fervent
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C1 adjective /ˈfɜːr.vənt/

fervent

情熱的な、熱心な
Meaning
having or showing intense passion or enthusiasm
Example
She gave a fervent speech about climate change.
彼女は気候変動について情熱的なスピーチを行った。
A1 preposition /fɔːr/

for

のために
Meaning
used to indicate purpose, destination, or recipient
Example
This gift is for you.
このギフトはあなたのためです。
C2 adjective /ˈfrɪski/

Frisky

活発な; エネルギッシュな; 遊び好きな; いたずら好きな
Meaning
lively; energetic; playful; mischievous
Example
The frisky puppy ran around the garden playfully.
その元気な子犬は庭で遊びながら走り回っていました。
C2 adjective /ˈfæsaɪl/

Facile

簡単な; 浅薄な; 深みのない
Meaning
easily achieved; superficial; lacking depth
Example
His facile explanation didn't address the real problem.
彼の簡単な説明は実際の問題に対処しませんでした。
A1 numeral /fɔːr/

four

四
Meaning
The number equivalent to the sum of two and two; one more than three.
Example
She has four books on her desk.
彼女の机には四冊の本があります。
B2 noun /ˈfɔːrmjələ/

formula

公式
Meaning
a fixed method for doing something; a mathematical or chemical rule expressed in symbols
Example
The scientist discovered a new formula for the medicine.
科学者は新しい薬の公式を発見しました。
C2 noun /ˈfriːˌbuːtər/

freebooter

海賊
Meaning
A pirate or plunderer who roams freely in search of wealth.
Example
The freebooter raided the merchant ships along the coast.
海賊は沿岸の商船を襲った。
C2 noun /ˈfiːæt/

fiat

命令、布告
Meaning
an official order or decree; authoritative command
Example
The new policy was enacted by royal fiat.
新しい政策は王の命令で実施されました。
C2 adjective /ˈfrəʊərd/

froward

頑固な
Meaning
Difficult to deal with; contrary and disobedient.
Example
The teacher found the froward child hard to manage.
教師は頑固な子供を扱うのが難しいと感じた。
C1 adjective /ˈfruː.ɡəl/

Frugal

節約的; 倹約的
Meaning
economical; thrifty;
Example
She is very frugal and saves money by buying only necessary items.
彼女はとても倹約的で、必要な物だけを買ってお金を節約しています。
B2 adverb /ˈfɜ:rmli/

Firmly

しっかりと
Meaning
in a strong, steady, and unwavering manner
Example
She firmly believed in her decision.
彼女は自分の決定に固く信じていた。
B2 noun /ˈfrʌn.tɪər/

frontier

境界または新しい分野
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.
ロボット手術は医学の新しいフロンティアを探求しています。
B2 noun/verb /ˈfɒs.tər.ɪŋ/

fostering

育成
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.
良い教師は学生の創造性を育む上で重要な役割を果たします。
C2 verb /ˈfrɪtər/

fritter

浪費する
Meaning
To waste time, money, or energy on trivial matters.
Example
He frittered away his savings on unnecessary gadgets.
彼は無駄にお金を浪費しました。
C1 noun /fɪˈnænʃɪər/

financier

金融家
Meaning
a person who manages large amounts of money or investments
Example
The financier advised the company on its investments.
金融家は会社に投資に関するアドバイスをしました。
C2 noun /ˈfɛndər/

fender

フェンダー
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.
車のフェンダーは事故でへこんでしまいました。
C1 adverb /ˈfɪksɪdli/

Fixedly

固定的に
Meaning
in a steady, unmoving manner; with intense concentration
Example
He stared fixedly at the painting.
彼は絵を固定的に見つめていた。
C1 noun /ˈfɛlən/

felon

犯罪者
Meaning
a person who has committed a serious crime
Example
The felon was sentenced to ten years in prison.
犯罪者は10年の刑を言い渡された。
C2 noun /foʊ ˈpɑː/

faux pas

社会的な失敗
Meaning
a social blunder or mistake in etiquette
Example
He committed a major faux pas by forgetting her birthday.
彼は彼女の誕生日を忘れて大きな社会的な失敗を犯した。
C2 verb /fleɪ/

flay

皮を剥ぐ/厳しく批判する
Meaning
to strip off the skin of something or criticize severely
Example
The chef flayed the fish before cooking it.
シェフは魚を料理する前に皮を剥ぎました。
C1 noun /ˈfɪʃˌmʌŋ.ɡər/

fishmonger

魚屋
Meaning
a person or store that sells fish
Example
I bought fresh salmon from the local fishmonger.
私は地元の魚屋で新鮮なサーモンを買いました。
C2 noun /ˈfoʊksl/

forecastle

フォアキャッスル
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.
船員たちはシフト後にフォアキャッスルに集まりました。
C2 noun /ˈfɔːltˌfaɪndər/

faultfinder

欠点探し人
Meaning
a person who habitually finds fault with others
Example
He is such a faultfinder that nothing anyone does is ever good enough.
彼は欠点探し人で、誰かが何かをしても決して十分ではありません。
B2 noun /ˈfer.i boʊt/

Ferry-boat

フェリー
Meaning
a boat that carries passengers and vehicles across water
Example
We took the ferry-boat to cross the river.
私たちは川を渡るためにフェリー・ボートに乗りました。
B2 noun /feɪt/

Fate

運命
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.
多くの人々は運命が彼らの人生の進行方向を決定すると信じています。
B1 noun /ˈfɪnɪʃ laɪn/

finish line

ゴールライン
Meaning
The line or point at the end of a race or competition where participants complete it.
Example
She sprinted towards the finish line and won the race.
彼女はフィニッシュラインに向かって全力で走り、レースに勝った。
B1 noun, verb /ˈfaɪ.næns/ or /fəˈnæns/

finance

ファイナンス
Meaning
the management of money and investments, or to provide funds for something
Example
The company secured finance from a major bank.
その会社は大手銀行から資金を調達しました。
A2 adverb/adjective/verb /ˈfɜːrðər/

further

進める
Meaning
At a greater distance; to advance or promote something.
Example
She studied hard to further her career.
彼女はキャリアを進めるために一生懸命勉強した。
A2 verb /fɪks/

fix

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

facet

側面, 部分, 特徴
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.
プロジェクトの各側面は慎重に分析されました。
C1 noun ˌfiː.zəˈbɪl.ə.ti

feasibility

実現可能性
Meaning
The state or degree of being easily or conveniently done; possibility.
Example
The company conducted a feasibility study before launching the project.
会社はプロジェクトを開始する前に実現可能性調査を行った。
B2 noun /ˈfæbrɪk/

fabric

布地
Meaning
Cloth or material produced by weaving or knitting fibers.
Example
The tailor used silk fabric to make the dress.
仕立て屋はドレスを作るために絹の布地を使いました。
C2 verb /ˈflædʒəˌleɪt/

flagellate

鞭打つ、または罰として自分を鞭打つ
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.
歴史の中で、一部の修道士は悔い改めとして自分をフラジェレイトしていた。
A2 noun /ˈfɑː.loʊ.ɪŋ/

following

フォロワー
Meaning
a group of supporters or people who admire something or someone
Example
The singer has a large following around the world.
その歌手は世界中に多くのフォロワーを持っています。
C2 adjective /fjuːˈɡeɪʃəs/

fugacious

儚い
Meaning
Lasting only a short time; fleeting or ephemeral.
Example
Youth is beautiful but fugacious.
青春は美しいが、儚い。
A2 verb /faɪt/

fight

戦う
Meaning
to engage in battle or combat; to struggle against
Example
The soldiers fight for their country.
兵士たちは自国のために戦っています。
B1 adjective /ˈfluː.ənt/

Fluent

流暢; 熟練
Meaning
able to speak a language easily and accurately; flowing smoothly and gracefully
Example
She is fluent in three languages including English and French.
彼女は英語とフランス語を含む3つの言語に堪能です。
B1 noun faʊnˈdeɪʃən

foundation

基礎
Meaning
The lowest load-bearing part of a building, typically below ground level.
Example
The foundation of the building was laid with strong materials.
ビルの基礎は強力な材料で作られました。
B2 noun /frɔːd/

Fraud

詐欺
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.
その会社はクレジットカード詐欺とマネーロンダリングで調査されました。
C2 noun /ˈfræŋkɪnsɛns/

frankincense

お香
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.
寺院は燃えるお香の甘い香りで満ちていました。
C2 noun /ˈflɛdʒlɪŋ/

fledgeling

若鳥
Meaning
A young bird that has just developed its feathers and is learning to fly; a beginner.
Example
The fledgeling was trying hard to take its first flight.
若鳥は最初の飛行をしようとしていました。
A2 noun /fraɪd raɪs/

Fried rice

チャーハン
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.
私たちは中国料理店からチキンフライドライスを注文しました。
C1 noun /ˈfæk.ʃən/

Faction

派閥
Meaning
a small organized dissenting group within a larger one
Example
Different factions within the party disagreed about the new policy.
党内の異なる派閥は新しい政策に対して意見が一致しませんでした。
C1 noun /ˈfɔːrˌrʌnər/

forerunner

先駆者
Meaning
A person or thing that comes before another; a predecessor or harbinger.
Example
The Wright brothers were the forerunners of modern aviation.
ライト兄弟は現代の航空の先駆者でした。
B1 noun /ˈfaɪ.tər/

Fighter

戦闘機
Meaning
a military aircraft designed for attacking other aircraft; a person who fights
Example
The fighter jet flew overhead during the military parade.
戦闘機は軍事パレードの間に私たちの頭上を飛びました。
C2 noun /ˈfaɪnəri/

finery

高級または装飾的な服
Meaning
expensive or elaborate clothes, decorations, or accessories
Example
She attended the party in her finest finery.
彼女は最上の衣装でパーティーに出席した。
B2 noun /ˈfeð.ər/

Feather

鳥の羽
Meaning
one of the light structures that cover a bird's body
Example
The peacock has beautiful colorful feathers.
孔雀は美しい色とりどりの羽を持っています。
B2 noun fəˈtiːɡ

fatigue

疲労
Meaning
Physical or mental exhaustion due to prolonged exertion or mental stress
Example
Lack of sleep leads to extreme fatigue.
睡眠不足は極度の疲労を引き起こします。
C1 adjective /ˈfɔːrθˌraɪt/

forthright

率直
Meaning
Direct and honest in speech or behavior; straightforward.
Example
She was forthright in her criticism of the policy.
彼女は政策に対する批判で率直だった。
B2 noun /ˈfæntəsi/

fantasy

ファンタジー
Meaning
a creation of the imagination, especially something improbable or impossible
Example
She has a vivid fantasy about traveling to space.
彼女は宇宙旅行に関する生き生きとしたファンタジーを持っています。
A1 noun /ˈflaʊər/

flower

花
Meaning
the seed-bearing part of a plant, often colorful and fragrant, that blossoms
Example
The garden was full of colorful flowers.
庭はカラフルな花でいっぱいでした。
B2 noun /ˈfriːˌlænsər/

freelancer

フリーランサー
Meaning
A person who works independently without being permanently employed by one organization.
Example
She works as a freelancer designing websites for different clients.
彼女はフリーランサーとして、異なるクライアントのためにウェブサイトをデザインしています。
C2 adjective /ˈfuːlˌhɑːrdi/

foolhardy

無謀な
Meaning
Recklessly bold or rash; taking foolish risks.
Example
It was foolhardy of him to climb the mountain without proper gear.
適切な装備なしで山に登るのは無謀だった。
B2 adjective /flɔːd/

flawed

欠陥のある
Meaning
having a mistake or fault that reduces its value or quality
Example
The flawed design of the car led to a recall.
車の欠陥のあるデザインがリコールを引き起こした。
C1 noun /ˈfɛləni/

felony

重罪
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.
彼は重罪で有罪判決を受け、10年間の懲役刑を言い渡されました。
B2 noun /ˈfɛə(r)nɪs/

fairness

公平
Meaning
the quality of being free from bias, favoritism, or injustice
Example
She always strives for fairness in her decisions.
彼女は常に自分の決定に公平さを求めています。
C1 verb /ˈfɛdərət/

federate

連邦する
Meaning
to unite in a league or federation; to form an alliance
Example
Several states federated to create a stronger union.
いくつかの州が強い連邦を作るために団結しました。
B2 verb fəˈsɪl.ɪ.teɪt

facilitate

容易にする
Meaning
Make an action or process easier or more achievable; to help bring about.
Example
Good infrastructure facilitates economic growth.
良いインフラは経済成長を容易にする。
C2 noun /ˈfɔːθ.raɪt.nəs/

forthrightness

坦率さ
Meaning
The quality of being honest and straightforward; directness.
Example
Her forthrightness made her a respected journalist.
Her forthrightness made her a respected journalist.
B1 noun /ˈfaɪər.mən/

Fireman

消防士
Meaning
a person whose job is to extinguish fires and rescue people
Example
The brave fireman rescued the family from the burning building.
勇敢な消防士は燃えている建物から家族を救いました。
C1 adjective ˈfɔːr.mɪ.də.bəl

formidable

手ごわい
Meaning
Inspiring fear or respect through being impressively large, powerful, intense, or capable.
Example
The boxer was a formidable opponent in the ring.
そのボクサーはリングで手ごわい相手だった。
C1 noun /frɪˈvɒləti/

frivolity

軽薄さ
Meaning
Lack of seriousness; silly or trivial behavior.
Example
The teacher discouraged frivolity during the exam.
先生は試験中の軽薄な行動を戒めました。
B2 noun /ˈfɜːrneɪs/

furnace

炉
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.
工場の炉は金属を迅速に溶かしました。
C2 adjective /ˈfɛtɪd/

fetid

悪臭のある、臭い
Meaning
having a strong, unpleasant smell
Example
The fetid smell from the garbage was unbearable.
ゴミからの臭いは耐えられなかった。
A1 number /ˈfɔːrti/

forty

幸せ
Meaning
the number 40; ten times four
Example
She celebrated her forty years of life with a big party.
彼女は賞を受け取ったとき、幸せを隠せなかった。
C2 adjective /ˈfiːbraɪl/

febrile

発熱の、興奮した
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.
患者は高い温度の熱の状態にありました。
C1 noun /flæt fɪʃ/

Flat fish

カレイ
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.
カレイやヒラメのようなフラットフィッシュはグリルに最適です。
C2 adjective /ˈfɪnɪki/

finicky

気難しい; 詳細に非常にこだわる
Meaning
difficult to please; very particular about details
Example
He is so finicky about his food that he only eats organic vegetables.
彼は自分の食べ物に対してとても細かいので、有機野菜だけを食べます。
C2 noun /fiːˈkʌndɪti/

fecundity

肥沃, 繁殖力
Meaning
the ability to produce an abundance of offspring or new growth; fertility
Example
The fecundity of the river delta supports diverse wildlife.
川の三角州の肥沃は多様な野生動物を支えています。
C1 noun /frɪndʒ/

fringe

装飾的縁 / 端
Meaning
A decorative border of threads; the outer edge or margin of something.
Example
The festival had a fringe of small independent performances.
フェスティバルには小さな独立したパフォーマンスの端がありました。
A2 verb /fraɪ/

fry

揚げる
Meaning
to cook food in hot oil or fat
Example
She fries eggs for breakfast every morning.
彼女は毎朝朝食に卵を揚げます。
B2 adjective /ˌfjuːtʃəˈrɪstɪk/

futuristic

未来的な
Meaning
Having or involving very modern technology or design that is advanced beyond what is currently available
Example
Futuristic technologies are transforming industries worldwide.
未来的な技術は、世界中の産業を変革しています。
B2 verb /fʊlˈfɪl/

fulfill

実現する
Meaning
to complete or accomplish something, especially a task or promise
Example
He worked hard to fulfill his dreams.
彼は夢を実現するために一生懸命働きました。
B2 adjective /fəˈbɪd.ən/

Forbidden

禁止された; 違法な
Meaning
not allowed; prohibited; banned
Example
Smoking is strictly forbidden in this building.
この建物では喫煙が厳しく禁止されています。
B2 verb /ˈfæsən/

fasten

締める
Meaning
To attach or secure something firmly in place
Example
Please fasten your seatbelt before the plane takes off.
飛行機が離陸する前にシートベルトを締めてください。
C1 noun /ˈfiːtəs/

fetus

胎児
Meaning
an unborn or unhatched offspring in the womb or egg
Example
The doctor explained the development of the fetus during pregnancy.
医師は妊娠中の胎児の発達について説明しました。
C1 noun /ˈfɔːr.teɪ/ or /fɔːrt/

forte

得意
Meaning
a strong ability or talent; something one does particularly well
Example
Cooking is definitely her forte.
料理は間違いなく彼女の得意分野です。
B2 noun /ˈfræɡ.mənt/

Fragment

断片; 部分;
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.
考古学者たちは土の中で古代の陶器の断片を発見しました。
B2 verb /flɪk/

flick

素早く叩く
Meaning
to move or cause to move with a sudden quick motion
Example
He flicked the switch to turn on the light.
彼はライトをつけるためにスイッチをフリックしました。
C1 noun /ˈfaɪər.wɔːl/

firewall

ファイアウォール
Meaning
A network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
Example
A firewall protects networks from cyber-attacks.
ファイアウォールはネットワークをサイバー攻撃から守ります。
A2 adjective /fɔːls/

False

偽; 不正確; 欺瞞; 人工
Meaning
not true; incorrect; deceptive; artificial
Example
The witness gave false testimony in court.
証人は法廷で偽証をした。
C1 noun /ˈfjuː.dʒə.tɪv/

Fugitive

逃亡者
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.
警察は刑務所から逃げた逃亡者を捕まえるために捜索を開始しました。
A2 noun /flaɪt/

flight

フライト / フライト
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.
ロンドン行きのフライトは悪天候のため遅れました。
A2 verb /fɪl/

fill

満たす
Meaning
to make or become full; to put something into a container until it is full
Example
Please fill the glass with water.
グラスに水を注いでください。
C1 noun /fɪˈdɛl.ɪ.ti/

fidelity

忠誠心
Meaning
Faithfulness to a person, cause, or belief, demonstrated by continuing loyalty and support.
Example
A dog's fidelity to its owner is unmatched.
犬の忠誠心はその飼い主に対して比類のないものです。
B2 noun /ˈfreɪ.ɡrəns/

Fragrance

香り; 香水
Meaning
a pleasant, sweet smell; a perfume or cologne
Example
The fragrance of jasmine flowers filled the entire garden in the evening.
ジャスミンの花の香りが夕方、庭全体に広がった。
A2 noun /ˈfer.i.teɪl/

Fairy-tale

おとぎ話
Meaning
a children's story about magical and imaginary beings and lands
Example
Children love listening to fairy-tales before bedtime.
子供たちは寝る前におとぎ話を聞くのが大好きです。
B2 noun /ˈfaɪbər/

fiber

繊維
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.
果物と野菜は繊維が豊富です。
C2 adjective /ˈfer.əs/

ferrous

鉄を含む
Meaning
containing or consisting of iron
Example
Ferrous metals are commonly used in construction.
鉄を含む金属は建設でよく使用されます。
B2 noun /fraɪt/

Fright

恐怖; 驚き; 驚愕
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.
大きな雷の音で、彼女は恐怖を感じてコーヒーカップを落としました。
C1 noun ˈflɔː.rə ænd ˈfɔː.nə

flora and fauna

フローラとファウナ
Meaning
The plants and animals of a particular region, habitat, or geological period.
Example
The Galápagos Islands have unique flora and fauna.
ガラパゴス諸島には独特のフローラとファウナがあります。
C1 noun /fruˈɪʃən/

fruition

実現
Meaning
The realization or fulfillment of a plan, project, or desire.
Example
Her dream of becoming a doctor finally came to fruition.
医者になるという彼女の夢はついに実現した。
B1 verb /fəʊld/

fold

Meaning
to bend something, especially paper or cloth, so that one part covers another
Example
She folded the letter neatly before placing it in the envelope.
B2 adjective /ˈfɜːr.taɪl/

Fertile

肥沃な
Meaning
capable of producing abundant vegetation or crops; able to conceive children
Example
The fertile soil in this region makes it perfect for growing vegetables.
この地域の肥沃な土壌は、野菜を育てるのに最適です。
C1 noun /ˌfɪɡjʊˈriːn/

figurine

小さな装飾用の像
Meaning
a small ornamental statue or model of a human or animal
Example
She bought a porcelain figurine of a dancing ballerina.
彼女はダンスをするバレリーナの陶器のフィギュリンを買いました。
C2 noun /ˌfɔːrɔːrdɪˈneɪʃən/

foreordination

予定
Meaning
the act of determining something in advance; predestination
Example
The doctrine of foreordination suggests that events are fixed by divine will.
予定説の教義は、出来事は神の意志によって定められていると示唆しています。
B1 noun, verb /flæɡ/

flag

Meaning
a piece of fabric with a symbol or colors; or to mark or signal attention
Example
They raised the national flag during the ceremony.
B2 noun /ˈfriː.kwən.si/

Frequency

頻度
Meaning
the rate at which something occurs or is repeated over a particular period of time
Example
The frequency of earthquakes in this region has increased dramatically over the past decade.
この地域の地震の頻度は過去10年間で劇的に増加しました。
A2 noun/adjective /ˈfiːmeɪl/

female

雌
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.
メスライオンは自分の子供たちを必死に守ります。
C2 verb /fleɪl/

flail

何かを激しく振る; 必死に動く
Meaning
to wave or swing something about wildly; to thrash about
Example
He flailed his arms to keep afloat in the water.
彼は水に浮かぶために腕を振った。
A2 adjective /ˈfɔːrməl/

formal

正式
Meaning
done in accordance with rules of convention or etiquette; official or serious in nature
Example
He wore a formal suit to the wedding.
彼は結婚式でフォーマルなスーツを着ていました。
C2 noun, verb /ˈfɪlɪˌbʌstər/

filibuster

議会での活動を長時間の演説で遅らせる戦術; この戦術を使用する
Meaning
a tactic of delaying legislative action by prolonged speech; to use such a tactic
Example
The senator filibustered for hours to prevent the bill from passing.
上院議員は法案を通すのを防ぐために何時間もフィリバスターを行った。
B2 verb /fjuːz/

fuse

融合する
Meaning
To join or blend two or more things together into one.
Example
The two metals fused under high heat.
二つの金属は高温で融合した。
A1 adjective /ˈfeɪ.məs/

famous

有名
Meaning
Known about by many people; renowned.
Example
This area is famous for its unique heritage.
この地域はそのユニークな遺産で有名です。
C2 noun /ˈfɔːrˌseɪl/

foresail

フォアセイル
Meaning
The principal sail set on the foremast of a sailing vessel.
Example
The crew adjusted the foresail to catch the wind.
乗組員は風を捉えるためにフォアセイルを調整しました。
B2 noun /ˈfeɪ.lɪŋ/

Failing

失敗; 欠点; 弱点
Meaning
a weakness, especially in a person's character; a fault
Example
His only failing is that he talks too much during meetings.
彼の唯一の失敗は、会議中に話しすぎることです。
B2 noun /ˈfriːdəm ˌfaɪtər/

freedom fighter

自由の戦士
Meaning
a person who takes part in an armed or political struggle to achieve freedom or independence for their people or country
Example
The freedom fighter dedicated his life to the liberation of his homeland.
その自由の戦士は祖国の解放のために人生を捧げた。
C1 adjective /ˌfɑːrˈfɛtʃt/

far-fetched

信じがたい
Meaning
unlikely to happen or be true; improbable
Example
His explanation for being late was a bit far-fetched.
彼の遅刻の理由は少し信じがたいものでした。
C2 noun /fækˈsɪmɪli/

facsimile

コピー
Meaning
an exact copy or reproduction of a document
Example
He sent a facsimile of the contract to the client.
彼は契約書のコピーをクライアントに送った。
C2 noun /ˈfʌstɪən/

fustian

浮かれたスピーチ
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.
政治家のスピーチは浮かれた言葉と空っぽの約束でいっぱいだった。
B2 adjective /fræŋk/

Frank

正直な; 開かれた; 率直な; 誠実な
Meaning
honest; open; straightforward; candid
Example
She gave me a frank opinion about my presentation.
彼女は私のプレゼンテーションについて率直な意見をくれました。
C2 verb /flɪt/

flit

ひらひら舞う
Meaning
to move quickly and lightly from one place to another
Example
Butterflies flitted from flower to flower.
蝶が花から花へひらひらと舞った。
C1 adjective ˈfæʃ.ɪst

fascist

ファシスト
Meaning
Relating to or characteristic of fascism; extremely authoritarian.
Example
Fascist governance undermines freedom.
ファシスト政権は自由を脅かす。
C1 adjective /ˈflaʊəri/

flowery

花のような / 飾られた
Meaning
Full of flowers or overly elaborate in style or language.
Example
She wrote a flowery letter filled with poetic phrases.
彼女は詩的なフレーズで満たされた花のような手紙を書いた。
C1 adjective /freɪl/

frail

脆弱
Meaning
Physically weak and delicate.
Example
The old man was too frail to walk without help.
その高齢者は助けなしでは歩けないほど脆弱だった。
A2 noun /frɪdʒ/

fridge

冷蔵庫
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.
朝食の後で牛乳を冷蔵庫に入れました。
C2 noun /flɛk/

fleck

小さなシミ
Meaning
a small spot or mark, often of a different color
Example
There was a fleck of paint on the floor.
床にペンキの小さなシミがありました。
C1 noun /ˈfæm.ɪn/

Famine

飢饉
Meaning
extreme scarcity of food; a period when food is extremely scarce
Example
The severe drought led to widespread famine in the region.
厳しい干ばつが地域で広範な飢饉を引き起こしました。
B2 verb /ˈflætər/

flatter

過度または不誠実にお世辞を言って、恩恵を得る
Meaning
to praise excessively or insincerely to gain favor
Example
He tried to flatter his boss to get a promotion.
彼は昇進を得るために上司をお世辞で持ち上げようとした。
C1 adjective fæsˈtɪd.i.əs

fastidious

几帳面な
Meaning
Very attentive to and concerned about accuracy and detail.
Example
She is fastidious about maintaining cleanliness.
彼女は清潔を保つことにとても几帳面だ。
C2 adjective /ˈfʌŋɡəs/

fungous

きのこに似た
Meaning
relating to or resembling a fungus
Example
The damp basement had a fungous smell.
湿った地下室はきのこに似た匂いがした。