febrile
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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。
C2 noun /ˈflɒtsəm/

flotsam

漂流物
Meaning
Floating debris from a shipwreck or things discarded and left floating.
Example
The beach was littered with flotsam after the storm.
嵐の後、ビーチは漂流物で埋め尽くされていた。
A2 noun /ˈfɔːrɪst/

Forest

森
Meaning
a large area covered chiefly with trees and undergrowth
Example
We went hiking in the dense forest yesterday.
昨日、私たちは密林をハイキングしました。
C2 verb /fɔɪst/

foist

押し付ける
Meaning
To impose something unwelcome or unnecessary on someone.
Example
He tried to foist his old books onto his friends.
彼は友達に自分の古い本を押し付けようとしました。
B2 adverb /ˈfɔːrmərli/

Formerly

以前は; 以前
Meaning
in the past; previously; at an earlier time
Example
The building was formerly a school but is now a community center.
その建物は以前は学校でしたが、今はコミュニティセンターです。
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。
C2 verb /ˈfrʌktɪˌfaɪ/

fructify

実らせる
Meaning
To make fruitful or productive; to bear fruit.
Example
The new policies will help fructify the economic potential of the region.
新しい政策は地域の経済的な潜在能力を実らせるのに役立ちます。
B2 adjective /ˈfeɪvərəbl/

favourable

好都合な
Meaning
Expressing approval, support, or positivity; advantageous or beneficial
Example
The weather conditions were favourable for the outdoor event.
屋外イベントの天候は好都合でした。
A2 noun /ˈfiːtʃər/

feature

特徴
Meaning
a distinctive attribute or aspect of something; a characteristic
Example
The new phone has a unique camera feature.
新しい電話にはユニークなカメラの特徴があります。
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。
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。
C1 noun /ˈfɪʃ.ər/

fissure

ひび割れ
Meaning
a long, narrow opening or crack in a surface or object
Example
The earthquake caused a deep fissure in the road.
地震によって道路に深いひび割れができました。
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 verb /ˈfjuːmɪˌɡeɪt/

fumigate

燻蒸する
Meaning
to disinfect or purify an area by using chemical fumes
Example
They fumigated the warehouse to kill the insects.
彼らは昆虫を殺すために倉庫を燻蒸しました。
A1 adjective/verb/adverb /friː/

free

自由
Meaning
Not under the control or in the power of another; able to act or be done as one wishes.
Example
The children are free to play outside.
子供たちは外で自由に遊べます。
C2 adjective /ˈfraɪəbl/

friable

もろい
Meaning
Easily crumbled or reduced to powder.
Example
The old brick wall was friable and broke apart at a touch.
古いレンガの壁はもろく、触れると壊れました。
C2 noun /ˈfɪɡmənt/

figment

虚構, 想像
Meaning
something invented or imaginary; a fabrication of the mind
Example
The story of the haunted house is just a figment of her imagination.
幽霊屋敷の話は、彼女の想像の産物に過ぎない。
C1 noun/adjective ˈflɛdʒ.lɪŋ

fledgling

未熟者, 経験不足, 新しく設立された
Meaning
New, inexperienced, newly established.
Example
The fledgling startup needs investment.
その新興企業は投資が必要です。
B1 noun /ˈfæktər/

factor

要因
Meaning
A circumstance, fact, or influence that contributes to a result.
Example
Weather is an important factor in crop production.
天候は作物生産において重要な要因です。
B1 adjective /faɪˈnænʃəl/

financial

財務的
Meaning
relating to money, banking, or finance
Example
He made a sound financial decision by investing wisely.
彼は賢明に投資して、健全な財務的決定を下しました。
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 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。
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。
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。
C2 adjective /ˈfæl.oʊ/

fallow

休耕地
Meaning
Describing land that is left unplanted for a period to restore its fertility, allowing soil to recover nutrients and break pest and disease cycles.
Example
Farmers leave their fields fallow to restore soil fertility.
農家は土壌の肥沃度を回復させるために畑を休ませます。
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。
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 adverb /ˈfeɪθ.fəl.i/

Faithfully

忠実に
Meaning
in a loyal and steadfast manner; with dedication
Example
She faithfully attended every meeting despite her busy schedule.
彼女は忙しいスケジュールにもかかわらず、毎回忠実に会議に出席しました。
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。
B1 adverb /ˈfɔːtʃənətli/

fortunately

幸いにも
Meaning
by good luck; luckily
Example
Fortunately, no one was injured in the accident.
幸いにも、事故で誰も怪我をしませんでした。
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。
C2 adjective /ˈfraʊzi/

frowzy

だらしない
Meaning
Unkempt, messy, or having a musty, unpleasant smell.
Example
He entered the room with a frowzy appearance after sleeping on the couch.
彼はソファで寝た後、だらしない外見で部屋に入ってきました。
B1 noun /ˈfæn.si/

Fancy

興味; 想像やファンタジー
Meaning
a feeling of liking or wanting something; imagination or fantasy
Example
The child had a fancy for becoming a famous astronaut when he grew up.
その子供は大きくなったら有名な宇宙飛行士になることを夢見ていました。
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。
B2 noun /frɒk/

Frock

ワンピース
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.
小さな女の子は誕生日パーティーにピンクのワンピースを着て行きました。
C1 verb /fret/

fret

心配する
Meaning
to worry or be anxious; to be troubled
Example
Don't fret about the exam results.
試験結果について心配しないでください。
B2 noun /ˈfleɪvər/

flavor

味
Meaning
The distinctive taste of a food or drink.
Example
This ice cream has a delicious mango flavor.
このアイスクリームはおいしいマンゴーのフレーバーがあります。
C2 noun /ˈfɪli/

filly

若い雌馬
Meaning
a young female horse
Example
The filly ran swiftly across the meadow.
その若い牝馬は草原を速く走った。
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。
B2 adjective /ˈfræʤaɪl/

fragile

壊れやすい
Meaning
Easily broken or damaged; delicate.
Example
Be careful with that vase, it's very fragile.
その花瓶には気をつけて、すごく壊れやすいから。
B1 noun /flæʃ/

Flash

フラッシュ; ひらめき
Meaning
a sudden brief burst of bright light; a very brief moment
Example
There was a bright flash of lightning followed by thunder.
雷鳴の後に明るい閃光がありました。
A2 adjective /fɪt/

Fit

適切な; 健康な; 良い体調の; 準備ができている
Meaning
suitable; appropriate; healthy; in good physical condition; ready
Example
He is fit and healthy.
彼はフィットで健康です。
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。
C1 adjective /ˈfrɔːdjʊlənt/

fraudulent

詐欺的な
Meaning
Involving or using deceit, especially criminal deception.
Example
He was arrested for making fraudulent insurance claims.
彼は詐欺的な保険金請求を行ったため逮捕されました。
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.
C2 noun /ˈfriːˌθɪŋkər/

freethinker

自由思想家
Meaning
A person who forms opinions based on reason and independent thought rather than tradition or authority.
Example
Voltaire was considered a great freethinker of his time.
ヴォルテールは彼の時代の偉大な自由思想家と見なされていました。
B2 adjective /ˈfjʊə.ri.əs/

Furious

怒っている; 激怒した; 暴力的な;
Meaning
extremely angry; violent; fierce;
Example
She was furious when she discovered the mistake.
彼女はその間違いを発見したとき、怒っていました。
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 adjective /ˈfrɪvələs/

frivolous

取るに足らない
Meaning
Not having any serious purpose or value; silly or unimportant.
Example
She dismissed the frivolous complaint quickly.
彼女は取るに足らない苦情をすぐに却下しました。
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。
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。
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 noun /ˈfɑːr.mər/

Farmer

農家
Meaning
a person who grows crops or raises animals for food or profit
Example
The farmer planted rice in the fertile fields this season.
This season, the farmer planted rice in the fertile fields.
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。
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。
C2 verb /ˈflʌməks/

flummox

困惑させる
Meaning
To confuse or bewilder someone completely.
Example
The complicated puzzle flummoxed the students.
その複雑なパズルは学生を困惑させた。
C1 adjective /ˈfɪs.kəl/

fiscal

財政の
Meaning
Relating to government revenue, especially taxes, or public money management.
Example
The government introduced new fiscal policies to control inflation.
政府はインフレを抑制するために新しい財政政策を導入しました。
B2 noun /fiːst/

Feast

祝宴; 宴会
Meaning
a large meal, typically one in celebration of something; an annual religious celebration
Example
The wedding feast included traditional dishes from both families' cultures.
結婚式の祝宴には両家の文化からの伝統的な料理が含まれていました。
B1 noun /ˈfɛloʊ/

fellow

仲間
Meaning
a person who shares a common situation, interest, or activity with another
Example
He is a fellow student in my class.
彼は私のクラスの仲間です。
B1 noun freɪm

Frame

額縁
Meaning
A rigid structure that surrounds something such as a picture, door, or windowpane.
Example
A framed family tree can be displayed in your home.
額縁に入れた家系図は家で展示できます。
C1 verb /fɔːrˈɡoʊ/

forgo

控える
Meaning
to decide not to do or have something
Example
She decided to forgo dessert to maintain her diet.
彼女はダイエットを維持するためにデザートを控えることを決めました。
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。
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。
B1 noun /fəˈsɪl.ɪ.ti/

facility

施設
Meaning
A place, amenity, or piece of equipment provided for a particular purpose.
Example
The facility was well-maintained.
施設はよく管理されていました。
C2 adjective /ˈfiːtɪd/

foetid

腐った
Meaning
having an offensive, unpleasant smell
Example
The foetid smell from the garbage made it hard to breathe.
ゴミからの腐った臭いで呼吸が困難になった。
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 adjective /fɔːrˈsiːəbl/

foreseeable

予測可能な
Meaning
Able to be predicted or expected in advance
Example
The company is unlikely to make changes in the foreseeable future.
その会社は予測可能な未来において変化を起こす可能性は低い。
C1 adjective /frəˈnɛtɪk/

frenetic

狂乱の
Meaning
Fast and energetic in a wild or uncontrolled way.
Example
The stock market experienced frenetic trading after the announcement.
発表後、株式市場は狂乱の取引を経験しました。
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。
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。
B2 noun ˈflaɪ.ɪŋ kɑːrz

flying cars

空飛ぶ車
Meaning
Vehicles that can travel both on roads and in the air.
Example
Flying cars could soon solve urban traffic congestion.
空飛ぶ車はすぐに都市の交通渋滞の問題を解決できるでしょう。
B1 adjective /ˈfɔːrmər/

former

元
Meaning
Having been previously in a particular role or position.
Example
He is a former president of the association.
彼はその協会の元会長です。
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.
C2 adjective /ˈfʊtˌluːs/

footloose

自由な
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.
卒業後、彼は自由を感じ、世界を探索する準備ができていました。
C1 noun /fɑːrs/

farce

茶番
Meaning
a comic dramatic work using buffoonery and horseplay, or a ridiculous situation
Example
The meeting turned into a complete farce with everyone arguing.
会議は完全に茶番に変わり、みんなが議論していた。
A1 adjective /ˈfʌn.i/

Funny

面白い; 変な; おかしい;
Meaning
humorous; strange; amusing;
Example
He told a funny joke that made everyone laugh.
彼はみんなを笑わせた面白いジョークを言いました。
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 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。
B1 noun /ˈflaʊər veɪs/

Flower-vase

花瓶
Meaning
a decorative container used to hold cut flowers
Example
She placed beautiful roses in the flower vase on the table.
彼女はテーブルの上に花瓶に美しいバラを置きました。
C1 noun ˌfɜːr.tɪ.laɪˈzeɪ.ʃən

fertilization

肥料施用
Meaning
The process of adding nutrients to soil to increase crop productivity.
Example
Organic fertilization enhances soil health.
有機肥料施用は土壌の健康を改善します。
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 adverb /ˈfræŋkli/

Frankly

率直に; 正直に;
Meaning
honestly; openly; in a direct manner
Example
Frankly, I think this plan needs more consideration.
率直に言うと、この計画にはもっと考慮が必要だと思います。
C1 noun fɔːlt ˈtɒl.ər.əns

fault-tolerance

フォールトトレランス
Meaning
The ability of a system to continue operating properly in the event of the failure of some of its components.
Example
Fault-tolerance ensures dependable systems.
フォールトトレランスは信頼性のあるシステムを保証します。
A1 noun/verb /fɪʃ/

fish

幸せ
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.
彼女は賞を受け取ったとき、幸せを隠すことができなかった。
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。
C2 verb /ˈfrɪzəl/

frizzle

食べ物をカリカリで縮れた状態にする
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.
ベーコンがフライパンでシズシズ音を立てながら焼け始めました。
B2 noun /ˈfræk.ʃən/

Fraction

分数; 部分
Meaning
a numerical quantity that is not a whole number; a small or tiny part of something
Example
Only a small fraction of the population voted in the local election.
地方選挙で投票したのは人口のごく一部に過ぎなかった。
A1 verb /flaɪ/

fly

飛ぶ
Meaning
to move through the air using wings or in an aircraft
Example
Birds fly south for the winter.
鳥は冬に南へ飛ぶ。
B2 verb ˈfɔːr.mjə.leɪt

formulate

策定する
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.
会社は拡張戦略を策定する必要があります。
C1 verb /fɔːrˈɡoʊ/

forego

断る
Meaning
to decide not to do or have something pleasant or valuable
Example
She decided to forego dessert to maintain her diet.
彼女はダイエットを維持するためにデザートを断ることに決めました。
A1 verb /faɪnd/

find

見つける
Meaning
to discover or locate something that was lost or hidden
Example
I can't find my keys anywhere.
私はどこにも鍵を見つけられません。
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 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 verb /fɪˈlɪsɪˌteɪt/

felicitate

祝う
Meaning
to congratulate; to express good wishes
Example
We felicitated the graduating students at the ceremony.
私たちは式で卒業生を祝いました。
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。
B2 noun, verb /ˈfaɪlɪŋ/

filing

書類提出; 書類の整理
Meaning
the act of submitting documents; the process of organizing papers
Example
The lawyer handled the filing of all court documents.
弁護士はすべての裁判所文書の提出を扱いました。
B2 noun /fleɪm/

Flame

炎
Meaning
a hot glowing body of ignited gas that is generated by something on fire
Example
The candle flame flickered gently in the evening breeze.
キャンドルの火花が夕暮れの風に揺れていました。
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.
C2 adjective /ˈfɒp.ɪʃ/

Foppish

自分の外見や服に過剰にこだわる; 服装にうぬぼれがある
Meaning
excessively concerned with one's appearance and clothes; vain about dress
Example
His foppish behavior and expensive clothes made him stand out.
彼のフォピッシュな態度と高価な服は彼を目立たせました。
B2 verb /ˈfæs.ɪ.neɪt/

fascinate

魅了する
Meaning
to attract and hold the attention of someone; to charm or captivate
Example
The magician's performance fascinated the audience.
マジシャンのパフォーマンスは観客を魅了した。
B2 noun /ˈfɜː.tɪ.laɪ.zər/

fertilizer

肥料
Meaning
a substance added to soil to make plants grow more successfully
Example
Farmers use fertilizer to increase crop production.
農家は作物の生産量を増やすために肥料を使用します。
C2 adjective /ˈfʌsti/

fusty

かび臭い、古臭い
Meaning
smelling stale, damp, or stuffy; old-fashioned
Example
The room smelled fusty after being closed for months.
部屋は数ヶ月間閉め切られていた後、かび臭くなった。
B2 verb /fliː/

flee

逃げる
Meaning
To run away from danger or a threatening situation.
Example
The villagers had to flee during the flood.
村人たちは洪水の間に逃げなければなりませんでした。
C1 noun /fjuːd/

feud

争い, 敵意
Meaning
a prolonged and bitter quarrel or conflict, often between families or groups
Example
The two families have been in a feud for generations.
二つの家族は世代を超えて争い続けています。
B1 adjective /fɒnd/

fond

好き
Meaning
having a strong liking or affection for something or someone
Example
She is fond of painting and spends hours in front of her canvas.
彼女は絵を好きで、キャンバスの前で何時間も過ごします。
B2 noun ˈfeɪs tə ˈfeɪs ˈbætl

face-to-face battle

面と面の戦い
Meaning
A direct confrontation or fight between opposing forces.
Example
The warriors fought a face-to-face battle with the enemies.
戦士たちは敵と面と面で戦った。
B2 verb /ˈfrʌsˌtreɪt/

frustrate

フラストレートする
Meaning
to prevent from accomplishing; to make someone feel annoyed
Example
The traffic jam frustrated all the commuters.
渋滞はすべての通勤者をフラストレートさせました。
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 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。
B2 noun /ˌfæs.ɪˈneɪ.ʃən/

Fascination

魅力; 魅了; 魅力的な興味
Meaning
the power to fascinate someone; the state of being intensely interested
Example
Her fascination with ancient history led her to become an archaeologist.
彼女の古代史への魅力は、彼女を考古学者にさせました。
C2 noun /ˈfʊl.krəm/

fulcrum

支点
Meaning
The point or support on which a lever pivots; a central or essential point of activity or support.
Example
The teacher became the fulcrum of change in the school.
教師は学校の変革の支点となった。
C1 verb /ˈfæbrɪkeɪt/

fabricate

作り上げる
Meaning
to invent or concoct something, often with the intent to deceive; or to construct or manufacture
Example
The witness fabricated his testimony to protect himself.
証人は自分を守るために証言をでっち上げました。
C1 noun ˌfræɡ.mənˈteɪ.ʃən

fragmentation

フラグメンテーション
Meaning
The process or state of breaking or being broken into fragments.
Example
Habitat fragmentation threatens many species.
生息地のフラグメンテーションは多くの種に脅威を与えています。
C2 adjective /ˈfæn.sɪ.ləs/

fanciless

想像力のない、普通の
Meaning
without imagination or creativity; plain or ordinary
Example
His drawings were simple and fanciless.
彼の絵はシンプルで想像力がなかった。
C1 verb /ˈfʌmbəl/

fumble

不器用にする
Meaning
to handle something clumsily or to make mistakes while doing something
Example
He fumbled with the keys and dropped them on the floor.
彼は鍵で手間取って、それらを床に落としました。
C1 noun /fəˈtæləti/

fatality

致命的な事故
Meaning
An occurrence of death by accident, disaster, or violence.
Example
The accident resulted in one fatality.
その事故で1人が死亡した。
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 /ˈfɔːrmətɪv/

formative

形成的
Meaning
Having a lasting influence on a person's development or character.
Example
Childhood is often described as a formative stage in life.
子供時代は人生の中で形成的な段階としてよく説明されます。
B2 adjective /fɪərs/

Fierce

激しい; 攻撃的; 強い感情や決意を示す
Meaning
violent; aggressive; showing strong feeling or determination
Example
The fierce storm destroyed many houses in the village.
激しい嵐が村の多くの家を壊しました。
B1 verb /floʊt/

float

浮かぶ
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.
ボートは静かに川を下って浮かび始めました。
C1 noun /frəˈdʒɪl.ɪ.ti/

fragility

もろさ
Meaning
The quality of being fragile; delicateness.
Example
The cornea's fragility increases with rubbing.
角膜のもろさはこすることで増加します。