A2 adjective, noun /ˈfeɪvərɪt/

favorite

お気に入り

Meaning

Preferred over all others; something or someone especially liked.

Example

Chocolate is my favorite ice cream flavor.

チョコレートは私のお気に入りのアイスクリームのフレーバーです。

C2 adjective /fækˈtɪʃəs/

factitious

人工的な、真実ではない

Meaning

artificial or fabricated; not natural or genuine

Example

The excitement in his story seemed factitious and forced.

彼の話の興奮は人工的で強制的に見えました。

B2 noun /ˈfɪlmˌmeɪkər/

filmmaker

映画製作者

Meaning

a person who makes films, typically as a profession

Example

He is a well-known filmmaker in the industry.

彼は業界で有名なフィルムメーカーです。

C1 adverb /ˈfeɪ.təl.i/

Fatally

致命的に

Meaning

in a way that causes death; with deadly consequences; critically

Example

The accident fatally injured two passengers.

事故は二人の乗客を致命的に負傷させた。

C1 verb /flɪntʃ/

flinch

ひるむ

Meaning

to suddenly move back or away due to fear or pain

Example

He didn’t flinch when the doctor gave him the injection.

彼は医者が注射をする時、ひるむことはなかった。

B2 adjective /ˈfraɪtfəl/

frightful

恐ろしい

Meaning

causing fear or horror; very unpleasant

Example

The hikers faced frightful weather conditions on the mountain.

登山者たちは山で恐ろしい天候条件に直面しました。

C1 noun /faɪˈnælɪti/

finality

決定的な性質

Meaning

the quality of being final or irreversible; a sense of conclusiveness

Example

The judge's decision gave the case a sense of finality.

裁判官の決定はその事件に決定的な感覚を与えた。

A2 noun /ˈfoʊldər/

folder

フォルダー

Meaning

a container or directory used to store and organize papers or digital files

Example

I saved all the photos in a separate folder.

すべての写真を別のフォルダーに保存しました。

C1 adjective /fəˈnætɪk/

Fanatic

熱狂的な

Meaning

extremely passionate about something; showing excessive enthusiasm or devotion

Example

He is a fanatic supporter of his football team.

彼はサッカーチームの熱狂的なサポーターです。

C1 noun /ˈfjʊərɔːr/

furor

騒動

Meaning

An outbreak of public anger or excitement.

Example

The politician's remarks created a furor in the media.

政治家の発言がメディアで大騒ぎを引き起こしました。

C1 adjective /ˈflæɡɪŋ/

flagging

疲れる、弱くなる、または熱意を失う

Meaning

becoming tired, weaker, or less enthusiastic

Example

After hours of work, his energy was flagging.

長時間働いた後、彼のエネルギーは衰えていた。

C1 noun /fæd/

fad

一時的な流行、トレンド

Meaning

a temporary fashion or trend; a short-lived craze

Example

The new diet became a popular fad among teenagers.

新しいダイエットはティーンエイジャーの間で人気の一時的なトレンドとなった。

C2 adjective /fjuːˈnɪəriəl/

funereal

葬儀的

Meaning

having the mournful, somber character of a funeral

Example

The room was filled with a funereal silence after the announcement.

発表後、部屋は葬儀的な静けさで満たされた。

A2 verb /faʊnd/

found

設立する

Meaning

to establish or create something; to discover

Example

They founded the company in 1995.

彼らは1995年に会社を設立しました。

C1 adjective /ˈfɪk.əl/

Fickle

気まぐれな; 不安定な; 変わりやすい;

Meaning

changeable; inconstant; liable to sudden unpredictable change

Example

His fickle nature made it hard to trust his promises.

彼の気まぐれな性格は、彼の約束を信じることを難しくした。

C2 noun /ˈfrækɑː/

fracas

騒動

Meaning

A noisy disturbance or quarrel.

Example

The fracas outside the bar drew the attention of the police.

バーの外での騒動が警察の注意を引きました。

A2 noun /fæn/

Fan

ファン; 愛好者; 扇風機

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.

彼女はクラシック音楽の大ファンで、市内のすべてのコンサートに参加しています。

A2 noun /ˈfɔːrənər/ or /ˈfɑːrənər/

foreigner

外国人

Meaning

A person from another country.

Example

The city welcomes every foreigner with kindness.

その都市はすべての外国人を親切に迎えます。

A2 determiner/adjective /ˈfjuːər/

fewer

より少ない

Meaning

a smaller number of; not as many

Example

Fewer people attended the meeting than expected.

予想より少ない人々が会議に出席した。

B2 adjective /ˌfɔːrθˈkʌmɪŋ/

forthcoming

近づいている

Meaning

about to happen soon; willing to share information

Example

The company announced its forthcoming product launch.

会社は近づいている製品の発売を発表しました。

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。

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。

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。

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。

C1 noun /ˈfɔːreɪ/

foray

突撃 / 初めての試み

Meaning

A sudden short attack or attempt, especially into new activity or territory.

Example

The company made its first foray into the international market.

その会社は国際市場への初めての進出を果たした。

C1 adjective /flæmˈbɔɪənt/

flamboyant

派手で色鮮やかな、または自信に満ちた

Meaning

showy, strikingly bold or colorful; confident and lively

Example

His flamboyant style drew everyone's attention at the party.

彼の派手なスタイルはパーティーで皆の注目を集めました。

B1 verb /ˈfɛri/

ferry

フェリーで運ぶ

Meaning

to transport by boat; to carry back and forth

Example

The boat ferried passengers across the river.

船は乗客を川の向こうに運びました。

B1 noun /fiː/

fee

料金

Meaning

A payment made for a service or privilege.

Example

The lawyer charged a high fee for his services.

弁護士は彼のサービスに高い料金を請求した。

A2 noun/verb /ˈfɪʃɪŋ/

fishing

釣り

Meaning

the activity of catching fish

Example

Fishing is a popular activity in coastal villages.

フィッシングは沿岸の村で人気のある活動です。

B2 adjective /ˈfɔːrtʃənət/

fortunate

幸運な

Meaning

Having good luck or receiving something desirable by chance.

Example

She was fortunate to escape the accident without injuries.

彼女は事故で怪我をすることなく逃げることができて幸運だった。

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。

C2 adjective/adverb /feɪn/

fain

喜んで、喜んで

Meaning

gladly, willingly, or with pleasure

Example

I would fain help you if I had the time.

もし時間があれば、喜んであなたを助けます。

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.

C2 noun ˌfjuːmɪˈɡeɪʃən

fumigation

燻蒸

Meaning

The practice of disinfecting or purifying an area using gas or smoke.

Example

Fumigation is an effective method to control pest infestations.

消毒は害虫の侵入を制御するための効果的な方法です。

A2 noun /ˈfɪŋ.ɡər/

Finger

指

Meaning

any of the four long thin parts of the hand (or five, if the thumb is included)

Example

She pointed with her finger to show the direction to the museum.

彼女は指を使って博物館の方向を指し示しました。

B2 verb, noun, adjective /flʌʃ/

flush

顔を赤くする / 水で洗浄する

Meaning

to become red in the face, usually from embarrassment, heat, or excitement; to clean something with a flow of water

Example

She flushed with embarrassment when she realized her mistake.

彼女は自分のミスに気づいたとき、恥ずかしさで顔が赤くなった。

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。

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 adjective /ˈfɒksi/

foxy

ずるい

Meaning

Clever, cunning, or attractive.

Example

He came up with a foxy plan to win the game.

彼はゲームに勝つためにずるい計画を思いついた。

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 noun /flɔː/

flaw

欠陥

Meaning

a defect or imperfection in something

Example

The diamond had a small flaw that was barely visible.

ダイヤモンドにはほとんど見えない小さな欠陥がありました。

C1 adjective /ˈfɛrəl/

feral

野生の

Meaning

existing in a wild or untamed state; not domesticated

Example

The feral cat roamed the streets at night.

その野良猫は夜に街を歩き回っていた。

C1 noun /ˈfɔːr.tɪ.tjuːd/

fortitude

不屈

Meaning

Courage in pain or adversity; mental and emotional strength in facing difficulty.

Example

She faced adversity with great fortitude.

彼女は困難に立ち向かう強い意志を持っていました。

C2 noun /ˈfɒpəri/

foppery

虚飾

Meaning

Foolish or excessive concern with one's appearance or manners; pretentious behavior.

Example

His obsession with fashion was dismissed as mere foppery.

彼のファッションへの執着は単なる虚飾と見なされた。

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。

C1 noun /fəˌsɪlɪˈteɪʃən/

facilitation

容易化

Meaning

The action of facilitating or making an action or process easier or helping bring about an outcome.

Example

Her facilitation made the meeting run smoothly.

彼女のファシリテーションにより、会議はスムーズに進行しました。

B2 verb /ˈfɜːrnɪʃ/

furnish

家具を設置する、提供する

Meaning

to provide or supply with furniture or equipment

Example

They furnished the new house with modern furniture.

彼らは新しい家に現代的な家具を備えました。

A1 noun /fʌn/

fun

楽しみ

Meaning

enjoyment, amusement, or light-hearted pleasure

Example

We had a lot of fun at the party.

パーティーでとても楽しみました。

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。

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 noun /fɔːn/

Fawn

子鹿

Meaning

a young deer; a light yellowish-brown color

Example

The mother deer protects her fawn from predators.

母鹿は捕食者から子鹿を守ります。

A2 noun /ˈfæʃ.ən/

fashion

ファッション

Meaning

a popular or accepted style of clothing, behavior, or way of doing something

Example

She always keeps up with the latest fashion.

彼女はいつも最新のファッションを追いかけています。

C1 adjective /ˈfliː.tɪŋ/

fleeting

儚い

Meaning

Lasting for a very short time; passing quickly.

Example

Happiness can be fleeting, so cherish every moment.

幸せは儚いものである可能性があるので、すべての瞬間を大切にしてください。

C1 adjective /fərˈlɔːrn/

forlorn

孤独な, 絶望的な

Meaning

extremely sad, lonely, or abandoned

Example

The abandoned puppy looked so forlorn in the rain.

放置された子犬は雨の中でとても悲しそうに見えました。

C2 adjective /ˈfɛkləs/

feckless

無能な, 責任感のない

Meaning

lacking initiative or strength of character; irresponsible

Example

His feckless attitude at work caused several missed deadlines.

彼の無能な態度が仕事でいくつかの期限を逃す原因となった。

C1 adjective ˈfjuː.taɪl

futile

無駄な

Meaning

Incapable of producing any useful result; pointless.

Example

His attempts to change the situation were futile.

状況を変えるための彼の試みは無駄だった。

C2 adjective /ˈfæð.əm.ləs/

fathomless

理解不可能な、または測定不可能な; 非常に深い

Meaning

impossible to understand or measure; very deep

Example

The ocean seemed fathomless as it stretched to the horizon.

海は地平線まで広がると、測り知れないように見えました。

B1 verb /fərˈbɪd/

forbid

禁じる

Meaning

to order someone not to do something

Example

The school forbids smoking on campus.

学校はキャンパス内での喫煙を禁じています。

C2 adjective /fəˈloʊniəs/

felonious

重大な犯罪に関連する

Meaning

relating to or involved in serious criminal activity

Example

He was charged with felonious assault after the incident.

事件の後、彼は重罪暴行で起訴されました。

C2 noun /fɪntʃ/

finch

フィンチ（小さな歌う鳥）

Meaning

a small songbird with a short, stout bill

Example

A colorful finch perched on the branch singing sweetly.

カラフルなフィンチが枝に止まり、甘い歌を歌っていました。

A1 adjective /ˈfrɛndli/

friendly

幸福

Meaning

Kind and pleasant; showing goodwill and affection.

Example

The shop owner is very friendly to new customers.

彼女は賞を受け取ったとき、幸せを隠すことができませんでした。

C1 noun /fɪˈnɛs/

finesse

巧妙さ, 技量, 洗練

Meaning

Subtlety and skill; refinement and delicacy in performance or artistry.

Example

The artist painted with great finesse.

そのアーティストは大きな巧妙さで絵を描いた。

A2 noun /fluː/

flu

インフルエンザ

Meaning

a contagious viral illness causing fever, aches, and respiratory symptoms; influenza

Example

She stayed home because she had the flu.

彼女はインフルエンザなので家にいました。

C2 adjective /ˈflɒrɪd/

florid

過度に装飾された / 赤みがかった

Meaning

Having a red or flushed complexion; or excessively ornate and intricate.

Example

The speaker’s florid style made the lecture hard to follow.

講演者の過度に装飾されたスタイルは、講義を理解するのを難しくした。

C2 verb /ˈfɛtər/

fetter

束縛する、制限する

Meaning

to restrain or restrict someone’s freedom

Example

The strict rules fettered the creativity of the students.

厳しいルールは学生の創造性を制限した。

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.

C1 adjective /ˈfruːt.ləs/

Fruitless

無駄な; 実を結ばない; 無益な;

Meaning

unsuccessful; futile; pointless;

Example

After hours of searching, their efforts proved fruitless.

数時間の探索の後、彼らの努力は無駄であることが証明されました。

C1 adjective /ˈfjuː.dəl/

feudal

封建的

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.

城は封建時代の遺物です。

A2 adjective /fænˈtæstɪk/

Fantastic

素晴らしい; 驚くべき; 優れた

Meaning

extremely good; wonderful; excellent

Example

The movie was absolutely fantastic!

映画は本当に素晴らしかった！

C1 noun /ˈfɒdər/

fodder

飼料

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.

農家は家畜が冬を越せるように十分な飼料を貯めておいた。

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 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.

B2 noun /ˈfʊtɪdʒ/

footage

ビデオ録画

Meaning

a recorded film or video, especially one that is used for news or documentaries

Example

The footage of the protest was shown on television all day.

抗議の映像は一日中テレビで放送されました。

C1 noun fluˈɪd.ɪ.ti

fluidity

流動性

Meaning

The ability of a substance to flow easily; smooth and graceful movement or style.

Example

The fluidity of the dancer's movements was mesmerizing.

ダンサーの動きの流動性は魅惑的でした。

C1 adjective /ˌfɑːrˈfetʃt/

farfetched

ありそうもない、またはあり得ない

Meaning

unlikely to happen or be true; improbable

Example

His explanation for being late sounded farfetched.

彼の遅刻の説明は信じがたいものだった。

C2 adjective /ˈfiːkənd/

fecund

肥沃な, 生産的な

Meaning

producing or capable of producing an abundance of offspring or new growth; fertile

Example

The fecund soil produced a bountiful harvest this year.

肥沃な土壌は今年豊かな収穫をもたらしました。

B2 adjective /ˈfɛdərəl/

federal

フェデラル

Meaning

Relating to the central government of a federation.

Example

The federal government passed a new law on healthcare.

連邦政府は医療制度に関する新しい法律を通過させました。

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。

B2 adjective /ˈfes.tɪv/

Festive

お祭りのような; 楽しい; セレブレーション

Meaning

joyful; celebratory; having the characteristics of a festival

Example

The house looked festive with colorful decorations.

家はカラフルな飾り付けでお祭り気分だった。

B1 noun /ˈfes.tə.vəl/

Festival

フェスティバル; 祭り;

Meaning

a day or period of celebration, typically for religious reasons; an organized series of concerts, films, etc.

Example

The music festival attracted thousands of visitors from around the world.

音楽フェスティバルは世界中から何千人もの観客を魅了しました。

C1 verb /ˈflʌtər/

flutter

羽ばたく / 震える

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.

蝶が日光の中で羽ばたき始めた。

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。

B1 noun /ˈfiːdbæk/

feedback

フィードバック

Meaning

information or opinions about how well someone is doing something

Example

She asked her teacher for feedback on her essay.

彼女はエッセイについて先生にフィードバックを求めました。

C2 adjective /ˈfɜːr.vɪd/

Fervid

情熱的な; 非常に熱心な; 感情で燃えている

Meaning

passionate; intensely enthusiastic; burning with emotion

Example

She gave a fervid speech about environmental protection.

彼女は環境保護についての熱烈なスピーチをしました。

A1 noun ˈfjuː.tʃər

future

未来

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.

未来のプロジェクトは戦略的な計画に依存しています。

B1 noun /ˈfaɪəˌfaɪtə/

firefighter

消防士

Meaning

a person whose job is to put out fires

Example

The firefighter saved the family from the burning building.

消防士は燃える建物から家族を救いました。

C2 noun /fluː/

flue

煙道

Meaning

A pipe or channel for smoke and waste gases produced by a fire, gas heater, or power station.

Example

The chimney flue needs to be cleaned regularly.

煙突の煙道は定期的に掃除する必要があります。

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 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。

C2 verb /flɛdʒ/

fledge

飛べるようになる

Meaning

To develop wing feathers large enough for flight; to bring up until able to fly.

Example

The young birds will fledge in a few weeks.

若い鳥たちは数週間以内に飛べるようになる。

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 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。

B1 adjective /ˈflek.sə.bəl/

Flexible

柔軟な; 変更に適応可能

Meaning

able to bend easily; adaptable to change; not rigid

Example

She has a flexible work schedule that allows her to work from home.

彼女は自宅で働ける柔軟な仕事のスケジュールを持っています。

B2 noun/adjective /ˈfluːɪd/

fluid

流体

Meaning

a substance that can flow easily, such as liquid or gas; smooth and adaptable

Example

The artist's fluid movements impressed the audience.

アーティストの流れるような動きは観客を感動させました。

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。

A2 adverb, adjective, verb, noun /ˈfɔːrwərd/

forward

前進

Meaning

toward the front; to advance or send ahead; an onward position or direction

Example

The troops moved forward to secure the bridge.

部隊は橋を確保するために前進しました。

C1 noun /fiˈæs.koʊ/

fiasco

完全な失敗

Meaning

a complete failure, especially a ludicrous or humiliating one

Example

The event turned into a complete fiasco due to poor planning.

計画の悪さからそのイベントは完全な失敗に終わった。

A2 adjective /ˈfɪnɪʃt/

finished

終了, 完了

Meaning

completed or brought to an end

Example

The painting is finished and ready to display.

その絵画は完了し、展示の準備ができています。

A2 adjective /fer/

Fair

公正な; 妥当な; 魅力的な

Meaning

just and reasonable; treating people equally; light in color; attractive

Example

The judge made a fair decision in the case.

裁判官はその事件で公正な判断を下しました。

A1 verb /ˈfɒloʊ/

follow

従う

Meaning

to move behind someone or something; to go after or come after

Example

The children followed their teacher into the classroom.

子供たちは先生について教室に入りました。

B1 adverb /ˈfʊli/

fully

完全に

Meaning

completely or entirely; to the fullest extent

Example

She is fully aware of the risks.

彼女はリスクについて完全に認識しています。

A2 noun /fɪlm ˈæktər/

film actor

映画俳優

Meaning

A person who performs roles in movies or films.

Example

The film actor received widespread acclaim for his performance.

その映画俳優は演技で広く称賛されました。

C2 noun /fluːk/

fluke

偶然の幸運

Meaning

A stroke of luck; an unexpected piece of good fortune.

Example

Winning the lottery was a complete fluke.

宝くじに当たるのは完全に偶然の幸運だ。

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。

A2 adjective /frɛʃ/

fresh

新鮮

Meaning

new, recently made, or clean and pure

Example

The bread is still fresh from the oven.

パンはオーブンから出たばかりです。

C2 verb /ˈfɛstər/

fester

悪化する、激化する

Meaning

to become worse or more intense, often through neglect or infection

Example

If grievances are ignored, they may fester into resentment.

不満を無視すると、それは恨みに変わることがあります。

C1 noun /ˈfɔːrɡraʊnd/

foreground

前景

Meaning

the part of a scene that is nearest to and in front of the viewer

Example

The flowers in the foreground brightened the picture.

前景にある花が絵を明るくしました。

C1 noun ˈfɔː.saɪt

foresight

先見の明

Meaning

The ability to predict or the action of predicting what will happen or be needed in the future.

Example

His foresight helped the company avoid financial losses.

彼の先見の明は会社が財政的損失を避けるのに役立った。

C2 noun /ˈfɔːrˌpiːk/

forepeak

船首の部屋

Meaning

The compartment in the forward part of a ship, often used for storage.

Example

The sailors stored extra ropes in the forepeak.

船員たちは余分なロープを船首の部屋に収納しました。

C1 noun /ˈfɔːrwɜːrd/

foreword

序文

Meaning

a short introduction at the beginning of a book, typically written by someone other than the author

Example

The foreword of the book was written by a famous historian.

その本の序文は、有名な歴史家によって書かれました。

C2 adjective /ˈfɔːnɪŋ/

fawning

過度のほめ言葉

Meaning

displaying exaggerated flattery or affection

Example

Her fawning compliments made everyone uncomfortable.

彼女の過度のほめ言葉は、皆を不快にさせました。

C1 verb /ˈfɔːrfɪt/

forfeit

Meaning

to lose or give up something, usually as a penalty for wrongdoing

Example

He had to forfeit the match after breaking the rules.

A2 adjective /ˈflaɪɪŋ/

flying

飛んでいる

Meaning

able to move through the air; related to flight or aircraft

Example

The flying bird disappeared into the clouds.

飛んでいる鳥は雲の中に消えました。

C1 verb/noun ˈfæð.əm

fathom

理解する

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.

海の深さを理解するのは難しい。

C1 adjective /fəˈroʊ.ʃəs/

Ferocious

凶暴な, 激しい, 残忍な

Meaning

savagely fierce, cruel, or violent; extremely aggressive

Example

The ferocious storm destroyed many houses in the coastal area.

激しい嵐は沿岸地域の多くの家を破壊しました。

A1 verb /ˈfɪnɪʃ/

finish

終わらせる

Meaning

to complete or bring to an end; to reach the final point

Example

She finished her homework before dinner.

彼女は夕食前に宿題を終わらせた。

B2 adjective /ˈfeɪθ.fəl/

Faithful

忠実な; 誠実な; 信念に忠実

Meaning

loyal and committed; reliable; true to one's beliefs

Example

She remained faithful to her principles throughout her career.

彼女はキャリアを通じて自分の信念に忠実でした。

C2 verb /ˌfɔːrˈrʌn/

forerun

先駆ける

Meaning

To go before; to precede in time, place, or action.

Example

Dark clouds often forerun a storm.

暗い雲はしばしば嵐の前触れとなる。

B1 adverb /ˈfɜːrstli/

firstly

まず

Meaning

used to introduce the first point or reason in a discussion or argument

Example

Firstly, we need to address the budget issue before proceeding.

まず、予算の問題に対処する必要があります。

C1 noun /ˈflɔː.rə/

flora

特定の地域や生息地に見られる植物生命

Meaning

The plant life found in a particular region or habitat.

Example

The Amazon rainforest is home to a vast flora diversity.

アマゾンの熱帯雨林は豊かなフローラの多様性の家です。

C1 noun ˈfɜːr.vɚ

fervor

情熱または熱意

Meaning

Strong passion or enthusiasm for something.

Example

He spoke with great fervor about his vision for the company.

彼は会社のビジョンについて熱心に話しました。