bedrock
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C1 noun /ˈbɛd.rɒk/

bedrock

基盤
Meaning
the solid rock layer beneath the soil; the fundamental basis of something
Example
Trust is the bedrock of a healthy relationship.
信頼は健康な関係の基盤です。
C1 verb /ˈbəʊl.stər/

bolster

強化する
Meaning
To support or strengthen; to prop up.
Example
The new policy aims to bolster economic growth.
新しい政策は経済成長を強化することを目的としています。
B1 noun /blæk ˈber.i/

Black berry

ブラックベリー
Meaning
a small dark purple or black fruit that grows on bushes
Example
We picked fresh blackberries from the garden for our pie.
私たちは庭から新鮮なブラックベリーを摘んでパイを作りました。
B2 noun /buːˈtiːk/

boutique

ブティックショップ
Meaning
a small shop that sells fashionable clothes or accessories
Example
She bought a beautiful dress from a boutique downtown.
彼女はダウンタウンのブティックショップで美しいドレスを買いました。
C1 noun /ˈbærɪˌtoʊn/

baritone

低い男性の声
Meaning
a male singing voice between tenor and bass
Example
The singer’s baritone voice impressed the audience.
歌手のバリトンの声は観客に感銘を与えました。
B2 noun /ˈbɒmər/

Bomber

爆撃機
Meaning
military aircraft designed to drop bombs on targets
Example
The bomber squadron flew over the city at dawn.
爆撃機部隊は夜明けに都市の上を飛んだ。
C1 verb /bɪˈsɛt/

beset

Meaning
to trouble, harass, or attack on all sides
Example
The village was beset by constant floods.
A1 interjection /baɪ/

bye

さようなら
Meaning
used to say goodbye; a short and informal farewell
Example
I said bye to her before leaving.
出発する前に彼女にさようならと言った。
C1 noun /beɪl/

bale

束
Meaning
A large bundle of goods tightly wrapped and bound.
Example
The workers loaded the bale of cotton onto the truck.
作業員は綿の束をトラックに積み込んだ。
C2 noun /bəˈθɪm.ə.tri/

bathymetry

水深測定学
Meaning
The measurement of depth of water in oceans, seas, or lakes.
Example
Bathymetry is essential for understanding oceanic topography.
バチメトリーは海洋の地形を理解するために不可欠です。
C1 verb /blɛər/

blare

大きな音を立てる
Meaning
to make a loud, harsh sound
Example
The car horns blared all night.
車のクラクションは一晩中鳴り響いていた。
C2 verb /bɪˈhuːv/

behoove

誰かが何かをすることが必要または適切である
Meaning
to be necessary, proper, or appropriate for someone to do
Example
It would behoove you to study before the exam.
試験の前に勉強することが必要です。
B2 verb /blʌʃ/

blush

顔を赤らめる
Meaning
to become red in the face due to embarrassment or shyness
Example
She blushed when he complimented her.
彼女は彼に褒められた時、顔が赤くなった。
C1 noun/adjective/verb /bʌf/

buff

映画ファン / 磨く
Meaning
A fan or enthusiast; also to polish or shine something.
Example
He is a movie buff who watches films every weekend.
彼は毎週末映画を観る映画ファンです。
C1 noun/adjective /ˈbaɪ.ɡɒn/

bygone

過ぎ去った
Meaning
Something belonging to an earlier time; past and no longer existing.
Example
He often talks about the traditions of bygone days.
彼はよく過去の日々の伝統について話します。
C2 noun /ˌbʌkəˈnɪər/

buccaneer

海賊
Meaning
a pirate, especially one active in the Caribbean during the 17th and 18th centuries
Example
The buccaneer sailed across the Caribbean in search of treasure.
その海賊はカリブ海を航海し、宝物を探していた。
B1 verb /ˈbɔːrdɪŋ/

boarding

搭乗
Meaning
Getting on or into a ship, aircraft, or other vehicle.
Example
The explorers were boarding the ship at the port.
探検家たちは港で船に乗り込んでいた。
C1 noun /blɒˈkeɪd/

Blockade

封鎖
Meaning
an act or means of sealing off a place to prevent goods or people from entering or leaving
Example
The naval blockade prevented supplies from reaching the port.
海上封鎖により物資が港に届くのを防ぎました。
A2 adjective /blaɪnd/

blind

Meaning
Unable to see because of injury, disease, or a congenital condition.
Example
He has been blind since birth.
A2 noun /brɛθ/

breath

呼吸
Meaning
The air taken into or expelled from the lungs during breathing.
Example
He took a deep breath before speaking.
彼は話す前に深く息を吸いました。
C2 verb /ˈbɜːrdʒən/

burgeon

急速に成長する
Meaning
To grow or develop rapidly; to flourish.
Example
The city's population began to burgeon after the new factory opened.
新しい工場が開設されてから、都市の人口は急速に増加し始めました。
C2 adjective /ˈbɪliəs/

bilious

胆汁の
Meaning
Relating to bile or an ill-tempered, irritable disposition.
Example
He became bilious after hearing the unfair criticism.
不公平な批判を聞いた後、彼は怒りっぽくなった。
C2 adjective /bɪˈfɒɡd/

befogged

混乱した, ぼんやりした
Meaning
Confused or clouded in mind; made unclear like being surrounded by fog.
Example
His mind felt befogged after the long and exhausting meeting.
長く疲れる会議の後、彼の心は混乱しているように感じた。
C2 noun /bɛk/

beck

合図 / 小川
Meaning
a gesture of beckoning; a small stream or brook (chiefly Northern English)
Example
The servant came at his master's beck and call.
召使いは主人の合図に即座に来ました。
C2 adjective /bɪˈnɪɡnənt/

benignant

慈悲深い, 親切な
Meaning
Kindly and benevolent in nature.
Example
The teacher’s benignant attitude made the students feel comfortable.
先生の寛大な態度が学生たちを快適にさせた。
B1 adjective /blæŋk/

blank

空白
Meaning
showing no expression or containing nothing written, printed, or recorded.
Example
Her face went blank when she heard the bad news.
悪いニュースを聞いたとき、彼女の顔は空白になった。
C1 adjective /bəˈnɑːl/ or /ˈbeɪnəl/

banal

平凡
Meaning
Lacking originality; boringly obvious and commonplace.
Example
His speech was full of banal clichés.
彼のスピーチは平凡なクリシェでいっぱいだった。
C2 verb /ˈbækbaɪt/

backbite

陰口を言う
Meaning
to speak negatively about someone who is not present; to slander behind someone’s back
Example
It is wrong to backbite your colleagues behind their backs.
同僚の陰口を言うのはよくない。
B2 noun /ˈbɜːrdn/

burden

負担
Meaning
a heavy load, especially one that is difficult to carry
Example
The financial burden was too heavy for him to bear.
財政的な負担は彼にとって非常に重かった。
A1 verb /bɪˈliːv/

believe

信じる
Meaning
to think that something is true; to have faith in
Example
I believe in hard work and dedication.
私は努力と献身を信じます。
C1 verb /bɔːk/

balk

拒否する
Meaning
to hesitate or refuse to proceed or comply
Example
She balked at signing the contract without reading it fully.
彼女は契約書を完全に読まずに署名することをためらった。
A2 noun /ˈbæskɪt/

basket

かご
Meaning
a container made of woven materials used for carrying or storing things
Example
She carried the apples in a basket.
彼女はバスケットにリンゴを入れて運んだ。
B2 noun /ˈbɒdiɡɑːrd/

bodyguard

ボディガード
Meaning
a person employed to protect someone from harm
Example
The celebrity arrived with her bodyguard.
その有名人はボディガードと一緒に到着した。
B1 noun /bɔɪl/

Boil

膿瘍; フロンケル
Meaning
a painful, pus-filled bump under the skin caused by infected hair follicles
Example
The painful boil on his neck required medical treatment.
彼の首にできた痛みを伴う膿瘍には医療処置が必要だった。
A2 noun /bɪər/

beer

ビール
Meaning
An alcoholic drink made from yeast-fermented malt flavored with hops.
Example
He ordered a glass of cold beer at the bar.
彼はバーで冷たいビールを注文した。
C1 adjective /ˈbeɪs.ləs/

Baseless

根拠のない; 事実無根の; 無根拠の
Meaning
without foundation; groundless; unfounded
Example
The accusations against him were completely baseless.
彼に対する告発は完全に根拠のないものでした。
B1 noun /bɪˈheɪvjər/

behavior

行動
Meaning
The way in which one acts or conducts oneself, especially toward others.
Example
The teacher praised her good behavior in class.
先生はクラスで彼女の良い行動を称賛しました。
C1 noun /ˈbʊl.ək/

Bullock

牛
Meaning
a young bull; a castrated bull used for farm work
Example
The farmer used a bullock to plow the field.
農夫は田んぼを耕すために牛を使いました。
C1 noun /beɪn/

bane

災い
Meaning
A cause of great distress, harm, or annoyance.
Example
Traffic jams are the bane of city life.
交通渋滞は都市生活の災いです。
A2 noun ˈbæl.əns

balance

バランス
Meaning
A condition in which different elements are equal or in the correct proportions.
Example
Balance among powers prevents conflicts.
権力のバランスは対立を防ぎます。
B1 noun /ˈbed ˌkʌv.ər/

Bed cover

ベッドカバー
Meaning
a protective covering for a bed, typically a bedspread or comforter
Example
She pulled the bed cover up to her chin to stay warm.
彼女は暖かさを保つためにベッドカバーを顎まで引き上げました。
B1 noun /bɪˈheɪ.vjər/

Behaviour

行動
Meaning
the way a person or animal acts or conducts themselves
Example
His behaviour at the meeting was very professional.
彼の会議での行動は非常にプロフェッショナルでした。
B1 noun /baɪˈɒlədʒi/

biology

生物学
Meaning
The scientific study of living organisms.
Example
Biology explains how plants and animals function.
生物学は植物や動物がどのように機能するかを説明します。
B2 noun, verb /bəˈfeɪ/ (noun), /ˈbʌfɪt/ (verb)

buffet

Meaning
A meal where guests serve themselves from a variety of dishes arranged on a table; also means to strike repeatedly (as a verb).
Example
We enjoyed a large buffet at the wedding reception.
C2 verb /bɪˈfɒɡ/

befog

ぼやけさせる
Meaning
to confuse or make unclear; to cover with fog or mist
Example
His mind was befogged by exhaustion.
彼の心は疲れによってぼやけていた。
A1 noun/verb /bæŋk/

bank

銀行
Meaning
an institution where money is kept and managed; or to tilt in movement (like an airplane or riverbank)
Example
She deposited the money in the bank.
彼女は銀行にお金を預けました。
B2 verb /bɪˈtreɪ/

betray

裏切る
Meaning
to be disloyal to; to reveal secrets
Example
He felt betrayed by his closest friend.
彼は最も親しい友人に裏切られたと感じた。
B2 adjective /bliːk/

bleak

陰鬱な
Meaning
cold, miserable, or without hope
Example
The future seemed bleak after the economic downturn.
経済不況後、未来は陰鬱に見えた。
B1 noun /ˈbaɪbəl/

bible

聖書
Meaning
the Christian scriptures consisting of the Old and New Testaments; also used for any authoritative book
Example
She reads the Bible every morning.
彼女は毎朝聖書を読みます。
C2 verb /bɪˈhəʊv/

behove

適切である
Meaning
British spelling of 'behoove'; to be appropriate or necessary
Example
It would behove the company to listen to its customers.
会社は顧客の意見に耳を傾けるべきです。
B2 adverb /ˈblʌnt.li/

Bluntly

率直に; ぶっきらぼうに
Meaning
in a direct way without trying to be polite; frankly
Example
He told her bluntly that she was wrong.
彼は彼女に正直に間違っていると言った。
C1 noun /brʌnt/

brunt

主な影響
Meaning
the worst part or main impact of something unpleasant
Example
The small town bore the brunt of the storm.
小さな町は嵐の主な影響を受けました。
C1 noun /ˈbaɪ.laɪn/

byline

作家の名前の行
Meaning
A line in a newspaper or magazine article that names the writer.
Example
Her byline appeared on the front page of the newspaper.
彼女の名前は新聞の一面に載っていました。
B2 adjective /ˌben.ɪˈfɪʃ.əl/

beneficial

有益な
Meaning
Resulting in good; favorable or advantageous.
Example
Eye rubbing can be beneficial in moderation.
目をこすることは適度であれば有益です。
B2 noun /ˈblɒkˌtʃeɪn/

blockchain

ブロックチェーン
Meaning
A system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system
Example
Blockchain technology ensures transparency in financial transactions.
ブロックチェーン技術は金融取引の透明性を保証します。
A2 noun /ˈbɑt.əm/

Bottom

底; 最下部
Meaning
the lowest point or part of something; the ground under a body of water
Example
The treasure chest was lying at the bottom of the ocean.
宝物の箱は海の底にあった。
C2 noun /ˈbɒmbæst/

bombast

大げさな言葉
Meaning
speech or writing that is overly pompous and inflated
Example
His campaign speech was full of bombast but lacked real substance.
彼の選挙演説はボンバストに満ちていたが、実際の実質は欠けていた。
A1 noun, verb /baɪk/

bike

自転車
Meaning
a bicycle or motorcycle; to ride a bicycle
Example
He biked to school every day.
彼は毎日自転車で学校に行きました。
B1 noun /ˈbɜː.nɪŋ/

burning

燃焼
Meaning
The process of combustion of inflammable materials producing heat and light and (typically) smoke.
Example
Burning garbage exacerbates air pollution.
ゴミを燃やすことは大気汚染を悪化させます。
A1 adjective /braʊn/

Brown

茶色
Meaning
having the color of earth or wood; dark colored
Example
She has beautiful brown eyes that sparkle in the sunlight.
彼女は太陽の光で輝く美しい茶色の目を持っています。
B2 noun /ˈbælət/

ballot

投票用紙
Meaning
a process of voting, usually in secret; the paper used to record a vote
Example
Voters cast their ballot in the election.
有権者は選挙で投票用紙を投じました。
B2 noun /buːθ/

booth

ブース
Meaning
a small enclosed space or area used for a specific purpose, such as voting or selling.
Example
He went into the voting booth to cast his ballot.
彼は投票ブースに入り、投票をしました。
B1 noun /ˈbɔr.dər/

Border

国境
Meaning
a line separating two political or geographical areas, especially countries
Example
They crossed the border between France and Spain by train.
彼らは電車でフランスとスペインの間の国境を越えました。
B1 verb /breɪk/

brake

Meaning
to slow down or stop a vehicle by applying a brake
Example
He braked suddenly to avoid hitting the dog.
C2 noun /ˈbroʊɡən/

brogan

重い靴
Meaning
A heavy, sturdy shoe, often made of leather.
Example
The farmer wore old brogans while working in the field.
農夫は畑で働いている間、古いブローガンを履いていました。
A2 verb /bɜːrn/

burn

燃える
Meaning
to be on fire; to damage with fire or heat
Example
The candle will burn for several hours.
キャンドルは数時間燃え続けます。
C2 adjective /ˈbrækɪʃ/

brackish

塩水混合
Meaning
Slightly salty, often describing water that is a mix of fresh and seawater.
Example
The river estuary contained brackish water.
川の河口には塩水混合の水があった。
A2 verb /bit/

beat

叩く
Meaning
to strike repeatedly; to defeat; to pulsate rhythmically
Example
Our team will beat theirs in the final match.
私たちのチームは決勝戦で彼らに勝ちます。
C2 noun /ˌbaɪ.oʊ.rɪˌmiː.diˈeɪ.ʃən/

bioremediation

バイオレメディエーション
Meaning
The use of living organisms to neutralize or remove environmental contaminants.
Example
Bioremediation helps remove toxins from polluted soil.
バイオレメディエーションは汚染された土壌から毒素を取り除くのに役立ちます。
A2 verb /blɒk/

block

ブロックする
Meaning
to obstruct; to prevent passage or progress
Example
The fallen tree blocks the road.
倒れた木が道路をブロックしています。
C2 noun /ˈbrɪmˌstoʊn/

brimstone

Meaning
Sulfur, especially when considered as fiery and associated with hell or divine punishment.
Example
The preacher spoke of fire and brimstone to warn the congregation.
B1 noun /bɪˈhɑːf/

behalf

を代表して
Meaning
as a representative of someone; in the interest of someone
Example
She accepted the award on behalf of her team.
彼女はチームを代表して賞を受け取りました。
B1 verb /ˈberi/

bury

埋める
Meaning
to put in the ground; to hide; to cover completely
Example
The dog buries its bone in the yard.
犬は庭に骨を埋める。
C1 noun /brəˈzɪər/

Brassiere

ブラジャー
Meaning
a woman's undergarment designed to support the breasts
Example
She bought a comfortable brassiere for daily wear.
彼女は日常的に着るために快適なブラジャーを買いました。
B2 noun /ˈbeɪ.zəl/

Basil

バジル
Meaning
an aromatic herb with green leaves used in cooking, especially Italian cuisine
Example
The pasta sauce was flavored with fresh basil.
パスタソースには新鮮なバジルが加えられていました。
A1 adjective /ˈbjuː.tɪ.fəl/

Beautiful

美しい; 魅力的な; 魅惑的な;
Meaning
pleasing to the senses; attractive; having qualities that give great pleasure
Example
She has a beautiful voice that captivates everyone.
彼女はすべての人を魅了する美しい声を持っています。
C2 noun /ˈbɛnɪsən/

benison

祝福
Meaning
A blessing or benefit.
Example
The rain was a benison for the drought-stricken farmers.
その雨は干ばつに苦しむ農民たちにとって祝福でした。
A2 noun /ˈbɪznəsˌwʊmən/

businesswoman

実業家の女性
Meaning
a woman who works in business, especially one who owns or manages a company
Example
The businesswoman expanded her company into international markets.
その実業家の女性は会社を国際市場へ拡大した。
C1 noun /ˈbɪɡ.ət/

bigot

偏見者
Meaning
A person who is intolerant toward those holding different opinions or beliefs.
Example
He was called a bigot for refusing to listen to others' views.
他人の意見を聞こうとしなかったため、彼は偏見者と呼ばれました。
B2 noun ˌbaɪ.oʊ.dɪˈvɝː.sə.t̬i

biodiversity

生物多様性
Meaning
The variety of life in the world or in a particular habitat or ecosystem.
Example
Rainforests are home to immense biodiversity.
熱帯雨林は膨大な生物多様性を持っています。
A2 noun/verb /bəˈluːn/

balloon

風船
Meaning
A small bag made of thin rubber or similar material that can be inflated with air or gas; as a verb, to expand rapidly.
Example
The children played with a red balloon at the party.
子供たちはパーティーで赤い風船で遊んでいました。
C1 noun /bɑːm/

balm

軟膏
Meaning
A soothing ointment or something that provides comfort or relief.
Example
The balm helped relieve the pain from her sunburn.
そのバームは日焼けの痛みを和らげるのに役立ちました。
C2 noun /ˈbrɪɡ.ənd/

brigand

山賊
Meaning
A member of a gang that ambushes and robs people in forests or mountains; a bandit.
Example
The travelers were attacked by brigands in the mountains.
旅行者は山中で山賊に襲われました。
C1 noun /bʊk ˈbaɪn.dər/

Book binder

本の製本工
Meaning
a person whose job is to fasten the pages of books together and put covers on them
Example
The old book binder carefully restored the antique manuscript.
古い本の製本工は古文書を慎重に修復しました。
C1 noun /ˈbɛərnəs/

bareness

裸の状態
Meaning
the state of being bare or uncovered; lack of decoration, warmth, or concealment
Example
The bareness of the room made it feel cold and unwelcoming.
部屋の裸の状態が冷たく居心地の悪い感じを与えた。
B2 noun /brɑːnz/

bronze

銅
Meaning
a metal made by combining copper and tin, often used for statues and medals
Example
The statue was made of solid bronze.
その像は固い銅でできていました。
B2 noun, verb /bluːm/

bloom

咲く；繁栄する
Meaning
to produce flowers; to develop or flourish; a flower or the state of flowering
Example
The roses bloom beautifully every spring.
バラは毎年春に美しく咲きます。
B2 noun, verb /ˈblɒsəm/

blossom

花が咲く
Meaning
a flower or mass of flowers on a tree or plant; to develop or flourish
Example
The small garden began to blossom in spring.
小さな庭は春に花が咲き始めた。
B2 verb /blɪŋk/

blink

まばたきする
Meaning
to close and open the eyes quickly.
Example
She blinked rapidly to clear the dust from her eyes.
彼女は目からほこりを取り除くために素早く瞬きをした。
B2 adjective /ˈbʌmpi/

Bumpy

でこぼこした; ざらざらした
Meaning
having an uneven surface; rough; jolting
Example
The bumpy road made the car ride very uncomfortable.
でこぼこした道で車の乗り心地はとても不快だった。
C2 noun /ˈbræɡərt/

braggart

自慢屋
Meaning
a person who boasts about achievements or possessions
Example
No one liked him because he was such a braggart.
誰も彼を好きではなかった、なぜなら彼は大きな自慢屋だったから。
B1 noun /ˈbaɪər/

buyer

買い手
Meaning
a person who makes a purchase
Example
The buyer inspected the car before making payment.
買い手は支払い前に車を検査しました。
B2 verb, noun, adjective /baʊnd/

bound

制限された / 縛られた
Meaning
To move with large strides or jumps; also refers to being tied, limited, or certain.
Example
The dog bounded across the field with joy.
犬は喜んでフィールドを跳ねました。
C2 noun /ˈbʌɡəˌbuː/

bugaboo

恐怖 / 不安
Meaning
An object of fear or worry; an imagined cause of anxiety.
Example
The threat of inflation became a political bugaboo.
インフレーションの脅威は政治的な恐怖に変わった。
C1 noun /ˈbæs.ti.ən/

bastion

要塞, 防衛拠点
Meaning
a stronghold or fortification; a place or institution strongly defending particular principles
Example
The castle stood as a bastion against enemy attacks.
その城は敵の攻撃に対する要塞として立っていました。
A1 noun /biːtʃ/

beach

ビーチ
Meaning
An area of sand or small stones beside the sea or a lake.
Example
They spent the day relaxing on the beach.
彼らはビーチでリラックスして一日を過ごしました。
B2 noun, verb /bʌt/

butt

Meaning
to hit or push with the head or horns; the end part of something, especially a cigarette
Example
The goat butted the fence with its horns.
C2 adjective /ˈboʊvaɪn/

bovine

牛に関連する
Meaning
relating to cattle; showing a dull or sluggish nature
Example
Her bovine expression revealed no emotions.
彼女のボバインな表情は感情を示すことはなかった。
A1 adjective /bæd/

bad

悪い
Meaning
not good; unpleasant, harmful, or of poor quality
Example
The milk smells bad, so don’t drink it.
牛乳は悪臭がするので飲まないでください。
C2 noun /bɜːrˈlɛsk/

burlesque

バーレスク
Meaning
A humorous and exaggerated imitation of a serious work; a type of theatrical entertainment involving comedy and parody.
Example
The play was a clever burlesque of traditional opera.
その劇は伝統的なオペラの巧妙なバーレスクでした。
C1 adjective /ˈbleɪtənt/

blatant

明白な
Meaning
done openly and unashamedly; obvious and offensive
Example
The company's blatant disregard for safety regulations angered the public.
その企業の安全規制に対する公然たる軽視が、一般市民の怒りを買った。
C2 noun /ˌbuː.ɡənˈvɪl.i.ə/

Bougainvillea

ブーゲンビリア
Meaning
a tropical climbing plant with colorful bracts surrounding small flowers
Example
The bougainvillea climbing over the garden wall creates a beautiful purple display.
庭の壁を登るブーゲンビリアが美しい紫色の展示を作り出します。
C2 noun /ˈbɔːlsəm/

Balsam

バルサムの花
Meaning
a flowering plant with colorful blooms that often open in the evening; also refers to aromatic resin
Example
The garden balsam flowers bloomed beautifully in various shades of pink and purple.
庭のバルサムの花はピンクと紫のさまざまな色合いで美しく咲いていました。
B2 noun /beɪ/

Bay

湾
Meaning
a broad inlet of the sea where the land curves inward
Example
The boats are anchored in the bay.
ボートは湾に停泊しています。
C2 verb /ˈbɜːrnɪʃ/

burnish

Meaning
To polish something by rubbing; to enhance or improve.
Example
He burnished the old table until it shone.
C1 phrase ˌbaɪ.oʊ.daɪˈvɜː.sɪ.ti ˌprez.əˈveɪ.ʃən

biodiversity preservation

生物多様性の保護
Meaning
The protection and conservation of the variety of life in all its forms, including different species, genetic diversity, and ecosystems.
Example
Biodiversity preservation is critical for ecological balance.
生物多様性の保護は生態系のバランスにとって重要です。
B2 adjective /ˌbaɪəʊdɪˈɡreɪdəbl/

biodegradable

生分解性の
Meaning
Capable of being decomposed by natural biological processes, typically by bacteria or other living organisms, without causing harm to the environment.
Example
Biodegradable materials break down naturally without harming the environment.
生分解性の素材は自然に分解され、環境に害を与えることはありません。
C2 adjective, noun /bɪˈtroʊðd/

betrothed

婚約者
Meaning
Engaged to be married; a person who is engaged.
Example
She introduced him as her betrothed.
彼女は彼を婚約者として紹介しました。
C1 adjective /ˈbed.rɪd.ən/

Bedridden

寝たきり
Meaning
confined to bed; unable to leave one's bed due to illness or infirmity
Example
The elderly man has been bedridden for several months.
高齢の男性は数ヶ月間寝たきりになっています。
C1 verb /ˈbæfəl/

baffle

困惑させる
Meaning
to confuse; to be too difficult to understand
Example
The math problem baffles me completely.
数学の問題は私を完全に困惑させます。
B2 verb /briːd/

breed

繁殖する, 飼育する
Meaning
to produce young animals; to reproduce; to keep animals for producing young
Example
They breed horses on their farm.
彼らは農場で馬を育てています。
C2 noun /ˈbɑːrtərər/

barterer

物々交換者
Meaning
A person who trades goods or services without using money.
Example
The barterer exchanged fruits for some pottery.
物々交換者は果物を陶器と交換しました。
B1 noun /blæk ˈpep.ər/

Black Pepper

黒胡椒
Meaning
a hot-tasting spice made from dried peppercorns, widely used for seasoning food
Example
Season the steak with salt and freshly ground black pepper.
ステーキに塩と新鮮に挽いたブラックペッパーを振りかけてください。
B2 adjective /ˈbeə.rə.bəl/

Bearable

耐えられる; 我慢できる; あまり不快で痛みのない
Meaning
able to be endured; tolerable; not too unpleasant or painful
Example
The pain became bearable after taking the medicine.
薬を飲んだ後、痛みは耐えられるようになった。
A1 adverb /bɪˈhaɪnd/

Behind

後ろ
Meaning
at the back of; following; lagging
Example
The car behind us was honking.
私たちの後ろの車はクラクションを鳴らしていました。
C2 noun /ˈbʊljən/

bullion

金または銀のバルク
Meaning
Gold or silver in bulk before being coined or made into jewelry.
Example
The bank stores gold bullion in its vaults.
銀行は金の塊を金庫に保管しています。
C1 adjective /ˈbæʃ.fəl/

Bashful

恥ずかしがり屋; 内気な; 控えめな; 簡単に恥ずかしくなる
Meaning
shy; timid; modest; easily embarrassed
Example
The bashful child hid behind her mother when meeting strangers.
その恥ずかしがり屋の子供は、見知らぬ人と会うときに母親の後ろに隠れました。
B2 noun, verb /ˈblækmeɪl/

blackmail

脅迫する
Meaning
the act of demanding money or advantage by threatening to reveal secrets; to force someone to act by using such threats
Example
He tried to blackmail her by threatening to reveal the documents.
彼は書類を公表すると脅して彼女を脅迫しようとした。
B2 adverb /ˈbɪt.ə.li/

Bitterly

ひどく; 激しく
Meaning
in an angry, hurt, or resentful way; extremely; severely
Example
She complained bitterly about the unfair treatment.
彼女は不公平な扱いについてひどく不満を言った。
B2 noun /bleɪd/

Blade

刃
Meaning
a sharp flat cutting edge of a knife, sword, or tool
Example
The blade of the knife needs to be sharpened.
ナイフの刃は研がなければならない。
C2 noun /brəˈvjʊrə/

bravura

Meaning
a display of great skill and brilliance, especially in music or performance
Example
The pianist delivered a bravura performance that left the audience spellbound.