɔː.nə/

fauna

Meaning
The animal life of a particular region, habitat, or geological period.
Example
The fauna of the African savannah includes lions and elephants.
B2 noun /ˈfrɪkʃən/

friction

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.
A1 preposition /frəm/ or /frʌm/

from

Meaning
Used to indicate the starting point of a journey, action, or source.
Example
She came from Dhaka to visit her family.
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.
C1 adjective /ˈflæɡɪŋ/

flagging

Meaning
becoming tired, weaker, or less enthusiastic
Example
After hours of work, his energy was flagging.
B2 adverb /ˈfræŋkli/

Frankly

Meaning
honestly; openly; in a direct manner
Example
Frankly, I think this plan needs more consideration.
C1 noun /ˈfren.zi/

Frenzy

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.
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.
A2 noun /fɒks/

Fox

Meaning
a wild animal related to dogs, with a pointed face and thick fur
Example
The red fox is known for its cunning nature.
B2 noun/verb /flɑːk/

flock

Meaning
a group of birds or animals; to gather or move in a crowd
Example
Tourists flocked to the beach during summer.
C2 verb /flɪt/

flit

Meaning
to move quickly and lightly from one place to another
Example
Butterflies flitted from flower to flower.
C1 noun /fɔːrˈkloʊʒər/

foreclosure

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.
B1 noun /ˈfʌndɪŋ/

funding

Meaning
financial support for a project or organization
Example
The startup is seeking funding from investors.
A2 adjective /fænˈtæstɪk/

Fantastic

Meaning
extremely good; wonderful; excellent
Example
The movie was absolutely fantastic!
C1 noun /ˈflɔː.rə/

flora

Meaning
The plant life found in a particular region or habitat.
Example
The Amazon rainforest is home to a vast flora diversity.
C2 noun /ˈfjʊr.ʌŋ.kəl/

Furuncle

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.
C1 adjective /flæmˈbɔɪənt/

flamboyant

Meaning
showy, strikingly bold or colorful; confident and lively
Example
His flamboyant style drew everyone's attention at the party.
B2 noun /frɔːd/

Fraud

Meaning
wrongful or criminal deception intended to result in financial or personal gain
Example
The company was investigated for credit card fraud and money laundering.
C2 noun /ˈfuːləri/

foolery

Meaning
Silly or foolish behavior or actions.
Example
His constant foolery made the meeting hard to take seriously.
B2 noun fəˈtiːɡ

fatigue

Meaning
Physical or mental exhaustion due to prolonged exertion or mental stress
Example
Lack of sleep leads to extreme fatigue.
A1 adjective /ˈfʌn.i/

Funny

Meaning
humorous; strange; amusing;
Example
He told a funny joke that made everyone laugh.
B2 adjective /ˈflɔːrəl/

floral

Meaning
Relating to flowers or decorated with flowers.
Example
She wore a beautiful floral dress to the party.
B2 verb /ˈfɪltər/

filter

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.
C2 noun /frɒnd/

frond

Meaning
A large, divided leaf of a fern, palm, or similar plant.
Example
The fern's frond stretched gracefully over the garden path.
C1 noun /ˈfjʊərɔːr/

furor

Meaning
An outbreak of public anger or excitement.
Example
The politician's remarks created a furor in the media.
C2 adjective /fjuːˈɡeɪʃəs/

fugacious

Meaning
Lasting only a short time; fleeting or ephemeral.
Example
Youth is beautiful but fugacious.
C2 noun /ˈfoʊksl/

forecastle

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.
C2 adjective /ˈfɛstəl/

festal

Meaning
relating to a festival or celebration
Example
The hall was decorated in a festal manner for the wedding.
A2 verb /faʊnd/

found

Meaning
to establish or create something; to discover
Example
They founded the company in 1995.
C1 verb /ˈfɔːrtɪˌfaɪ/

fortify

Meaning
To strengthen a place, person, or thing physically or mentally.
Example
They fortified the city walls to protect against invasion.
C2 noun /ˈfɔːrˌpiːk/

forepeak

Meaning
The compartment in the forward part of a ship, often used for storage.
Example
The sailors stored extra ropes in the forepeak.
B2 noun /ˈfriːˌlænsər/

freelancer

Meaning
A person who works independently without being permanently employed by one organization.
Example
She works as a freelancer designing websites for different clients.
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.
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.
C1 adjective /ˈfɔːrθˌraɪt/

forthright

Meaning
Direct and honest in speech or behavior; straightforward.
Example
She was forthright in her criticism of the policy.
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.
A2 verb /fɪks/

fix

Meaning
To repair or make something work again.
Example
The mechanic fixed the broken car.
C1 noun /ˈfɔːrˌrʌnər/

forerunner

Meaning
A person or thing that comes before another; a predecessor or harbinger.
Example
The Wright brothers were the forerunners of modern aviation.
A2 adverb /ˈfaɪ.nəl.i/

Finally

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.
C2 noun /ˈfetiʃ/

fetich

Meaning
an object believed to have magical powers or to be inhabited by a spirit
Example
The villagers treated the statue as a powerful fetich.
C2 adjective /ˈfraɪəbl/

friable

Meaning
Easily crumbled or reduced to powder.
Example
The old brick wall was friable and broke apart at a touch.
B2 noun /fɔːrˈmeɪʃən/

formation

Meaning
the action of forming or process of being formed
Example
The formation of the new company took several months.
C2 noun /ˈfɔɪbəl/

foible

Meaning
A minor weakness or eccentricity in someone's character.
Example
She loved him despite his little foibles.
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.
C2 adjective /ˈfluːtɪd/

fluted

Meaning
having grooves or ridges, often for decoration
Example
The vase had a beautiful fluted design around the rim.
C1 adjective /ˈfeɪt.fəl/

fateful

Meaning
having significant or disastrous consequences
Example
Their fateful decision changed the course of history.
A1 noun /ˈfæməli/

family

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.
B1 adjective /faɪˈnænʃəl/

financial

Meaning
relating to money, banking, or finance
Example
He made a sound financial decision by investing wisely.
C2 verb /fɔrˈswɛr/

forswear

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