crustacean
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C1 noun /krʌˈsteɪʃən/

crustacean

硬い殻を持つ水生動物
Meaning
an aquatic animal with a hard shell, such as crabs, lobsters, and shrimps
Example
Crabs and lobsters are well-known crustaceans.
カニやロブスターはよく知られている甲殻類です。
C1 verb/noun /ˈkrɒn.ɪ.kəl/

chronicle

出来事を発生した順番で記録する
Meaning
To record events in the order in which they happened; a written record of historical events.
Example
She decided to chronicle her journey through a blog.
彼女はブログを通じて彼女の旅を記録することに決めました。
C1 adjective /ˈkɔːʃənˌɛri/

cautionary

警告的な
Meaning
serving as a warning; intended to prevent problems or mistakes by giving advice or examples
Example
The report offers a cautionary message about unchecked spending.
その報告書は無計画な支出について警告的なメッセージを示している。
C1 adjective /kənˈkluː.sɪv/

Conclusive

決定的な; 最終的な; 問題を完全に解決する
Meaning
final; decisive; settling a matter completely
Example
The evidence was conclusive and left no room for doubt.
その証拠は決定的であり、疑う余地を残さなかった。
C1 noun /kənˈsɜːvəˌtɔːri/

conservatory

温室 / 音楽と芸術の学校
Meaning
A greenhouse for growing plants or a school for music and the arts.
Example
They grew exotic plants in the conservatory.
彼らは温室でエキゾチックな植物を育てていました。
C1 adjective /ˈkrɛdɪtəbl/

creditable

称賛に値する
Meaning
Deserving praise or acknowledgment, though not necessarily outstanding.
Example
She made a creditable effort in completing the project on time.
彼女は時間通りにプロジェクトを完了するために称賛に値する努力をしました。
C1 adjective /kɜːrt/

curt

ぶっきらぼう
Meaning
Rudely brief in speech or manner.
Example
His curt reply made everyone uncomfortable.
彼のぶっきらぼうな返答は、皆を不快にさせた。
C1 noun kənˈvɜː.dʒəns

convergence

収束
Meaning
The process of coming together from different directions to meet at a common point; unification or integration.
Example
The convergence of technologies is revolutionizing industries.
技術の収束が産業を革命的に変革しています。
C1 noun /ˌkɒrəˈneɪʃən/

coronation

戴冠式
Meaning
the act or ceremony of crowning a sovereign or monarch
Example
The coronation of the new king was attended by thousands of people.
新しい王の戴冠式には何千人もの人々が参加しました。
C1 adjective /kəmˈpensətɔːri/

compensatory

補償的
Meaning
serving to make up for a loss, damage, or injury
Example
The court awarded him compensatory damages.
裁判所は彼に補償的損害賠償を授与しました。
C1 noun /ˈkɑːmənˌwɛlθ/

commonwealth

コモンウェルス
Meaning
an independent community or state, especially one founded for the common good; also an association of nations
Example
Australia is a member of the Commonwealth of Nations.
オーストラリアはコモンウェルス加盟国です。
C1 noun /ˈkeɪ.sɪŋ/

Casing

カバー; 外殻
Meaning
a cover or shell that protects or encloses something
Example
The mechanic removed the engine casing to examine the internal parts.
整備士はエンジンの外殻を取り外して内部の部品を調べました。
C1 noun /kənˈstɪtʃuənsi/

constituency

選挙区
Meaning
A geographical area whose residents elect a representative to a legislative body.
Example
She campaigned tirelessly across her constituency.
彼女は選挙区で疲れ知らずに選挙運動を行いました。
C1 noun /ˈkæzəm/

chasm

裂け目 / 大きな違い
Meaning
a deep fissure in the earth's surface or a wide difference between people or ideas
Example
There was a great chasm between the two political parties.
二つの政治的党派の間には大きな裂け目がありました。
C1 noun /ˈkaʊntərˌpɔɪnt/

counterpoint

対比点
Meaning
an argument, idea, or theme contrasting with another; also a musical term for independent melody
Example
Her calm attitude was a counterpoint to his anger.
彼女の落ち着いた態度は彼の怒りの対比点だった。
C1 verb /kənˈfleɪt/

conflate

統合する / 混同する
Meaning
To combine two or more things, often confusingly, into one.
Example
The article tends to conflate facts with opinions.
その記事は事実と意見を混同しがちです。
C1 adjective ˈkɒn.və.luː.tɪd

convoluted

複雑な
Meaning
Extremely complex and difficult to follow; twisted or intricate.
Example
His argument was so convoluted that no one understood it.
彼の議論は非常に複雑で、誰も理解できませんでした。
C1 noun ˈkɑːr.bən ˌsiː.kwəˈstreɪ.ʃən

carbon sequestration

炭素の固定化と長期貯蔵
Meaning
The process of capture and long-term storage of atmospheric carbon dioxide to mitigate or defer global warming.
Example
Forests play a key role in carbon sequestration.
森林は炭素の固定化において重要な役割を果たします。
C1 adjective, noun /ˈkɑːr.dɪ.nəl/

cardinal

基本的な / 重要な
Meaning
As an adjective: of prime importance; as a noun: a high-ranking Catholic clergyman or a type of bird.
Example
Honesty is a cardinal virtue in life.
正直は人生における重要な美徳です。
C1 noun /kəˈlɪɡrəfi/

calligraphy

美しく装飾的な手書きの芸術
Meaning
The art of beautiful and decorative handwriting.
Example
She took a course to improve her calligraphy skills.
彼女はカリグラフィーの技術を向上させるためにコースを受講しました。
C1 noun /ˌkɒnfləˈɡreɪʃən/

conflagaration

綴り間違い（'conflagration'の）
Meaning
This is a common misspelling of 'conflagration', which means a large, destructive fire.
Example
The term 'conflagaration' is often incorrectly used instead of 'conflagration'.
'Conflagaration'という言葉は、しばしば'conflagration'の代わりに誤って使われます。
C1 adjective /kəmˈplɪsɪt/

complicit

共犯者 (犯罪で)
Meaning
involved with others in an illegal activity or wrongdoing
Example
He was found complicit in the crime.
彼は犯罪で共犯者として見つかりました。
C1 adjective /ˈtʃɪə.ləs/

Cheerless

憂鬱な; 陰気な; 悲しい; 喜びのない
Meaning
lacking happiness or comfort; gloomy; depressing; without cheer
Example
The old house looked cheerless and abandoned in the winter rain.
古い家は冬の雨の中で寂しげで放置されているように見えました。
C1 noun /kənˈkʌrəns/

concurrence

一致
Meaning
Agreement or union in action, opinion, or occurrence; simultaneous happening of events.
Example
The project was completed with the concurrence of all departments.
そのプロジェクトはすべての部門の同意のもとで完了しました。
C1 noun /ˈsɪ.nɪk/

Cynic

皮肉屋; 疑い深い人
Meaning
a person who believes that people are motivated purely by self-interest; someone who is skeptical about human nature
Example
The old cynic believed that politicians only cared about getting votes.
その古い皮肉屋は政治家がただ票を得ることにしか関心がないと信じていた。
C1 adjective /ˈkrɪm.zən/

Crimson

深紅
Meaning
a deep purplish-red color
Example
The crimson sunset painted the sky with beautiful shades.
深紅の夕日が美しい色合いで空を染めました。
C1 noun, adjective /ˈsɛntənəri/ or /sɛnˈtɛnəri/

centenary

百年記念
Meaning
The hundredth anniversary of a significant event; relating to a period of 100 years.
Example
The school celebrated its centenary with a grand event.
学校は百年記念を盛大なイベントで祝いました。
C1 noun /kənˈspɪrə.tər/

conspirator

陰謀者
Meaning
a person who secretly plans with others to do something unlawful or harmful
Example
The conspirator was arrested before the plan could be carried out.
陰謀者は計画が実行される前に逮捕された。
C1 noun /kəˈres/

Caress

愛撫
Meaning
a gentle or loving touch
Example
The mother's gentle caress calmed the crying baby.
母親の優しい愛撫が泣いている赤ちゃんを落ち着かせた。
C1 verb /krɪndʒ/

cringe

縮む
Meaning
To shrink back in fear, embarrassment, or discomfort.
Example
She cringed when she remembered her mistake.
彼女は自分の間違いを思い出して、縮んだ。
C1 verb kəˈrɒb.ə.reɪt

corroborate

確認する
Meaning
Confirm or give support to a statement, theory, or finding.
Example
The witness corroborated the defendant's testimony.
証人は被告の証言を裏付けました。
C1 noun /ˈkæpɪˌlɛri/

capillary

毛細血管
Meaning
a very thin blood vessel that connects arteries and veins
Example
Oxygen passes from the blood into tissues through capillaries.
酸素は血液から組織に毛細血管を通って移動します。
C1 noun /kənˈdəʊləns/

condolence

お悔やみ
Meaning
An expression of sympathy, especially on the occasion of death.
Example
She offered her sincere condolence to the grieving family.
彼女は悲しみに沈んでいる家族に心からのお悔やみを伝えました。
C1 noun /ˈkɒnfɪdænt/

confidant

信頼できる友人
Meaning
A person with whom one shares a secret or private matter, trusting them not to repeat it.
Example
She found a true confidant in her childhood friend.
彼女は子供時代の友人の中に本当の信頼できる友人を見つけました。
C1 verb /ˈkrɪstəlaɪz/

crystallize

結晶化する
Meaning
to form crystals; to make an idea or plan clear and definite
Example
Her vague thoughts began to crystallize into a solid plan.
彼女のあいまいな考えは、明確な計画に結晶化し始めた。
C1 noun /ˈkɜːr.i liːvz/

Curry Leaves

カレーの葉
Meaning
aromatic leaves from the curry tree used in South Asian cooking
Example
Fresh curry leaves add authentic flavor to Indian dishes.
新鮮なカレーの葉はインディアン料理に本格的な風味を加えます。
C1 noun /ˈkɔːkəs/

caucus

政治的集会
Meaning
A meeting of members of a political party to select candidates or decide policy.
Example
The party held a caucus to nominate their candidate for president.
党は大統領候補者を指名するために集会を開いた。
C1 noun /kæʃ/

cache

キャッシュ
Meaning
A hidden storage of items or a high-speed memory in computing.
Example
The hikers found a cache of supplies hidden under the rocks.
ハイカーたちは岩の下に隠された物資のキャッシュを見つけました。
C1 noun /krɪˈden.ʃəl/

credential

資格証明書
Meaning
a qualification, achievement, or aspect of a person's background used to indicate suitability for something
Example
She presented her credentials before starting the new job.
彼女は新しい仕事を始める前に資格証明書を提示しました。
C1 noun /krɛst/

crest

頂上
Meaning
the top of a hill, wave, or mountain; a symbol of identity
Example
The hikers reached the crest of the mountain at sunrise.
ハイカーたちは日の出時に山頂に到達しました。
C1 verb /kənˈkɜːr/

concur

同意する
Meaning
To agree with someone or something.
Example
I concur with your opinion on this matter.
私はこの件に関してあなたの意見に同意します。
C1 verb ˌkəʊ.əˈles

coalesce

統合する
Meaning
Come together and form one mass or whole; unite to form one organization or group.
Example
The different theories coalesced into one unified idea.
異なる理論が一つの統一されたアイデアに統合されました。
C1 adjective /ˌkævəˈlɪər/

cavalier

無頓着
Meaning
showing a lack of proper concern; dismissive or offhand
Example
He had a cavalier attitude toward safety regulations.
彼は安全規制に対して無頓着な態度を持っていた。
C1 noun ˌkæl.ɪˈbreɪ.ʃən

calibration

キャリブレーション
Meaning
The action or process of adjusting or determining the accuracy of measuring instruments.
Example
The accuracy of a scale depends on regular calibration.
スケールの精度は定期的なキャリブレーションに依存します。
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 /ˈsɪtrɪk ˈæsɪd/

Citric Acid

クエン酸
Meaning
a natural acid found in citrus fruits, used as a food preservative and flavoring agent
Example
Add a pinch of citric acid to preserve the color of the fruit jam.
果物ジャムの色を保つためにクエン酸をひとつまみ加えてください。
C1 noun kəˈmɛns.mənt

commencement

開始
Meaning
The beginning of something; a ceremony at which degrees or diplomas are conferred on graduating students.
Example
The commencement ceremony marked the start of a new journey.
卒業式は新しい旅の始まりを意味していました。
C1 noun /kənˈsep.ʃən/

Conception

構想; アイデア; 受精
Meaning
the forming of an idea or plan; the fertilization of an ovum by a sperm; the action of conceiving
Example
The conception of this innovative project took several months of brainstorming.
この革新的なプロジェクトの構想には数ヶ月のブレインストーミングが必要でした。
C1 adjective /ˌkɒnvəˈlɛsnt/

convalescent

回復中の、病気や治療から回復している
Meaning
recovering from an illness or medical treatment
Example
The hospital has a special ward for convalescent patients.
病院には回復中の患者のための特別な病棟があります。
C1 verb /kʌl/

cull

Meaning
to select or remove from a larger group, often to reduce numbers
Example
The farmers decided to cull the sick animals from the herd.
C1 noun/verb /kroʊˈʃeɪ/

crochet

Meaning
Needlework made by interlocking loops of thread with a hooked needle; the act of making such items.
Example
She learned how to crochet a scarf for winter.
C1 noun /ˈkɒrənər/

coroner

検死官
Meaning
an official who investigates sudden, violent, or suspicious deaths
Example
The coroner determined the cause of death was natural.
検死官は死因が自然死であると判定しました。
C1 noun /sɛˈseɪʃən/

cessation

停止
Meaning
The fact or process of ending or being brought to an end.
Example
There was a temporary cessation of hostilities.
敵対行為は一時的に停止しました。
C1 noun /ˈkænən/

canon

規範
Meaning
A general law, rule, principle, or collection of sacred books accepted as genuine.
Example
The book is now considered part of the literary canon.
その本は現在、文学の規範の一部と見なされています。
C1 noun /ˌkɒndʒʊˈɡeɪʃən/

conjugation

活用
Meaning
the variation of the form of a verb to indicate tense, person, and number
Example
French verbs have complex conjugations.
フランス語の動詞には複雑な活用形があります。
C1 adjective ˌkɑːr.sɪ.nəˈdʒen.ɪk

carcinogenic

発癌性の
Meaning
Having the potential to cause cancer in living tissue.
Example
Processed meat contains carcinogenic compounds.
加工肉には発癌性の化合物が含まれています。
C1 noun /ˈsɛntɪˌliːtər/

centiliter

Meaning
A metric unit of capacity equal to one hundredth of a liter.
Example
The recipe calls for 20 centiliters of milk.
C1 noun /kənˈsɜːvəˌtɪzəm/

conservatism

保守主義
Meaning
A political or social philosophy promoting traditional institutions and resistance to change.
Example
Conservatism values tradition and gradual development.
保守主義は伝統と徐々に進行する発展を重視します。
C1 noun /ˈkæləs/

callus

皮膚の硬化部分
Meaning
A thickened and hardened part of the skin or soft tissue, especially in an area subjected to friction.
Example
A callus formed on his palm from using tools every day.
毎日道具を使うことで、彼の手のひらにカラスができました。
C1 noun /ˌkɒnfɪˈdɑːnt/

confidante

信頼できる友人
Meaning
A woman with whom one shares a secret or private matter, trusting her not to repeat it.
Example
The queen’s maid became her most trusted confidante.
女王の侍女は最も信頼された友人になった。
C1 adjective /ˈtʃɛk.ərd/

checkered

チェッカード
Meaning
Having a pattern of alternating squares of different colors; also describing a past full of ups and downs or varied experiences.
Example
He had a checkered career with many highs and lows.
彼は多くの浮き沈みを経験したチェッカードなキャリアを持っていた。
C1 adjective /kənˈteɪ.dʒəs/

Contagious

伝染性の; 感染性の
Meaning
likely to spread to and affect others; infectious
Example
Her laughter is contagious and makes everyone smile.
彼女の笑い声は伝染性があり、みんなを笑顔にする。
C1 verb /ˌkaʊntərˈækt/

counteract

反作用
Meaning
to act against something in order to reduce its effect
Example
The medicine helps counteract the side effects of the treatment.
その薬は治療の副作用をカウンターアクトするのに役立ちます。
C1 noun /tʃɪt/

Chit

メモ、控え
Meaning
a short note, typically a brief informal letter; a voucher for a sum owed
Example
She left a chit on the table asking him to call her back.
彼女はテーブルにチットを置いて、彼に戻って電話するように頼んだ。
C1 adverb /ˈkɔːrdiəli/

Cordially

心から
Meaning
in a warm and friendly manner; sincerely
Example
You are cordially invited to our wedding ceremony.
あなたは私たちの結婚式に心から招待されています。
C1 noun /ˌkɒn.təmˈpleɪ.ʃən/

contemplation

深い考察
Meaning
The action of looking thoughtfully at something for a long time; deep reflective thought.
Example
She sat in contemplation before making her decision.
彼女は決断を下す前に深く考察していた。
C1 noun /ˈtʃæriət/

Chariot

戦車
Meaning
an ancient horse-drawn vehicle used in warfare and racing
Example
The warrior rode his chariot into battle with great courage.
戦士はその戦車に乗って勇敢に戦いに挑みました。
C1 adjective /ˌkaʊntərɪnˈtuːɪtɪv/

counterintuitive

直感に反する
Meaning
contrary to what one would intuitively expect
Example
His approach seems counterintuitive but it actually works.
彼のアプローチは直感に反するように見えますが、実際には効果的です。
C1 noun /ˈkæptər/

captor

捕虜監視者
Meaning
a person or group who has captured someone or something
Example
The hostage managed to escape from his captors.
人質はその捕虜監視者から逃げることができました。
C1 noun sɪˈmɛntɪd ɡreɪv

cemented grave

セメントで作られた墓
Meaning
A grave that is constructed with cement for permanence.
Example
The cemented grave of the martyrs was seen near the river.
殉教者のセメントで作られた墓が川の近くで見られました。
C1 adjective /ˈkjʊərəbl/

curable

治療可能な
Meaning
Able to be cured or healed.
Example
The doctor assured her that the disease was curable.
医者はその病気が治療可能だと確信を持って言いました。
C1 verb /ˈkælɪˌbreɪt/

calibrate

Meaning
To adjust or mark something so it can be used accurately; to standardize.
Example
The technician calibrated the machine before starting the experiment.
C1 verb /ˈkætəˌlaɪz/

catalyze

触発する
Meaning
To cause or accelerate a reaction or change.
Example
The new law catalyzed reforms across the sector.
新しい法律は業界全体で改革を促進した。
C1 adjective /koʊˈɜːrsɪv/

coercive

強制的
Meaning
Relating to or using force or threats to make someone do something.
Example
The government faced criticism for adopting coercive measures against protestors.
政府は抗議者に対して強制的な措置を取ったことで批判を受けた。
C1 verb /ˈkɒnskrɪpt/

conscript

徴兵する
Meaning
to force someone into military service
Example
The government conscripted young men during the war.
政府は戦争中に若い男性を徴兵しました。
C1 noun /kɔːr/

corps

軍隊の部門、グループ
Meaning
a branch of the military or a group organized for a specific purpose
Example
He joined the army corps after graduation.
彼は卒業後、軍隊の部門に参加しました。
C1 adjective /ˈkɔːrəl/

choral

合唱に関連する
Meaning
Relating to, written for, or performed by a choir or chorus.
Example
The church hosted a choral performance on Sunday.
教会は日曜日に合唱のパフォーマンスを開催しました。
C1 verb /kənˈtraɪv/

contrive

考案する
Meaning
to plan or devise cleverly or skillfully
Example
She contrived a clever plan to surprise her friends.
彼女は友達を驚かせるために賢い計画を思いついた。
C1 adjective + noun kəˈmendəbəl ɪˈnɪʃətɪvz

commendable initiatives

称賛に値する取り組み
Meaning
Praiseworthy efforts or actions that deserve admiration and approval.
Example
The commendable initiatives aim to raise awareness.
その賞賛に値するイニシアチブは、認識を高めることを目指しています。
C1 noun/verb /ˈkætəpʌlt/

catapult

カタパルト
Meaning
A device for launching objects at high speed; to hurl or launch something suddenly.
Example
The invention catapulted him to international fame.
その発明は彼を国際的な名声へとカタパルトした。
C1 noun /kənˈteɪdʒən/

contagion

感染
Meaning
The communication of disease from one person to another by close contact; also the spread of harmful ideas or behaviors.
Example
Fear spread like a contagion through the crowd.
恐怖は群衆の中で感染のように広がった。
C1 verb /ˈkrɪsən/

christen

洗礼名を付ける
Meaning
to give a name to someone at baptism or to name something officially
Example
They christened the ship after the queen.
彼らは船に女王の名前を付けました。
C1 noun /ˈkɒlərə/

cholera

Meaning
An infectious disease of the small intestine causing severe vomiting and diarrhea.
Example
The village suffered an outbreak of cholera after the flood.
C1 noun /ˈsɛtərə/

cetera

等々
Meaning
Latin for 'the rest' or 'others'; commonly used in the phrase 'et cetera' meaning 'and so on'.
Example
We need to buy pens, paper, notebooks, et cetera.
ペン、紙、ノートなどを買わなければなりません。
C1 noun /kənˈfɔːrməns/

conformance

適合性
Meaning
The act of conforming to a rule, standard, or law.
Example
The product was tested for conformance with safety standards.
製品は安全基準に対する適合性がテストされました。
C1 noun /ˌkɑːr.diˈɒl.ə.dʒɪst/

cardiologist

心臓専門医
Meaning
A doctor specializing in diagnosing and treating heart diseases.
Example
She made an appointment with a cardiologist for her chest pain.
彼女は胸の痛みのために心臓専門医に予約を取りました。
C1 noun /ˈklɛmənsi/

clemency

寛容
Meaning
mercy, leniency, or forgiveness shown towards someone
Example
The judge showed clemency and reduced his sentence.
裁判官は寛容を示し、彼の判決を軽減しました。
C1 adjective /kəmˈpleɪsənt/

complacent

自己満足
Meaning
showing self-satisfaction and a lack of concern about potential dangers or problems
Example
The team grew complacent after a few victories and stopped practicing hard.
チームは数回の勝利の後、自己満足し、練習をやめた。
C1 noun /ˌkæm.əˈrɑː.dɚ.i/

camaraderie

仲間意識, 友情, 連帯感
Meaning
Mutual trust and friendship among people who spend a lot of time together.
Example
The camaraderie among teammates was inspiring.
チームメイト間の仲間意識は感動的でした。
C1 noun kənˈfɔː.mə.ti

conformity

順応、適合、従順
Meaning
Compliance with standards, rules, or laws. Behavior in accordance with socially accepted conventions.
Example
Strict conformity to the rules ensures order in society.
規則の厳格な順守は社会の秩序を保証します。
C1 noun koʊˈhisɪv ˈjunɪts

cohesive units

結束した単位
Meaning
Groups or organizations that work together as unified wholes, with members closely bound together.
Example
Early humans formed cohesive units for survival.
初期の人類は生存のために結束した単位を作った。
C1 verb ˌsɝː.kəmˈvent

circumvent

巧妙に回避する、または障害や規則を回り道する方法を見つける
Meaning
To cleverly avoid or find a way around obstacles or rules.
Example
He tried to circumvent the security system.
彼はセキュリティシステムを回避しようとした。
C1 verb /ˈkaʊər/

cower

恐怖で縮こまる
Meaning
to crouch down in fear
Example
The child cowered behind the sofa during the thunderstorm.
子供は雷の間、ソファの後ろで恐怖で縮こまっていた。
C1 adjective /ˈkoʊpiəs/

copious

豊富
Meaning
abundant in supply or quantity
Example
She took copious notes during the lecture.
彼女は講義中に豊富なノートを取った。
C1 noun /kəmˈpʌl.ʃən/

Compulsion

強迫; 強制;
Meaning
the action or state of forcing or being forced to do something; an irresistible urge to behave in a certain way
Example
He felt a strong compulsion to check his phone every few minutes.
彼は数分おきに電話を確認したいという強迫感を感じていた。
C1 noun ˈkætəlɪst

catalyst

触媒
Meaning
A person or thing that precipitates an event or change.
Example
His speech acted as a catalyst for change in the community.
彼のスピーチはコミュニティの変化の触媒となった。
C1 verb /ˈkɒnsɔːrt/

consort

Meaning
To associate with someone, typically with disapproval; also, a spouse of a reigning monarch.
Example
He was criticized for consorting with criminals.
C1 adjective /ˈkɒn.ɪ.fər.əs/

coniferous

針葉樹に関連する
Meaning
Relating to cone-bearing trees that usually have needle-like leaves and remain green year-round.
Example
Pine trees are coniferous and grow in colder climates.
松の木は針葉樹で、寒冷な気候で育ちます。
C1 verb /ˌkɒm.pɑːtˈmen.təl.aɪz/

compartmentalize

区分けする
Meaning
To divide into sections or categories; to separate things into compartments.
Example
To increase efficiency, he compartmentalized his work tasks.
効率を上げるために、彼は自分の作業を区分けしました。
C1 noun sɜːrˈkeɪdiən ˈrɪðəm

circadian rhythm

サーカディアンリズム
Meaning
The body's natural sleep-wake cycle that occurs within 24 hours
Example
Exposure to natural light regulates the circadian rhythm.
自然光への暴露はサーカディアンリズムを調整します。
C1 noun /ˈtʃæplɪn/

chaplain

チャプレン
Meaning
A member of the clergy attached to a private chapel, institution, hospital, or military unit.
Example
The army chaplain offered prayers before the battle.
軍のチャプレンは戦闘前に祈りを捧げました。
C1 verb /siːd/

cede

譲渡する
Meaning
to give up power, territory, or rights to another
Example
The country ceded territory after losing the war.
その国は戦争に負けた後、領土を譲渡した。
C1 noun ˌkʌl.mɪˈneɪ.ʃən

culmination

クルミネーション. 何かの最高潮、特に長い時間を経て達成されたもの。
Meaning
The highest or climactic point of something, especially as attained after a long time.
Example
The project reached its culmination after years of effort.
プロジェクトは長年の努力の末、最高潮に達しました。
C1 noun /kliːˈʃeɪ/

cliche

決まり文句
Meaning
An overused expression or idea that has lost its originality or impact.
Example
The speech was filled with old clichés that failed to inspire the audience.
そのスピーチは古い決まり文句でいっぱいで、聴衆を感動させることができませんでした。
C1 verb /ˈkɒŋɡrɪɡeɪt/

congregate

集まる, 集結する
Meaning
to gather together in a group; to assemble
Example
People congregate in the town square every evening.
人々は毎晩町の広場に集まります。
C1 noun /ˌkʌl də ˈsæk/

cul de sac

袋小路
Meaning
A street or passage closed at one end; a dead end.
Example
They bought a house at the end of a quiet cul de sac.
彼らは静かな袋小路の先に家を買いました。
C1 noun kənˈɡlɒm.ər.ət

conglomerate

複合企業
Meaning
A large corporation formed by the merging of separate and diverse firms.
Example
The company grew into a multinational conglomerate.
その会社は多国籍の複合企業になった。
C1 adjective /ˈkɔː.stɪk/

caustic

腐食性の、鋭い皮肉な
Meaning
able to burn or corrode by chemical action; severely sarcastic
Example
Her caustic remarks hurt his feelings.
彼女の鋭い皮肉な発言は彼の感情を傷つけた。
C1 noun /ˌkɒmpɪˈleɪʃən/

compilation

コンピレーション
Meaning
a collection of things, especially pieces of writing or music, gathered together
Example
The book is a compilation of his best essays.
その本は彼の最高のエッセイのコンピレーションです。
C1 noun /ˈkɒndɪmənt/

condiment

調味料/ソース
Meaning
a substance such as salt, mustard, or ketchup that is used to add flavor to food
Example
Ketchup is a popular condiment in many countries.
ケチャップは多くの国で人気の調味料です。
C1 noun /ˈʃɪvəlri/

chivalry

騎士道
Meaning
The medieval knightly system with its moral, social, and religious code; courteous behavior, especially toward women.
Example
The knight lived by the code of chivalry.
騎士は騎士道の規範に従って生きていました。
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 /kəˈθɑːrsɪs/

catharsis

カタルシス
Meaning
The process of releasing strong emotions, providing relief.
Example
Writing in her diary was a form of catharsis for her.
彼女の日記に書くことは、彼女にとって一種のカタルシスでした。
C1 adjective /kɔɪ/

coy

控えめな, 内気な
Meaning
reluctant to give details or reveal feelings; shy or reserved
Example
She gave a coy smile when asked about her plans.
彼女は自分の計画について聞かれたとき、控えめな笑顔を見せた。
C1 phrase ˌkæt.əˈɡɒr.ɪ.kəl.i rɪˈfjuː.tɪd

categorically refuted

完全に否定された
Meaning
Completely and absolutely denied or disproved.
Example
The claims were categorically refuted by officials.
その主張は公式に完全に否定されました。
C1 noun, verb /ˈkɒmjuːn/

commune

共同体 / 心を通わせる
Meaning
Noun: a group of people living together and sharing possessions; Verb: to share one's thoughts or feelings intimately.
Example
She went to the countryside to commune with nature.
彼女は自然と心を通わせるために田舎に行った。
C1 noun /ˈkɔːrdən/

cordon

封鎖線
Meaning
a line or circle of police, soldiers, or guards preventing access
Example
The police set up a cordon around the crime scene.
警察は犯罪現場の周りにコルドンを設置しました。
C1 noun kəˈlæt.ər.əl

collateral

担保、ローンの保証として提供される資産
Meaning
Something pledged as security for repayment of a loan, to be forfeited in the event of a default.
Example
The bank requires collateral for loan approval.
銀行はローン承認のために担保を要求します。
C1 adjective /ˈkoʊvərt/

covert

秘密
Meaning
hidden, secret, or not openly acknowledged
Example
The spy conducted a covert operation behind enemy lines.
スパイは敵の線の後ろで秘密の作戦を行った。
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 noun /ˈkɒndjuɪt/ or /ˈkɑːnduɪt/

conduit

導管 / 手段
Meaning
a channel or pipe for conveying water, electricity, or information
Example
The cable was placed inside a protective conduit.
ケーブルは保護された導管内に配置されました。