broach
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C1 verb /broʊtʃ/

broach

取り上げる
Meaning
to bring up a subject for discussion
Example
She decided to broach the topic of salary with her manager.
彼女はマネージャーと給料の話題を取り上げることに決めました。
C1 noun /bʌm/

bum

尻
Meaning
informal term for the buttocks; also a homeless or lazy person
Example
He sat on his bum all day doing nothing.
彼は一日中お尻に座って何もしなかった。
C1 adjective /bræʃ/

brash

図々しい
Meaning
self-assertive in a rude, noisy, or overconfident way
Example
His brash comments offended many people at the meeting.
彼の図々しいコメントは会議で多くの人々を怒らせました。
C1 noun /ˈblɪs.tər/

Blister

水ぶくれ
Meaning
a small bubble on the skin filled with serum and caused by friction, burning, or other damage
Example
The new shoes gave her a painful blister on her heel.
新しい靴が彼女のかかとに痛い水ぶくれを作った。
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。
C1 noun /ˈblɒk.ɪdʒ/

Blockage

詰まり
Meaning
an obstruction that makes movement or flow difficult or impossible
Example
The drain blockage caused water to overflow in the kitchen.
排水の詰まりがキッチンで水があふれた原因となりました。
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。
C1 noun /ˈbɪɡətri/

bigotry

偏見
Meaning
Intolerance toward those who hold different opinions or lifestyles.
Example
Her bigotry prevented her from accepting people with different beliefs.
彼女の偏見は、異なる信念を持つ人々を受け入れることを妨げていた。
C1 noun /bəˈtɒn/

baton

Meaning
A thin stick carried by a conductor to direct an orchestra, or used as a symbol of authority.
Example
The conductor raised his baton to begin the symphony.
C1 noun /bəˈnɛv.ə.ləns/

benevolence

慈善または優しさ
Meaning
The quality of being well meaning and kindly; the disposition to do good.
Example
His benevolence towards the poor earned him respect.
貧しい人々に対する彼の優しさは、彼に尊敬をもたらしました。
C1 adjective /ˈbɛndi/

bendy

柔軟な
Meaning
Easily curved or flexible.
Example
The bendy straw made it easier to drink from the cup.
曲がるストローでカップから飲むのが楽になった。
C1 adjective /bəˈlɪdʒ.ər.ənt/

belligerent

好戦的または攻撃的
Meaning
Hostile and aggressive, ready to fight or argue.
Example
His belligerent attitude often leads to conflicts.
彼の好戦的な態度はしばしば衝突を引き起こします。
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。
C1 verb /blæntʃ/

blanch

青ざめる
Meaning
to turn pale from shock, fear, or to briefly boil food to remove skin or prepare it
Example
She blanched at the sight of blood.
彼女は血を見て顔色が青ざめた。
C1 adjective /ˈbaɪtɪŋ/

Biting

噛む; 鋭い寒さ; 厳しい批評
Meaning
extremely cold; sharply critical or harsh
Example
The biting cold made everyone shiver.
鋭い寒さで皆が震えた。
C1 noun /ˈbɑːr.tər ˌsɪs.təm/

barter system

物々交換システム
Meaning
A system of exchange where goods and services are traded directly without using money.
Example
Ancient civilizations used the barter system for trade.
古代の文明は貿易のために物々交換システムを使用していました。
C1 noun /ˈblɛm.ɪʃ/

blemish

欠点
Meaning
A small mark or flaw that spoils the appearance of something.
Example
The mirror had a small blemish on the surface.
鏡には表面に小さな欠点があった。
C1 noun /ˌbaɪˈlæt.ər.əl nɪˌɡəʊ.ʃiˈeɪ.ʃənz/

bilateral negotiations

二国間交渉
Meaning
Negotiations or discussions between two parties, typically countries or organizations.
Example
Bilateral negotiations resolve disputes.
二国間交渉は紛争を解決する。
C1 verb /ˈbɛkən/

beckon

手招きする
Meaning
to signal or call someone to come closer, often with a gesture; to attract or invite
Example
She beckoned him to come closer with a wave of her hand.
彼女は手を振って彼に近くへ来るよう合図した。
C1 verb /bruːd/

brood

Meaning
to think deeply about something that makes one unhappy; also, a group of young birds hatched at the same time
Example
He sat alone, brooding over his failures.
C1 noun /blɪs/

Bliss

完全な幸せ; 大きな喜び
Meaning
perfect happiness; great joy
Example
She felt pure bliss while watching the beautiful sunset.
彼女は美しい夕日を見ながら純粋な幸せを感じました。
C1 adjective /bəˈroʊk/

baroque

バロック様式
Meaning
relating to a highly ornate and extravagant style of art, architecture, or music from the 17th and early 18th centuries; excessively elaborate or complex
Example
The church was decorated in a baroque style with intricate details.
教会はバロック様式で複雑な詳細で飾られていました。
C1 noun /ˈbrɛvɪti/

brevity

Meaning
Concise and exact use of words in writing or speech.
Example
The brevity of the speech kept the audience engaged.
C1 noun /ˈbænɪstər/

banister

手すり
Meaning
a railing supported by posts at the side of a staircase or balcony
Example
She held the banister tightly while going down the stairs.
彼女は階段を降りる時、手すりをしっかりと握っていた。
C1 noun /braɪn/

brine

塩水
Meaning
Water saturated with salt, often used for preserving food.
Example
The olives were stored in brine to keep them fresh.
オリーブは新鮮さを保つために塩水に保存されました。
C1 verb bɪˈkwiːð

bequeath

遺贈する
Meaning
Leave something to someone in a will; pass down or hand down to the next generation.
Example
The scientist bequeathed his research papers to the university.
科学者は彼の研究論文を大学に遺贈した。
C1 adjective /ˈbrɪtl/

brittle

壊れやすい
Meaning
easily broken or cracked; hard but liable to break
Example
The glass was so brittle that it cracked easily.
ガラスはとても壊れやすくて、簡単に割れました。
C1 verb /bɪˈriːv/

bereave

大切な人を失う
Meaning
to deprive someone of a loved one through death
Example
She was bereaved of her husband last year.
彼女は昨年、夫を亡くしました。
C1 noun /bəˈtæljən/

battalion

大隊
Meaning
A large body of soldiers ready for battle, typically consisting of several companies.
Example
The battalion was deployed to the front line.
その大隊は前線に展開されました。
C1 adjective /ˈbleɪmləs/

blameless

非の打ち所がない
Meaning
innocent of wrongdoing; not deserving blame
Example
She remained calm and blameless throughout the investigation.
彼女は調査中ずっと冷静で非の打ち所がなかった。
C1 adjective /ˈbɒt.əl ɡriːn/

Bottle-green

ボトルグリーン
Meaning
a dark green color similar to that of a green glass bottle
Example
She wore a beautiful bottle-green dress to the evening party.
彼女は夜のパーティーに美しいボトルグリーンのドレスを着ていた。
C1 noun /ˈbraɪ.dəl/

Bridle

手綱; 騎馬用具
Meaning
the headgear used to control a horse, consisting of buckled straps and a bit
Example
The rider adjusted the horse's bridle before mounting for the race.
騎手はレースの前に馬の手綱を調整した。
C1 noun /ˈblʌdˌbæθ/

bloodbath

血の大惨事
Meaning
an event in which a lot of people are killed or injured, especially in a violent conflict
Example
The war turned into a bloody bloodbath.
戦争は血まみれの大虐殺に変わった。
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。
C1 verb /ˈbɪkər/

bicker

些細なことで言い争う
Meaning
To argue or quarrel about trivial matters.
Example
The children began to bicker over the last piece of cake.
子供たちは最後のケーキの一切れをめぐって言い争いを始めた。
C1 adjective /ˈblaɪtɪd/

blighted

荒廃した
Meaning
Spoiled, damaged, or destroyed.
Example
The blighted neighborhood was abandoned by most residents.
荒廃した地域はほとんどの住民によって放棄されました。
C1 verb /ˈbɑːrtər/

barter

Meaning
To exchange goods or services without using money.
Example
They bartered their crops for handmade tools.
C1 noun/verb /brʊk/

brook

小川 / 容認する
Meaning
As a noun: a small natural stream; As a verb: to tolerate or endure something
Example
The village was built near a clear brook.
その村は清らかな小川の近くに建てられました。
C1 adjective /bɪˈmjuːzd/

bemused

困惑した, ぼんやりした
Meaning
confused, puzzled, or lost in thought
Example
She looked bemused when he asked the strange question.
彼が奇妙な質問をしたとき、彼女は困惑しているように見えた。
C1 verb /blɜːrt/

blurt

うっかり言う
Meaning
to say something suddenly without thinking
Example
He blurts out the secret accidentally.
彼はうっかり秘密を言ってしまう。
C1 adjective /bɪˈfɪt.ɪŋ/

Befitting

適切な; ふさわしい; 特定の状況や人に適している
Meaning
appropriate; suitable; proper for a particular situation or person
Example
He wore formal attire befitting the important occasion.
彼は重要な機会にふさわしい正式な服を着ていた。
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 verb /bɪˈsɛt/

beset

Meaning
to trouble, harass, or attack on all sides
Example
The village was beset by constant floods.
C1 verb, noun /ˈbreɪnˌwɒʃ/

brainwash

洗脳する
Meaning
to manipulate someone into adopting certain beliefs by repeated pressure or propaganda; the act or process of such manipulation
Example
The group tried to brainwash new members with constant propaganda.
その団体は新しいメンバーを洗脳しようとした。
C1 noun /bɪz/

Biz

ビジネス
Meaning
business (informal); commercial enterprise or activity
Example
He's been in the restaurant biz for twenty years.
彼は20年間、レストランのビジネスをしてきました。
C1 adjective /bɪˈriːvd/

Bereaved

悲嘆に暮れる
Meaning
having lost a loved one through death
Example
The bereaved family received many condolences.
悲嘆に暮れる家族は多くの弔辞を受け取った。
C1 adjective /ˌbaɪˈlæt.ər.əl/

bilateral

二国間
Meaning
An agreement or relationship between two parties that is mutual, two-sided, or reciprocal.
Example
The two countries signed a bilateral trade agreement.
二国は二国間貿易協定に署名しました。
C1 noun /ˈboʊ.ə/

Boa

ボアコンストリクター
Meaning
a large non-venomous snake that kills prey by constriction
Example
The boa constrictor wrapped around its prey.
ボアコンストリクターはその獲物を巻きつけました。
C1 verb /bʌdʒ/

budge

Meaning
To move slightly; to change one’s opinion or position.
Example
Despite the pressure, he refused to budge from his decision.
C1 adjective/verb /ˈbæntərɪŋ/

bantering

冗談を言う
Meaning
characterized by good-humored teasing or joking
Example
They had a bantering conversation at the café.
彼らはカフェで冗談交じりの会話をしていた。
C1 verb /ˈbædʒər/

badger

うるさくする, しつこくする
Meaning
To repeatedly ask or annoy someone with demands or questions.
Example
The reporter kept badgering the politician with questions.
記者は政治家に質問をし続けて嫌がらせをした。
C1 verb /ˈbɒɡəl/

boggle

困惑させる
Meaning
to overwhelm or confuse; to be astonished or puzzled by something
Example
The complexity of the puzzle boggled his mind.
パズルの複雑さが彼の頭を困惑させた。
C1 verb /bɒmˈbɑːrd/

bombard

Meaning
to attack continuously with bombs, questions, or other forces
Example
Reporters bombarded the minister with difficult questions.
C1 adjective /ˈbɑːmi/

balmy

穏やかで心地よい温かさ；癒し。
Meaning
Mild and pleasantly warm; soothing.
Example
We enjoyed a walk on a balmy summer evening.
私たちは穏やかな夏の夕方に散歩を楽しみました。
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。
C1 noun/verb /ˈbɔɪ/ or /ˈbuːi/

buoy

ブイ, 浮かべる
Meaning
A floating marker on water; to keep something afloat or encourage someone.
Example
The news buoyed their spirits after the loss.
ニュースは喪失後、彼らの気持ちを高めました。
C1 noun /blaɪt/

blight

枯れ病
Meaning
A disease or condition that causes plants to wither; something that spoils or damages.
Example
The drought was a blight on the farmer’s crops.
干ばつは農家の作物にとって枯れ病でした。
C1 noun /ˈbroʊkərɪdʒ/

brokerage

仲介業者
Meaning
A firm that acts as an intermediary between buyers and sellers, often charging a fee.
Example
The real estate brokerage helped them find a new home.
不動産仲介業者は彼らが新しい家を見つけるのを手伝った。
C1 verb /bɪˈstoʊ/

bestow

授与する
Meaning
To give or present something as a gift or honor.
Example
The king bestowed honors upon the brave soldiers.
王は勇敢な兵士に栄誉を授けました。
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。
C1 verb /bɪˈhoʊld/

behold

見る；目にする
Meaning
to see or observe something, especially something remarkable or impressive
Example
She stood quietly to behold the sunrise over the hills.
彼女は丘の上の日の出を見るために静かに立っていた。
C1 adjective bəˈnev.əl.ənt

benevolent

慈悲深い, 寛大な, 親切な
Meaning
Kind, generous, showing goodwill and kindness.
Example
His benevolent nature made him beloved.
彼の寛大な性格は彼をとても愛される人にしました。
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。
C1 adjective /bɪˈleɪtɪd/

belated

遅れた
Meaning
coming or happening later than expected or usual
Example
She sent me a belated birthday card.
彼女は遅れた誕生日カードを送ってくれた。
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。
C1 noun /brɛdθ/

breadth

幅
Meaning
The distance or measurement from side to side; width; a wide range.
Example
The breadth of his knowledge impressed everyone.
彼の知識の幅は皆に感銘を与えました。
C1 noun /ˈbed sted/

Bed stead

ベッドフレーム
Meaning
the framework of a bed; a bed frame without bedding
Example
The wooden bed stead was very sturdy.
木製のベッドフレームは非常に丈夫でした。
C1 verb /bɪˈhɛd/

behead

斬首する
Meaning
to cut off a person's or animal's head; to remove the leader or most important part
Example
The historical account describes how the traitor was beheaded as punishment.
歴史的記録は、罰として裏切り者が斬首された様子を描写している。
C1 noun /bəˈnæn.zə/

Bonanza

富、運、または利益の突然の増加を引き起こす状況や出来事
Meaning
a situation or event that creates a sudden increase in wealth, good fortune, or profits
Example
The oil discovery was a bonanza for the small country.
石油の発見は小さな国にとってボナンザでした。
C1 adjective /ˈbrɪslɪŋ/

bristling

逆立ちした; エネルギーに満ちた
Meaning
full of energy, anger, or excitement; showing bristles standing up
Example
He entered the room bristling with confidence.
彼は自信満々で部屋に入った。
C1 adjective /bɪˈnaɪn/

benign

Meaning
Gentle, kind, or not harmful (especially of a disease or tumor).
Example
The doctor assured her that the tumor was benign.
C1 adjective /ˈbaʊn.tɪ.fəl/

bountiful

豊富な / 寛大な
Meaning
Large in quantity; abundant; generous in giving.
Example
The farmer was grateful for the bountiful harvest.
農家は豊富な収穫に感謝していた。
C1 verb /bæsk/

bask

日向ぼっこ
Meaning
to lie in warmth and light; to enjoy something pleasurable
Example
The cat basks in the sunny window.
猫は日差しの差す窓辺で日向ぼっこをしている。
C1 verb /bɪˈɡɛt/

beget

生む / 引き起こす
Meaning
to bring about or give rise to; to father or produce
Example
Violence begets more violence.
暴力はさらなる暴力を生む。
C1 noun /bəˈrɑːʒ/

barrage

集中攻撃または速攻
Meaning
a concentrated outpouring of questions, criticisms, or blows; a rapid, continuous attack
Example
The politician faced a barrage of tough questions from reporters.
政治家は記者からの厳しい質問の集中攻撃に直面していました。
C1 adjective /bəˈzɜːrk/

berserk

狂気
Meaning
Out of control with anger or excitement; wild or frenzied.
Example
The fans went berserk when their team won the championship.
ファンはチームが優勝したとき、狂気になった。
C1 noun /ˈbɔɪənsi/ or /ˈbuːjənsi/

buoyancy

浮力, 快活
Meaning
The ability to float in a liquid; cheerfulness and optimism.
Example
Her natural buoyancy lifted the mood of the group.
彼女の自然な快活さがグループの雰囲気を高めた。
C1 noun /bɑːrb/

barb

とげ、鋭いコメント
Meaning
a sharp projection such as on a fishhook; a cutting remark
Example
The fishhook has a small barb to keep the fish from escaping.
釣り針には、魚が逃げないように小さなとげがあります。
C1 adjective /ˈbɔɪənt/ or /ˈbuːjənt/

buoyant

浮力のある、元気な
Meaning
Able to float easily; cheerful and optimistic.
Example
She remained buoyant despite the difficulties.
彼女は困難にもかかわらず前向きで元気でした。
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 /bəˈbuːn/

Baboon

バブーン
Meaning
a large African and Arabian primate with a dog-like snout and colorful buttocks
Example
The baboon troop gathered around the watering hole in the savanna.
バブーンの群れはサバンナの水場の周りに集まりました。
C1 noun /ˈbɪtər ɡɔːrd/

Bitter Gourd

ゴーヤ
Meaning
a green, bumpy vegetable with a very bitter taste, known for its medicinal properties
Example
Bitter gourd is excellent for controlling blood sugar levels.
ゴーヤは血糖値をコントロールするのに優れています。
C1 noun /brɪˈɡeɪd/

brigade

消防隊
Meaning
A large group of people organized for a specific purpose, especially a military unit.
Example
The fire brigade arrived quickly to put out the flames.
消防隊は火を消すために迅速に到着しました。
C1 adjective /ˈbʊkɪʃ/

Bookish

本好きな; 学問的な
Meaning
studious; scholarly; devoted to reading and studying
Example
She was known for her bookish nature and love of literature.
彼女は本好きな性格と文学への愛で知られていました。
C1 verb /bɪˈwɪldər/

bewilder

困惑させる
Meaning
to cause someone to be confused or puzzled
Example
The complex instructions bewildered the students.
複雑な指示は学生を困惑させました。
C1 adjective ˈbɜːdʒənɪŋ

burgeoning

急成長
Meaning
Beginning to grow or increase rapidly; flourishing.
Example
The burgeoning tech industry has attracted many investors.
急成長しているテクノロジー業界は、多くの投資家を引き付けました。
C1 noun /bɜːrθ/

Berth

寝台; 船、列車、または他の乗り物で寝る場所
Meaning
a sleeping place in a ship, train, or other vehicle; a place where a ship can dock
Example
I booked an upper berth on the overnight train.
私は夜行列車で上段の寝台を予約しました。
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。
C1 adjective /ˈboʊɡəs/

bogus

偽物
Meaning
false, fake, or not genuine
Example
The police arrested him for using a bogus ID card.
警察は偽のIDカードを使用したため、彼を逮捕しました。
C1 verb /bɪˈreɪt/

berate

叱る
Meaning
to scold or criticize angrily
Example
The teacher berated the student for being late.
先生は遅刻した生徒を叱った。
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 /bɪˈɡrʌdʒ/

begrudge

誰かが何かを持っていることに対して妬む / 何かを嫌々与える
Meaning
to resent someone for having something; to give reluctantly
Example
She did not begrudge him his success.
彼女は彼の成功に嫉妬しなかった。
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。
C1 noun /ˌbɪbliˈɒɡrəfi/

bibliography

参考文献リスト
Meaning
a list of books, articles, or other sources used or referred to in scholarly work
Example
The report includes a detailed bibliography at the end.
レポートには最後に詳細な参考文献リストが含まれています。
C1 verb /brɔɪl/

broil

グリルする
Meaning
To cook food by direct heat, usually under a grill or over a fire.
Example
She broiled the chicken until it was golden brown.
彼女は鶏肉を金色に焼くまで焼いた。
C1 noun /beɪl/

bail

保釈
Meaning
the temporary release of an accused person awaiting trial, often with a financial guarantee
Example
He was granted bail after his arrest.
逮捕後、彼は保釈されました。
C1 noun, verb /ˈbʌtrəs/

buttress

支柱, 支え
Meaning
a structure built against a wall for support; to support or strengthen
Example
The cathedral walls were buttressed to prevent collapse.
大聖堂の壁は崩壊を防ぐために支えられていました。
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 /ˈbæbəl/

babble

おしゃべりする
Meaning
to talk rapidly and continuously in a foolish way
Example
The baby babbles all day long.
赤ちゃんは一日中おしゃべりしています。
C1 noun /bɑːrˈbeəriən/

Barbarian

野蛮人; 未開人;
Meaning
a person from an uncivilized group; someone who is cruel or brutal
Example
The ancient Romans considered anyone outside their empire to be barbarians.
古代ローマ人は自分たちの帝国の外にいる者たちを野蛮人と見なしていた。
C1 noun /ˈbeɪlɪf/

bailiff

裁判所の執行官
Meaning
An official who keeps order in a court, carries out court orders, or collects debts.
Example
The bailiff asked everyone to rise as the judge entered the courtroom.
裁判官が法廷に入ったとき、執行官は皆に立ち上がるように言いました。
C1 verb /bɪˈsiːdʒ/

besiege

包囲する
Meaning
to surround a place with armed forces to capture it; to overwhelm with requests or attention
Example
The city was besieged by enemy troops.
その都市は敵軍によって包囲されました。
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。
C1 noun /bɒɡ/

bog

沼地
Meaning
an area of wet, spongy ground; a swamp or marsh
Example
The hikers got stuck in a bog.
ハイカーたちは沼地に足を取られました。
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。
C1 verb /ˈblækən/

blacken

黒くする
Meaning
to make something black or darker; to stain, soil, or tarnish
Example
Smoke from the fire began to blacken the walls.
火事の煙が壁を黒くし始めた。
C1 noun /blɜːrb/

blurb

宣伝文
Meaning
a short promotional description of a book, product, or service
Example
The back cover had a blurb praising the novel.
本の裏表紙にはその小説を称賛する宣伝文があった。
C1 verb, noun /ˈbʌsəl/

bustle

騒々しさ、忙しさ
Meaning
to move in an energetic or noisy manner; busy activity in a place
Example
The marketplace bustled with vendors and customers.
市場は販売員と顧客で賑わっていた。
C1 noun /ˈblʌd.ʃed/

Bloodshed

流血; 大虐殺
Meaning
the killing or wounding of people, typically in large numbers during a conflict
Example
The peace treaty was signed to prevent further bloodshed.
平和条約はさらなる流血を防ぐために署名されました。
C1 adjective, noun /ˈbʊrʒ.wɑː/

bourgeois

ブルジョア
Meaning
Relating to the middle class, often with materialistic values or conventional attitudes.
Example
The novel criticizes the bourgeois lifestyle of the city dwellers.
その小説は都市住民のブルジョア生活様式を批判している。
C1 noun /ˈbæləd/

ballad

叙事歌
Meaning
a narrative song or poem, often sentimental or romantic
Example
The singer performed a moving ballad about lost love.
歌手は失われた愛について感動的なバラッドを披露しました。
C1 noun /ˈbɜːrθraɪt/

birthright

生まれつきの権利
Meaning
A privilege or possession that a person has from birth.
Example
Freedom is considered a birthright of every individual.
自由はすべての個人の生まれつきの権利と見なされます。
C1 adjective /ˈbloʊtɪd/

bloated

膨れた
Meaning
swollen or puffed up, often unpleasantly
Example
After the big meal, he felt bloated and uncomfortable.
大きな食事の後、彼は膨れた感じで不快に感じていた。
C1 noun /ˈbenɪˌfæktər/

Benefactor

恩人; 支援者; 寄付者
Meaning
a person who gives money or other help to support a person or cause; a patron
Example
The anonymous benefactor donated millions to the hospital.
匿名の寄付者は病院に何百万も寄付しました。
C1 noun /ˈbʊzəm/

bosom

胸
Meaning
the human chest, especially a woman’s breast; also used metaphorically to refer to closeness or intimacy
Example
She kept the secret close to her bosom.
彼女は秘密を胸にしまっておいた。
C1 verb /ˈbʌŋɡəl/

bungle

台無しにする
Meaning
To carry out a task clumsily or incompetently.
Example
He bungled the presentation and confused the audience.
彼はプレゼンテーションを台無しにし、聴衆を混乱させました。
C1 noun /bɪˈtreɪər/

Betrayer

裏切り者; 不忠者
Meaning
a person who betrays someone or something; one who is disloyal
Example
The betrayer was exposed and faced severe consequences.
裏切り者は暴露され、厳しい結果に直面しました。
C1 verb /bɪˈmoʊn/

bemoan

嘆く
Meaning
To express discontent or sorrow over something.
Example
Critics bemoaned the lack of diversity in the film.
批評家たちは映画の多様性の欠如を嘆いた。
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 /ˈbjuːɡəl/

Bugle

バグル
Meaning
a brass musical instrument similar to a trumpet but without valves, used especially for military calls
Example
The soldier played the bugle to signal the start of the ceremony.
兵士は式典の開始を合図するためにバグルを吹いた
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。