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C1 adjective /ˌæbəˈrɪdʒənəl/

aboriginal

先住民
Meaning
Relating to the original inhabitants of a region.
Example
The museum has a large collection of aboriginal art.
博物館には先住民のアートの大きなコレクションがあります。
C1 noun /əˈlɒt.mənt/

allotment

割り当て、配分
Meaning
The distribution or allocation of something, especially resources or portions.
Example
Each department received an allotment of resources.
各部門はリソースの割り当てを受け取りました。
C1 adjective /pəˈleɪ.ʃəl/

palatial

宮殿のような
Meaning
resembling a palace in being spacious and splendid
Example
They stayed in a palatial hotel during their vacation.
彼らは休暇中に宮殿のようなホテルに宿泊しました。
C1 adjective, noun /əbˈzɔːrbənt/

absorbent

吸収性のある
Meaning
able to soak up liquid, moisture, or energy easily; a material or substance that absorbs
Example
This towel is highly absorbent and dries quickly.
このタオルはとても吸収性が高く、すぐ乾きます。
C1 adjective /ˈstɪndʒi/

stingy

けち
Meaning
unwilling to spend or give; miserly
Example
He is too stingy to buy a gift for his friend.
彼は友達へのプレゼントを買うにはあまりにけちだ。
C1 noun /ˈstɔːrhaʊs/

storehouse

倉庫
Meaning
A place where goods, supplies, or valuables are stored; a repository
Example
The warehouse acted as a storehouse for all the imported goods.
その倉庫はすべての輸入品のストアハウスとして機能していた。
C1 adjective /ˌsɛlf ɪˈfeɪsɪŋ/

self-effacing

控えめな
Meaning
not drawing attention to oneself; modest
Example
Despite his success, he remained self-effacing and humble.
成功にもかかわらず、彼は控えめで謙虚なままでした。
C1 verb /ɪˈroʊd/

erode

浸食
Meaning
to gradually wear away or destroy by natural forces such as water, wind, or chemical action
Example
The coastline has begun to erode due to constant waves.
海岸線は継続的な波のために浸食し始めた。
C1 verb /daʊs/

douse

消す / 注ぐ
Meaning
to pour liquid over; to extinguish a fire or light
Example
Firefighters doused the flames with water.
消防士たちは水で炎を消しました。
C1 noun /ˈplæn.teɪn ˈflaʊ.ər/

Plantain flower

プランテンの花
Meaning
The flower bud of a banana plant, used as a vegetable in cooking
Example
We cooked plantain flower curry for dinner.
私たちは夕食にプランテンの花のカレーを作りました。
C1 noun /ˌdɛsɪˈmeɪʃən/

decimation

壊滅
Meaning
The act of destroying or killing a large proportion of something.
Example
The decimation of the city left thousands homeless.
都市の壊滅により、何千人もの人々が家を失った。
C1 adjective /koʊˈɪnsɪdənt/

coincident

同時
Meaning
Occurring at the same time; occupying the same position in space or time.
Example
The festival was coincident with the national holiday.
フェスティバルは国民の祝日と同時でした。
C1 noun /sɪlt/

silt

シルト
Meaning
Fine sand, clay, or other material carried by running water and deposited as a sediment.
Example
The river deposited layers of silt along its banks.
川はその岸にシルトの層を堆積させた。
C1 noun /ˈflæt.ər.i/

Flattery

お世辞
Meaning
excessive and insincere praise, given especially to further one's own interests
Example
His constant flattery made everyone suspicious of his true motives.
彼の絶え間ないお世辞は、皆が彼の本当の意図を疑わせることになった。
C1 verb /dɪˈsɛnt/

dissent

Meaning
To hold or express opinions that are different from those officially accepted.
Example
Several members dissented from the majority decision.
C1 noun /ˈsɪlk.wɜːrm/

Silk-worm

かいこ
Meaning
the caterpillar of a moth that produces silk fibers used to make silk fabric
Example
Silkworms feed on mulberry leaves to produce silk.
カイコは桑の葉を食べて、絹を生産します。
C1 noun /ˈdel.ɪ.kə.si/

Delicacy

繊細さ; 高級な料理;
Meaning
fineness of texture or structure; a choice or expensive food; sensitivity in handling
Example
The chef prepared a local delicacy that was famous throughout the region.
シェフは地域全体で有名な地元のデリカシーを準備しました。
C1 noun ˌmɪsˈmænɪdʒmənt

mismanagement

不適切な管理
Meaning
Bad or careless management of something.
Example
Mismanagement of plastic waste worsens pollution.
プラスチックごみの不適切な管理が汚染を悪化させます。
C1 noun, verb /dɪsˈɑːnər/

dishonor

Meaning
a state of shame or loss of respect; to bring shame upon someone or something
Example
The soldier felt he had brought dishonor to his family.
C1 noun /ˈfɔː.nə/

fauna

特定の地域の動物の生命
Meaning
The animal life of a particular region, habitat, or geological period.
Example
The fauna of the African savannah includes lions and elephants.
アフリカのサバンナの動物はライオンと象を含みます。
C1 adjective /əˈlʊr.ɪŋ/

Alluring

魅力的で誘惑的; 魅力的な
Meaning
attractive and tempting; fascinating
Example
The alluring fragrance of roses filled the garden.
バラの魅力的な香りが庭を満たしました。
C1 noun /ˈneb.jʊ.lə/

nebula

星雲
Meaning
A cloud of gas and dust in outer space, sometimes visible in the night sky.
Example
The Orion Nebula is one of the brightest in the sky.
オリオン星雲は空で最も明るいものの一つです。
C1 verb /ˈmjuːteɪt/

mutate

突然変異する
Meaning
To change or cause to change in form, nature, or character.
Example
The virus can mutate into a more dangerous strain.
ウイルスはより危険な株にミュートすることができます。
C1 noun /ɔːˈtɒmətən/

automaton

自動機械
Meaning
A machine that works automatically; also refers to a person who behaves like a machine, without thinking.
Example
He worked like an automaton, without showing any emotion.
彼は感情を見せずにオートマトンのように働いていました。
C1 noun /twɪt/

Twit

馬鹿; からかう
Meaning
a silly or foolish person; to tease or make fun of someone
Example
Don't be such a twit and listen carefully.
そんな馬鹿なことを言わないで、よく聞いて。
C1 verb /rɪˈtɔːrt/

retort

反論
Meaning
To reply quickly or sharply, often in a witty or angry manner.
Example
He quickly retorted that he was not to blame.
彼は素早く反論した、彼が悪くないと言った。
C1 noun /ˈpraɪ.mər/ (US), /ˈprɪm.ər/ (UK)

primer

入門書, 下塗り
Meaning
A basic introductory book or a substance used to prepare a surface for painting.
Example
He read a primer on programming before starting his course.
彼はコースを始める前にプログラミングの入門書を読みました。
C1 adjective /ˈpjuː.ni/

puny

弱い
Meaning
Small, weak, or insignificant.
Example
He felt puny compared to his stronger classmates.
彼は自分の強いクラスメートと比較して、自分が弱いと感じていました。
C1 adjective eɪˈsɪŋ.krə.nəs

asynchronous

非同期の
Meaning
Of or requiring a form of computer control timing protocol in which a specific operation begins upon receipt of an indication that the preceding operation has been completed.
Example
Asynchronous courses allow students to learn at their own pace.
非同期コースは学生が自分のペースで学べるようにします。
C1 noun /ˈkælkjʊləs/

calculus

微積分
Meaning
A branch of mathematics concerned with rates of change and accumulation; also a hard mineral deposit in the body such as on teeth.
Example
Calculus is essential for advanced studies in physics and engineering.
微積分は物理学と工学の高度な研究に不可欠です。
C1 noun /ɪkˈspæns/

expanse

広大な地域
Meaning
a wide, open area of land, sea, or sky
Example
The desert is a vast expanse of sand and rock.
砂漠は広大な砂と岩の地域です。
C1 noun /klaʊt/

clout

影響力
Meaning
influence or power, especially in politics or business
Example
The businessman has a lot of political clout.
そのビジネスマンは政治的な影響力を持っています。
C1 verb /ɪˈdʒɛkt/

eject

追い出す
Meaning
to force someone or something out, usually from a place or position
Example
The referee had to eject the player for unsportsmanlike behavior.
レフェリーはアンスポーツマンライクな行為で選手を追い出さなければならなかった。
C1 noun /dɪˈsɜːn.mənt/

discernment

洞察力
Meaning
The ability to judge well or understand something correctly; keen insight.
Example
His discernment in business decisions made him successful.
彼のビジネスの決定における洞察力は彼を成功させた。
C1 noun /vəˈlɒs.ɪ.ti/

velocity

速度
Meaning
Speed or acceleration, the rate of movement of any object or vehicle.
Example
High velocity trains reduce travel time significantly.
高速鉄道は移動時間を大幅に短縮します。
C1 verb /ˈpɛdəl/

peddle

売る
Meaning
To sell goods, often by going from place to place; sometimes used negatively to mean promoting an idea or product in a pushy way.
Example
Street vendors peddle handmade jewelry to tourists.
ストリートの販売員は観光客に手作りのジュエリーを売っている。
C1 noun /ɪkˈstræv.ə.ɡəns/

Extravagance

過度の支出; 無駄遣い
Meaning
lack of restraint in spending money; excessive expense
Example
The wedding celebration was criticized for its unnecessary extravagance.
結婚式の祝賀は、その不必要な贅沢で批判されました。
C1 noun /kəˈmændər ɪn tʃiːf/

Commander-in-chief

最高司令官
Meaning
the supreme leader of a nation's armed forces
Example
The president serves as the commander-in-chief of the military.
大統領は軍隊の最高司令官として務めています。
C1 verb /ˈθiːəraɪz/

theorize

理論化する
Meaning
To form a theory or set of ideas to explain something.
Example
Scientists often theorize about the origins of the universe.
科学者たちはしばしば宇宙の起源について理論化します。
C1 noun /ˈsɪndɪkət/

syndicate

シンジケート
Meaning
A group of individuals or organizations combined to promote a common interest or carry out a business venture.
Example
A syndicate of investors bought the struggling company.
投資家のシンジケートが困難な会社を買収しました。
C1 noun /ˈfɔːrmən/

foreman

労働者のグループを担当する人、特に工場や建設現場で
Meaning
a person in charge of a group of workers, especially in a factory or construction site
Example
The foreman supervised the workers on the construction site.
フォアマンは建設現場で作業員を監督しました。
C1 noun /ˈwɪzərdri/

wizardry

魔法の技術
Meaning
The art or practice of magic; great skill or expertise in something.
Example
The programmer's wizardry amazed everyone in the room.
プログラマーの魔法の技術は部屋の中の全員を驚かせました。
C1 noun /ˈfoʊ.kəs ˈtræk.ɪŋ/

focus tracking

フォーカス追跡
Meaning
A technique of monitoring and maintaining attention on specific tasks or goals.
Example
Proper focus tracking improves productivity.
適切なフォーカス追跡は生産性を向上させます。
C1 adjective /miːk/

Meek

おとなしくて従順; 謙虚; 忍耐強い
Meaning
gentle and submissive; humble; patient
Example
Despite his power, he remained meek and humble.
力があっても、彼は謙虚で優しいままでした。
C1 noun /mɜːrθ/

mirth

喜び
Meaning
Great joy, amusement, or laughter.
Example
The festival was full of mirth and laughter.
フェスティバルは喜びと笑いでいっぱいでした。
C1 adjective /diːˈsɛntrəlaɪzd/

decentralized

分散型
Meaning
Controlled by several local offices or authorities rather than one single one.
Example
The decentralized system allowed for more control at local levels.
分散型システムは、ローカルレベルでのより多くの制御を可能にしました。
C1 noun /ˈlɛk.sɪ.kɒn/

lexicon

語彙
Meaning
The vocabulary of a person, language, or branch of knowledge; a collection of words and terms.
Example
A translator must have a vast lexicon of both languages.
翻訳者は両方の言語の広大な語彙を持っていなければならない。
C1 adjective /ˈpɑːndərəs/

ponderous

重くて遅い
Meaning
slow and clumsy because of great weight; dull and labored
Example
The ponderous lecture made it hard for students to stay awake.
重くて遅い講義は学生たちが目を覚ましているのを難しくした。
C1 noun /ˈʌp.ʃɒt/

Upshot

結果; 結論
Meaning
the final result or outcome of a series of events; conclusion
Example
The upshot of the meeting was a decision to postpone the project.
会議の結果はプロジェクトの延期を決定することでした。
C1 noun/adjective /ˈbæstərd/

bastard

私生児
Meaning
a child born to unmarried parents (offensive); also used informally as an insult or to describe something unpleasant
Example
He called him a bastard in anger.
彼は怒りで彼をバスタードと呼んだ。
C1 noun /ˈʌndərˌstʌdi/

understudy

アンダースタディ
Meaning
An actor who learns another's role to act as a replacement if needed.
Example
The understudy performed when the lead actor fell ill.
主役の俳優が病気になったとき、アンダースタディが演じました。
C1 verb /ˈdæmpən/

dampen

湿らせる, 和らげる
Meaning
to make something slightly wet; to make something less strong, active, or intense
Example
The rain dampened the excitement of the outdoor concert.
雨が屋外コンサートの興奮を和らげました。
C1 noun /ˈsɑːri/

Saree

サリー
Meaning
a garment consisting of a length of cotton or silk elaborately draped around the body, traditionally worn by women from South Asia
Example
She looked elegant in her red silk saree at the festival.
彼女は祭りで赤い絹のサリーを着てとてもエレガントに見えました。
C1 verb /ɪmˈploʊd/

implode

内爆
Meaning
To collapse or burst inward violently.
Example
The old building imploded during the demolition.
古い建物は解体中に内向きに崩壊しました。
C1 noun ˈæk.si.əm

axiom

公理
Meaning
A statement or principle that is considered true and does not require proof.
Example
Actions speak louder than words is a well-known axiom.
行動は言葉よりも雄弁である、それはよく知られた公理です。
C1 verb /ˈslɪðər/

slither

滑る
Meaning
to move smoothly over a surface with a twisting, sliding motion, like a snake
Example
The snake slithered through the grass.
ヘビは草の中を滑って進んだ。
C1 noun /ɪnˈsɒm.ni.ə/

Insomnia

不眠症
Meaning
habitual sleeplessness; inability to sleep; the condition of being unable to sleep
Example
Her chronic insomnia made it difficult for her to concentrate during work hours.
彼女の慢性的な不眠症は、仕事中に集中するのを難しくさせた。
C1 noun /weɪ/

Whey

ホエイ
Meaning
the watery part of milk that separates from the curds when making cheese
Example
Whey protein is popular among athletes and bodybuilders.
ホエイプロテインはアスリートやボディビルダーの間で人気があります。
C1 adjective /ɪˈspeʃəl/

especial

特別な
Meaning
Particularly remarkable or significant; distinguished from others
Example
This is an especial opportunity you should not miss.
これは見逃せない特別な機会です。
C1 noun /ˈdʒiː.nəs/

genus

属
Meaning
a category in biological classification ranking above species and below family
Example
The tiger belongs to the genus Panthera.
トラはパンサー属に属します。
C1 adjective /ˈsnɒbɪʃ/

snobbish

高慢
Meaning
having or showing the attitude of people who think they are better than others
Example
She seemed snobbish because she avoided talking to the waiters.
彼女はウェイターと話すのを避けたので、高慢に見えました。
C1 verb /ˈlaɪ.kən/

liken

例える
Meaning
to compare one thing to another, often in a figurative way
Example
He likened her voice to sweet music.
彼は彼女の声を甘い音楽に例えました。
C1 noun /ˈvaɪəˌleɪtər/

violator

違反者
Meaning
A person who breaks or disregards a law, rule, or agreement.
Example
The police caught the traffic violator at the intersection.
警察は交差点で交通違反者を捕まえました。
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 /ɪnˈvɜːrt/

invert

逆さにする
Meaning
To turn something upside down or in the opposite position, order, or direction.
Example
He inverted the glass to let the water drain out.
彼は水が流れ出るようにグラスを逆さまにしました。
C1 verb /ˈdʒenərəlaɪz/

generalize

一般化する
Meaning
To make a broad statement by inferring from specific cases.
Example
It is wrong to generalize based on a few experiences.
いくつかの経験に基づいて一般化するのは間違っています。
C1 noun /ˈkɑːrtrɪdʒ/

cartridge

カートリッジ
Meaning
A container holding a substance or device, such as ink for printers or bullets for firearms.
Example
The printer stopped working because the ink cartridge was empty.
プリンターはインクカートリッジが空になったため、動作を停止しました。
C1 verb /dɪˈspɛl/

dispel

解消する
Meaning
to make a doubt, feeling, or belief disappear
Example
The teacher's explanation dispelled the students' confusion.
先生の説明は学生たちの混乱を解消しました。
C1 adjective /sɪmˈplɪstɪk/

simplistic

過度に単純化された
Meaning
treating complex issues as if they were much simpler than they really are
Example
His explanation was too simplistic and ignored key details.
彼の説明は過度に単純化されており、重要な詳細を無視していました。
C1 verb dɪˈlɪnieɪt

delineate

詳細に描写する
Meaning
To describe or portray something precisely
Example
The artist delineated the scene in intricate detail.
アーティストはシーンを複雑な詳細で描写しました。
C1 noun/verb /ˈsuː.tʃər/

suture

縫合
Meaning
A stitch or row of stitches holding together the edges of a wound or surgical incision.
Example
The doctor used a suture to close the wound.
医者は傷を閉じるために縫合糸を使いました。
C1 noun /fəˈrɒs.ə.ti/

ferocity

凶暴さ, 暴力, 強さ
Meaning
The state or quality of being ferocious; extreme fierceness or violence.
Example
The storm's ferocity was devastating.
嵐の凶暴さは壊滅的でした。
C1 adjective /ˈpoʊləraɪzd/

polarized

分極された
Meaning
divided into two sharply contrasting groups or opinions
Example
The debate polarized the community on the issue of climate change.
その議論は気候変動問題についてコミュニティを分裂させました。
C1 adjective /ˈtɛmpərət/

temperate

温和な
Meaning
showing moderation or self-restraint; also describing mild climate.
Example
He is known for his temperate behavior even in stressful situations.
彼はストレスの多い状況でも温和な行動で知られています。
C1 noun, verb /pliːt/

pleat

プリーツ
Meaning
a fold in fabric made by doubling the material back upon itself
Example
She added a pleat to the skirt for extra volume.
彼女はスカートにボリュームを加えるためにプリーツを入れました。
C1 noun /ˈjeloʊ oʊliˈændər/

Yellow oleander

黄色のオレアンダー
Meaning
a tropical flowering shrub with bright yellow flowers; also known as lucky nut
Example
The yellow oleander blooms throughout the year in warm climates.
黄色のオレアンダーは暖かい気候で一年中花を咲かせます。
C1 noun /moʊt/

moat

堀
Meaning
A deep, wide ditch surrounding a castle or town, often filled with water, for defense.
Example
The castle was protected by a wide moat filled with water.
城は水で満たされた広い堀によって守られていました。
C1 noun /ˈskaʊndrəl/

scoundrel

悪党
Meaning
a dishonest or unscrupulous person; a villain
Example
That scoundrel cheated the old man out of his savings.
その悪党は老人から貯金を騙し取った。
C1 verb /ˈɡlædən/

gladden

喜ばせる
Meaning
to make someone happy or bring joy
Example
The news of her recovery gladdened everyone.
彼女の回復のニュースは皆を喜ばせました。
C1 verb /ˈpændər/

pander

おべっかを使う, ごますりする
Meaning
to indulge or exploit the weaknesses, desires, or immoral tendencies of others
Example
The politician was accused of pandering to voters' fears.
その政治家は有権者の恐怖におもねっていると非難された。
C1 noun /ɪnˈdaɪtmənt/

indictment

起訴状
Meaning
a formal charge or accusation of a serious crime
Example
The indictment accused the company of multiple violations.
起訴状は、会社に対する複数の違反を告発しました。
C1 adjective /ˌæn.ɪkˈdoʊ.t̬əl/

anecdotal

事実や調査ではなく、個人的な話に基づく、逸話的な
Meaning
Based on personal accounts rather than facts or research; characterized by anecdotes.
Example
The book was filled with anecdotal evidence rather than data.
その本はデータではなく、逸話的証拠で満たされていました。
C1 noun /ˈpɛnɪtəns/

penitence

懺悔
Meaning
The action or feeling of showing sorrow and regret for having done wrong.
Example
His eyes were full of penitence after realizing his mistake.
自分の間違いに気づいた後、彼の目は懺悔に満ちていた。
C1 verb /wiːn/

wean

Meaning
To gradually stop a child or animal from breastfeeding; to detach from a habit.
Example
Parents often wean their babies around six months old.
C1 noun ˌriːˈstrʌk.tʃər.ɪŋ

restructuring

再構築
Meaning
The action of organizing something differently.
Example
The company underwent restructuring to improve efficiency.
会社は効率を高めるために再構築を行った。
C1 adverb spɒnˈteɪnɪəsli

spontaneously

自発的に
Meaning
In a spontaneous way; naturally and without planning or external cause.
Example
Children learn spontaneously through peer interactions.
子供たちは仲間とのやり取りを通じて自然に学びます。
C1 noun /ˌrɛstɪˈtjuːʃən/

restitution

賠償
Meaning
The act of restoring something to its rightful owner or compensating for loss
Example
The court ordered restitution to the victims of the fraud.
裁判所は詐欺の被害者に賠償を命じました。
C1 adjective /rɪˈflek.sɪv/

Reflexive

反射的; 内省的
Meaning
directed back on itself; showing deep thought about oneself
Example
She became more reflexive about her behavior after the feedback.
フィードバックの後、彼女は自分の行動についてもっと反省的になりました。
C1 verb /ˈfɜːrmɛnt/

ferment

化学的なプロセスを経て、糖分がアルコールや酸に変換されること; 変化を促進または引き起こすこと
Meaning
to undergo a chemical process where sugars are converted to alcohol or acid; to incite or stir up change
Example
The grapes are left to ferment for several weeks.
ぶどうは数週間発酵させられます。
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 noun kəmˈpleɪ.sən.si

complacency

自己満足
Meaning
Excessive self-satisfaction with one's achievements that can hinder progress.
Example
His complacency led to a decline in his performance.
彼の自己満足は彼のパフォーマンスの低下を招いた。
C1 verb /ˈveɪpəraɪz/

vaporize

蒸発させる
Meaning
to turn into vapor or gas
Example
The heat of the sun can vaporize water from the surface.
太陽の熱は水を表面から蒸発させることができます。
C1 adjective /kɪˈnɛtɪk/

kinetic

運動エネルギー
Meaning
Relating to or resulting from motion.
Example
Kinetic energy increases as the object moves faster.
物体が速く動くとき、運動エネルギーは増加します。
C1 verb /dɪˈfeɪs/

deface

傷つける
Meaning
to spoil the surface or appearance of something, especially by writing or drawing on it
Example
The vandals defaced the wall with graffiti.
ヴァンダルたちはグラフィティで壁を傷つけました。
C1 adjective /ˈhæɡ.ərd/

Haggard

疲れ果てて病気のように見える、特に疲労、心配、または苦しみから
Meaning
looking exhausted and unwell, especially from fatigue, worry, or suffering
Example
After working three nights without sleep, he looked haggard.
三晩寝ずに働いた後、彼は疲れ果てて見えた。
C1 noun /ˌmɪsˈtrʌst/

Mistrust

不信
Meaning
Lack of trust; suspicion or doubt about someone or something
Example
There was deep mistrust between the two political parties.
二つの政治的政党の間に深い不信があった。
C1 verb /ˈtræŋ.kwɪ.laɪz/

tranquilize

鎮静する
Meaning
to make someone or something calm or less anxious, often by using drugs
Example
The veterinarian had to tranquilize the tiger before moving it.
獣医は虎を動かす前に鎮静する必要があった。
C1 adverb /ˈnoʊɪŋli/

knowingly

故意に
Meaning
in a way that shows you are aware of something; intentionally
Example
She knowingly kept the secret from her friends.
彼女は故意に友達に秘密を隠しました。
C1 noun dəˌmɛstɪˈkeɪʃən

domestication

家畜化
Meaning
The process of taming an animal and keeping it as a pet or for farm produce.
Example
Domestication of animals has been crucial for human survival.
動物の家畜化は人間の生存にとって重要だった。
C1 noun ˈdɪskɔrd

discord

不和
Meaning
Disagreement or conflict between people or ideas.
Example
Discord among people disrupts societal stability.
人々の間の不和は社会の安定を乱す。
C1 adjective /tɜːrs/

terse

簡潔
Meaning
brief and to the point; sparing in the use of words
Example
His reply was terse and ended the conversation quickly.
彼の返答は簡潔で、すぐに会話を終わらせた。
C1 adjective /ˈtrɛtʃərəs/

treacherous

裏切りの
Meaning
Dangerously unstable or deceptive; likely to betray trust.
Example
The treacherous road made driving difficult.
裏切りの道路は運転を難しくしました。
C1 noun /ˈkrɛvɪs/

crevice

亀裂
Meaning
a narrow crack or opening, especially in a rock or wall
Example
The lizard hid in a crevice between the stones.
トカゲは石の間の亀裂に隠れていた。
C1 adjective /oʊˈvɜːrt/

overt

公然
Meaning
Done or shown openly; not hidden or secret.
Example
There was an overt display of hostility between the rivals.
ライバルの間に公然とした敵意の表れがあった。
C1 adjective /ˈpɑːm.pəs/

Pompous

気取った; うぬぼれた; 過度に豪華な
Meaning
showing off; pretentious; overly grand
Example
His pompous attitude annoyed everyone at the meeting.
彼の気取った態度は会議でみんなを苛立たせました。
C1 adjective ʌnˈwɔːr.rən.tɪd

unwarranted

不当な
Meaning
Not justified or necessary; without good reason.
Example
His anger toward the staff was completely unwarranted.
スタッフに対する彼の怒りは完全に不当でした。
C1 adjective /ˈpɛnsɪv/

pensive

物思いにふけった
Meaning
Engaged in deep or serious thought.
Example
She looked pensive as she stared out of the window.
彼女は窓の外を見ながら物思いにふけっているようだった。
C1 adverb /əˈbrɛst/

abreast

並んで
Meaning
side by side and facing the same direction; informed about something
Example
The soldiers marched two abreast down the street.
兵士たちは通りを二人並んで行進した。
C1 adjective /ɪnˈkrɛdjələs/

incredulous

Meaning
unwilling or unable to believe something
Example
He gave her an incredulous look when she claimed she could fly.
C1 adjective /ˌkætəˈɡɒrɪkəl/

categorical

カテゴリー的
Meaning
Absolute and without exception; expressed clearly and directly.
Example
She gave a categorical denial of the allegations.
彼女はその告発に対してカテゴリー的な否定をした。
C1 adjective /ˈsɪn.tɪ.leɪ.tɪŋ/

scintillating

きらめく
Meaning
brilliantly clever, exciting, or sparkling
Example
Her scintillating conversation kept everyone entertained.
彼女のきらめく会話は皆を楽しませた。
C1 adjective, adverb (informal, vulgar) /ˈfʌkɪŋ/

fucking

クソ (強調のための卑猥な言葉)
Meaning
used for emphasis, often expressing anger or frustration (vulgar slang)
Example
It was a fucking disaster!
それはクソみたいな災害だった！
C1 adjective /ˈræmpənt/

rampant

蔓延する
Meaning
existing or spreading unchecked, often in an undesirable way
Example
Corruption was rampant in the city administration.
腐敗は市の行政で蔓延していた。
C1 adjective /maɪˈkroʊ.bi.əl/

microbial

微生物の
Meaning
Related to bacteria, fungi, and other microscopic organisms.
Example
Microbial activity in the soil improves fertility.
土壌中の微生物活動は肥沃度を改善します。
C1 verb /rɪˈnaʊns/

renounce

放棄する
Meaning
to formally declare rejection of something, such as a claim, belief, or way of life
Example
She renounced her citizenship to move abroad permanently.
彼女は永住権を得るために市民権を放棄しました。
C1 verb /skɪmp/

skimp

ケチる
Meaning
to use less of something than is necessary in order to save money or effort
Example
Don’t skimp on quality when buying a new laptop.
新しいノートパソコンを買うときは、品質をケチらないでください。
C1 adjective ʌnˈjiːl.dɪŋ

unyielding

揺るぎないまたは堅い
Meaning
Not easily broken or giving in to pressure.
Example
Her unyielding determination helped her overcome all challenges.
彼女の揺るぎない決意が彼女をすべての挑戦を乗り越えさせました。
C1 noun/verb /skɜːrdʒ/

scourge

Meaning
A source of great pain or punishment; to whip or inflict suffering on someone.
Example
Disease and poverty remain a scourge in many regions.
C1 adjective /ˈdɔːr.mənt/

Dormant

非アクティブ; 眠っている; 一時的に保留された; 現在アクティブではない
Meaning
inactive; sleeping; temporarily suspended; not currently active
Example
The volcano has been dormant for over a century.
火山は1世紀以上の間休眠状態です。
C1 noun /kənˈsiːt/

conceit

虚栄心
Meaning
excessive pride in oneself; vanity
Example
His conceit made him unpopular among his colleagues.
彼の虚栄心は彼を同僚の中で不人気にした。
C1 adjective /ˈstʌm.pi/

Stumpy

短くて太い
Meaning
short and thick; having a short, thick appearance
Example
The stumpy little dog wagged its tail enthusiastically.
その短くて太い小さな犬は、興奮して尾を振っていました。