Supersonic
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C1 adjective /ˌsuː.pəˈsɒn.ɪk/

Supersonic

音速より速い; 音速を超える速度に関連する
Meaning
faster than the speed of sound; relating to speeds greater than the speed of sound
Example
The supersonic jet broke the sound barrier.
超音速ジェットは音の壁を破った。
C1 noun /sɪˈkriː.ʃən/

Secretion

分泌
Meaning
a process by which substances are produced and discharged from a cell or gland
Example
Insulin secretion is crucial for blood sugar regulation.
インスリン分泌は血糖値の調整に不可欠です。
C1 noun /pɔl/

Pall

棺の上に広げる布; 陰鬱な雰囲気を作り出す暗いカバー
Meaning
a cloth spread over a coffin; a dark covering that creates a gloomy atmosphere
Example
A pall of smoke hung over the burning building.
煙のヴェールが燃える建物の上に掛かっていた。
C1 noun /ˈrɛt.ər.ɪk/

rhetoric

効果的または説得力のある話し方または書き方の技術
Meaning
The art of effective or persuasive speaking or writing; skillful use of language to influence others.
Example
Political leaders often use rhetoric to influence people.
政治指導者たちはしばしば人々に影響を与えるためにレトリックを使います。
C1 noun /rɪˈkɒnɪsəns/

reconnaissance

偵察
Meaning
A survey or exploration, especially for military or strategic purposes.
Example
The soldiers conducted a reconnaissance of the enemy camp.
兵士たちは敵のキャンプの偵察を行った。
C1 adverb /rɪˈspek.tə.bli/

Respectably

敬意を表して; きちんと;
Meaning
in a way that is worthy of respect; decently; properly
Example
She was dressed respectably for the interview.
彼女は面接のためにきちんとした服装をしていた。
C1 noun /ˈiːkwɪnɒks/

equinox

昼夜平衡
Meaning
The time or date when day and night are of equal length, occurring twice a year.
Example
The spring equinox marks the beginning of longer days.
春分は長い日が始まることを示します。
C1 noun /ɪmˌpɜː.sənˈeɪ.ʃən/

impersonation

なりすまし
Meaning
The action of pretending to be another person for the purpose of entertainment or fraud.
Example
Online impersonation is a serious cybercrime.
オンラインでのなりすましは重大なサイバー犯罪です。
C1 noun, verb, adjective /ˈæɡ.rɪ.ɡət/ (noun/adjective), /ˈæɡ.rɪ.ɡeɪt/ (verb)

aggregate

集合体, 総体
Meaning
A whole formed by combining several elements; to combine into a total.
Example
The data was aggregated to provide a clearer picture of the market.
データは市場のより明確な画像を提供するために集約されました。
C1 noun /ˌrætɪfɪˈkeɪʃən/

Ratification

承認
Meaning
the action of signing or giving formal consent to a treaty, contract, or agreement
Example
The treaty required ratification by both countries' parliaments.
その条約は両国の議会による批准を必要とした。
C1 adjective /ˌʌnrɪˈfaɪnd/

unrefined

未精製の
Meaning
not processed or purified; lacking polish or sophistication
Example
The unrefined oil must be processed before it can be used as fuel.
未精製の石油は燃料として使う前に処理する必要がある。
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 adjective /ɪnˈdʒʊəriəs/

injurious

有害な
Meaning
Causing or likely to cause harm or damage.
Example
Smoking is injurious to health.
喫煙は健康に有害です。
C1 verb /ˈteɪpər/

taper

先細りになる
Meaning
To gradually decrease in width, thickness, or intensity.
Example
The road tapers off as it reaches the mountains.
道路は山に到達するにつれて細くなります。
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 /ˈflʌtər/

flutter

羽ばたく / 震える
Meaning
to move or flap quickly and lightly; to beat or wave with small rapid motions
Example
The butterfly began to flutter its wings in the sunlight.
蝶が日光の中で羽ばたき始めた。
C1 adjective /ˌfʊl ˈbɒd.id/

full-bodied

濃厚な味わい
Meaning
Having a strong, rich, and robust quality, especially of wine, coffee, or voice.
Example
He prefers a full-bodied red wine with his dinner.
彼は夕食に濃厚な味わいの赤ワインを好みます。
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 /ˈnʌrɪʃ/

nourish

栄養を与える
Meaning
To provide with food or other substances necessary for growth, health, and good condition
Example
Good books nourish the mind.
良い本は心を栄養します。
C1 adjective /ˌmer.ɪˈtɔː.ri.əs/

Meritorious

称賛に値する
Meaning
deserving reward or praise; commendable; worthy of recognition
Example
His meritorious service to the community was recognized.
彼の社会への価値ある貢献は認められました。
C1 adjective /ˈsɛm.ɪ.nəl/

seminal

幸福
Meaning
Strongly influencing later developments; highly original and influential.
Example
His seminal book changed the course of modern philosophy.
彼女は賞を受け取ったとき、自分の幸福を隠せませんでした。
C1 verb ˈɔːr.kɪ.streɪt

orchestrate

調整する
Meaning
To plan or coordinate the elements of (a situation) to produce a desired effect, especially surreptitiously.
Example
He skillfully orchestrated the entire event.
彼は巧妙に全体のイベントを調整しました。
C1 noun /bɒmˈbɑːrdmənt/

bombardment

爆撃
Meaning
a continuous attack with bombs or other projectiles
Example
The city endured a heavy bombardment during the war.
その都市は戦争中に激しい爆撃に耐えた。
C1 adjective ˈmær.ɪ.taɪm

Maritime

海事の
Meaning
Connected with the sea, especially in relation to seafaring commercial or military activity.
Example
Maritime trade enhances the economy.
海上貿易は経済を促進する。
C1 verb /ədˈmɪnɪstreɪt/

administrate

管理する
Meaning
to manage or supervise the execution of duties, laws, or resources; to formally give or apply something such as a test or medicine
Example
The committee will administrate the new policy across all departments.
委員会はすべての部門で新しい方針を管理する。
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 noun /dɪˌnʌnsiˈeɪʃən/

denunciation

非難 / 公共の告発
Meaning
the public condemnation or accusation of someone or something
Example
The journalist's article was a strong denunciation of corruption.
ジャーナリストの記事は腐敗に対する強い非難でした。
C1 adjective /pəˈnʌltɪmət/

penultimate

最後から二番目
Meaning
second to the last in a sequence or series
Example
She finished the penultimate chapter before going to sleep.
彼女は寝る前に最後から二番目の章を終えた。
C1 adjective /əˈfɜːrmətɪv/

affirmative

肯定的
Meaning
expressing agreement, approval, or a positive response
Example
She gave an affirmative answer to the proposal.
彼女は提案に対して肯定的な回答をしました。
C1 adjective /ˈɪnsjələr/

insular

狭い心の、島に関連する
Meaning
Narrow-minded, isolated, or relating to an island.
Example
The community was criticized for its insular attitudes toward outsiders.
そのコミュニティは外部の人々に対する狭量な態度で批判されました。
C1 adjective, verb /muːt/

moot

Meaning
Adjective: subject to debate or irrelevant. Verb: to suggest an idea for discussion.
Example
The issue of funding became a moot point after the project was canceled.
C1 adverb /ˈheɪs.tɪ.li/

Hastily

急いで
Meaning
in a hurried or rushed manner; quickly and carelessly
Example
She hastily packed her bags before leaving for the airport.
彼女は空港に行く前に急いでバッグを詰めた。
C1 adjective /dɪˈʃɛvəld/

disheveled

乱れた
Meaning
Untidy, messy, or in disorder, especially of hair or clothing.
Example
He arrived with disheveled hair and wrinkled clothes.
彼は乱れた髪とシワの寄った服で到着しました。
C1 noun /ˌɪnkəmˌpætəˈbɪlɪti/

incompatibility

非互換性
Meaning
the state of being unable to exist or work together harmoniously; lack of compatibility
Example
The project failed because of incompatibility between the two software systems.
2つのソフトウェアシステムの非互換性のため、そのプロジェクトは失敗した。
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/adjective /klɛft/

cleft

ひび
Meaning
a split or crack; a space or opening made by cleavage
Example
The goat disappeared into a cleft in the rocks.
ヤギは岩のひびに消えました。
C1 adjective /ɪnˈtændʒəbl/

intangible

無形の
Meaning
Unable to be touched or grasped; not having a physical presence.
Example
Trust is an intangible quality in relationships.
信頼は関係において無形の特質です。
C1 noun /əbˈstrʌkʃən/

obstruction

障害
Meaning
Something that blocks or gets in the way; the action of obstructing.
Example
There was an obstruction on the railway track.
鉄道の線路に障害がありました。
C1 noun /ˌpɜːrmjuˈteɪʃən/

permutation

置換
Meaning
An arrangement or reordering of elements, often in mathematics or logic.
Example
The puzzle can be solved by trying all possible permutations of the tiles.
パズルはタイルのすべての可能な置換を試すことで解決できます。
C1 noun /ˈpluː.mɪdʒ/

plumage

羽毛
Meaning
the feathers covering a bird's body
Example
The peacock's plumage was vibrant and eye-catching.
クジャクの羽毛は鮮やかで目を引いた。
C1 verb /koʊˈhæbɪt/

cohabit

同棲する
Meaning
To live together, often as partners without being married.
Example
They decided to cohabit before getting married.
彼らは結婚前に同居することを決めました。
C1 verb /kəmˈprɛs/

compress

圧縮する
Meaning
to press or squeeze something so that it becomes smaller
Example
The file was compressed to save storage space.
ファイルは圧縮されてストレージスペースを節約しました。
C1 adjective /ˈsʌltri/

sultry

蒸し暑く湿った、魅力的な
Meaning
Uncomfortably hot and humid; also describes someone attractive in a passionate or sensual way.
Example
The sultry weather made it hard to focus on work.
蒸し暑い天気は仕事に集中するのを難しくしました。
C1 adjective /ɒˈstɛnsəbl/

ostensible

見せかけの
Meaning
stated or appearing to be true, but not necessarily so
Example
His ostensible reason for leaving was illness, but many doubted it.
彼の出発の見せかけの理由は病気だったが、多くの人がそれを疑っていた。
C1 adjective /səˈriːn/

serene

静かで平和な
Meaning
Calm, peaceful, and untroubled; tranquil.
Example
The lake had a serene and peaceful atmosphere.
湖は静かで平和な雰囲気を持っていました。
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 /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 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 rɪˈdʌndənsi

redundancy

冗長性、過剰
Meaning
The state of being not or no longer needed or useful; superfluousness.
Example
The redundancy in the company's workforce led to many layoffs.
会社の労働力の冗長性は多くの解雇を引き起こしました。
C1 noun ˌɔːɡ.menˈteɪ.ʃən

augmentation

増加または拡張
Meaning
Increasing quantity, power or performance.
Example
The company invested in the augmentation of its workforce.
その会社は労働力の増強に投資しました。
C1 noun /ˈθʌroʊˌbrɛd/

thoroughbred

純血種の馬
Meaning
a horse of pure and recognized breed; a person of good breeding or education
Example
The jockey rode a fast thoroughbred in the race.
ジョッキーはレースで速いサラブレッドに乗った。
C1 adjective /ɔːˈtɒn.ə.məs/

autonomous

自律
Meaning
Acting independently or having the freedom to do so.
Example
Autonomous systems ensure greater precision.
自律システムはより高い精度を確保します。
C1 adjective /ˌprɛfəˈrɛnʃəl/

preferential

優遇
Meaning
showing or giving advantage to one over others
Example
Members receive preferential treatment at the club.
メンバーはクラブで優遇されます。
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 adjective, noun /ˈsɛlɪbət/

celibate

Meaning
abstaining from marriage and sexual relations; a person who does so
Example
He chose to remain celibate for religious reasons.
C1 noun /dʒɪst/

Gist

要点
Meaning
the substance or essence of a speech or text; the main point
Example
I missed the beginning of the lecture, but I caught the gist of the professor's argument.
私は講義の始まりを逃しましたが、教授の議論の要点を理解しました。
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 noun /ɪˌluːmɪˈneɪʃən/

illumination

Meaning
the act of lighting something or making something clear
Example
The street was filled with bright illumination from the lamps.
C1 noun /əˈvɜːrʒən/

aversion

嫌悪
Meaning
a strong feeling of dislike or unwillingness towards something
Example
She has a strong aversion to smoking.
彼女は喫煙に強い嫌悪感を持っています。
C1 adjective /ɪnˈæk.tɪv/

Inactive

非アクティブ
Meaning
not active; not working; dormant; idle
Example
The volcano has been inactive for over a century.
この火山は1世紀以上も活動していない。
C1 verb /əˈkrɛdɪt/

accredit

認証
Meaning
to officially recognize, authorize, or approve someone or something
Example
The university is accredited by the national education board.
その大学は国の教育委員会から認定されています。
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 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 /ˈmiːɡər/

meager

乏しい
Meaning
Lacking in quantity or quality; inadequate.
Example
He could barely survive on his meager salary.
彼は乏しい給料でかろうじて生きていけた。
C1 noun /ˈmæroʊ/

Marrow

骨髄
Meaning
A soft fatty substance in the cavities of bones; the essence of something
Example
The bone marrow produces blood cells in the human body.
骨髄は人体で血液細胞を生成します。
C1 adjective /ˌdaɪəˈbɒlɪkəl/

diabolical

悪魔的
Meaning
Wicked, cruel, or outrageously bad; resembling the devil.
Example
The dictator’s diabolical rule brought misery to the nation.
独裁者の悪魔的な支配は国に苦しみをもたらした。
C1 noun/verb /ˈætrəfi/

atrophy

萎縮
Meaning
a decrease in size or wasting away of a body part, tissue, or ability due to lack of use
Example
Without regular exercise, muscles may atrophy over time.
定期的な運動がないと、筋肉は時間とともに萎縮する可能性があります。
C1 verb /ˈnjuːtrəlaɪz/

neutralize

無力化する
Meaning
to make something ineffective or harmless
Example
The medicine helped neutralize the poison in his system.
その薬は彼の体内の毒を無効にするのを助けました。
C1 noun ˈvɜːmɪn

vermin

制御が難しく、病気を広める小さな害を与える動物や昆虫
Meaning
Small harmful animals or insects that are difficult to control and carry disease.
Example
The house was infested with vermin, requiring immediate action.
その家は害虫で侵され、即時の対応が必要でした。
C1 adjective /ˈmuː.və.bl̩/

Movable

可動の; ポータブル; 移動可能
Meaning
capable of being moved; not fixed in position
Example
The furniture is movable so we can rearrange the room easily.
家具は可動なので、部屋を簡単に再配置できます。
C1 noun /ˈtɒr.ənt/

Torrent

激流; 洪水
Meaning
a strong and fast-moving stream of water or other liquid; a sudden, violent, and copious outpouring
Example
The heavy rain created a torrent of water rushing down the mountain.
激しい雨が山を下る水の流れを作り出しました。
C1 adjective /ɪnˈfriːkwənt/

infrequent

稀な
Meaning
Happening rarely or not often.
Example
He made infrequent visits to his hometown after moving abroad.
彼は海外に移住した後、故郷にあまり頻繁に訪れることはありませんでした。
C1 adjective /fɪkˈtɪʃəs/

fictitious

虚構の、偽の
Meaning
not real or true; imaginary or fabricated
Example
The story he told was entirely fictitious.
彼が話した話は完全に虚構だった。
C1 noun /ˈprɛsɪdəns/ or /prɪˈsiːdəns/

precedence

優先
Meaning
the condition of being considered more important than someone or something else; priority
Example
Safety takes precedence over speed in this factory.
この工場では、安全が速度より優先されます。
C1 noun /kwɔːrˈtɛt/

quartet

カルテット
Meaning
A group of four people playing music or singing together.
Example
The string quartet performed beautifully at the concert.
弦楽四重奏団はコンサートで素晴らしい演奏をしました。
C1 verb /ɪnˈfjʊərieɪt/

infuriate

激怒させる
Meaning
To make someone extremely angry.
Example
His careless remarks infuriated the entire team.
彼の不注意な発言がチーム全体を怒らせた。
C1 noun /meɪl treɪn/

Mail train

郵便列車
Meaning
a train that carries mail and postal packages
Example
The mail train departs every evening to deliver letters across the country.
メール列車は毎晩、国内中に手紙を届けるために出発します。
C1 noun /ˈsɪn.ɪˌsɪz.əm/

cynicism

シニシズム
Meaning
An inclination to believe that people are motivated purely by self-interest; skepticism.
Example
His cynicism made it hard for him to trust anyone.
彼のシニシズムは、誰かを信頼するのを難しくしていた。
C1 adjective /dʒəˈnɛrɪk/

generic

ジェネリック
Meaning
characteristic of or relating to a whole group or class; not specific
Example
This medicine is available in generic form.
この薬はジェネリックの形態で提供されています。
C1 noun ˈhaɪ.drə.dʒən ˈpaʊ.əd bʌsɪz

hydrogen-powered buses

水素バス
Meaning
Buses powered by hydrogen fuel cells that produce only water vapor as emission.
Example
Hydrogen-powered buses reduce air pollution.
水素バスは大気汚染を減らします。
C1 noun ɪnˌvaɪ.rənˈmen.təl ˌtræns.fəˈmeɪ.ʃən

environmental transformation

環境変革
Meaning
A significant change in environmental conditions or ecological systems.
Example
The city demonstrates environmental transformation.
この都市は環境変革を示しています。
C1 adjective /ˌmɪsəˈleɪniəs/

Miscellaneous

雑多な; 混合された; 多様な
Meaning
various; diverse; mixed; assorted
Example
The box contained miscellaneous items from different periods.
箱には異なる時期のさまざまなアイテムが含まれていました。
C1 adjective /ˈmɔːrn.fəl/

mournful

悲しい
Meaning
feeling, expressing, or causing sadness or grief
Example
The mournful song reminded her of lost loved ones.
悲しい歌は彼女に失った愛する人々を思い出させました。
C1 verb /ʌnˈɜːθ/

unearth

発掘する
Meaning
To dig up from the ground or to discover something hidden.
Example
Archaeologists unearthed ancient artifacts at the site.
考古学者たちはサイトで古代の遺物を発掘した。
C1 verb /ˌɪntərˈsɛpt/

intercept

Meaning
to stop, catch, or seize something on its way from one place to another
Example
The police intercepted the stolen car before it crossed the border.
C1 adjective ˌʌn.pəˈtɜːbd

unperturbed

何かに悩まされたり、動揺したりしない; 冷静で落ち着いている
Meaning
Not worried or disturbed by something; calm and composed.
Example
She remained unperturbed despite the challenges.
彼女は挑戦にもかかわらず冷静さを保っていた。
C1 adjective /dɪˈmɒnstrətɪv/

demonstrative

表現的な
Meaning
openly showing feelings, especially affection or emotion
Example
She was very demonstrative with her affection towards her friends.
彼女は友達に対してとても表現的だった。
C1 adjective /məˈlɪʃəs/

Malicious

悪意のある; 有害な
Meaning
having or showing a desire to cause harm to someone; spiteful
Example
The malicious software damaged many computers.
悪意のあるソフトウェアが多くのコンピュータを破壊しました。
C1 noun /ˈnʌr.ɪʃ.mənt/

nourishment

栄養
Meaning
Food and nutrients necessary for the body's growth and development.
Example
Proper nourishment is essential for child development.
適切な栄養は子供の発達に不可欠です。
C1 adjective /ɔːˈdeɪ.ʃəs/

Audacious

大胆
Meaning
showing willingness to take bold risks; daring
Example
His audacious plan to climb the mountain without proper equipment shocked everyone.
彼の大胆な計画は、適切な装備なしで山を登ろうとすることで、全員を驚かせた。
C1 verb /plɒd/

plod

ゆっくりと働く
Meaning
to work slowly and steadily, often with effort or difficulty
Example
He plodded through his homework despite feeling tired.
疲れていたけど、彼は宿題をゆっくりやっていた。
C1 adjective /ɪnˈseɪʃəbl̩/

insatiable

満たされない
Meaning
impossible to satisfy; always wanting more
Example
Her insatiable curiosity drove her to read every book in the library.
彼女の満たされない好奇心は、図書館のすべての本を読むように彼女を駆り立てた。
C1 adjective /ʌnˈseɪvəri/

unsavory

不快
Meaning
Disagreeable, unpleasant, or morally offensive.
Example
The politician was linked to an unsavory scandal.
その政治家は不快なスキャンダルに関連していました。
C1 adjective /ˈriː.fleks/

Reflex

反射
Meaning
an action performed without conscious thought; relating to reflection
Example
The doctor tested her reflex response by tapping her knee.
医師は彼女の膝を軽く叩いて反射的な反応をテストしました。
C1 verb /əˈluːd/

allude

ほのめかす
Meaning
To refer to something indirectly or casually.
Example
The professor alluded to Shakespeare during the lecture.
教授は講義中にシェイクスピアに言及した。
C1 adjective /ˌnɒn ɪɡˈzɪstənt/

non-existent

存在しない
Meaning
not real or not present; lacking existence
Example
The supposed evidence turned out to be non-existent.
仮定された証拠は存在しないことが判明しました。
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 /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 adjective /ˈdiːviəs/

devious

狡猾な
Meaning
Skillful at using underhanded tactics to achieve goals; not straightforward.
Example
He used a devious plan to gain control of the company.
彼は会社の支配権を握るために、狡猾な計画を使いました。
C1 adjective /ˈʃɪvəlrəs/

chivalrous

騎士道精神
Meaning
Behaving in a courteous, gallant, and honorable way, especially toward women.
Example
He was chivalrous, always opening doors for others.
彼は騎士道精神を持っており、常に他の人のためにドアを開けていました。
C1 adjective /ˌhæpi ɡoʊ ˈlʌki/

happy-go-lucky

おおらかで、気楽な、無頓着な
Meaning
cheerfully unconcerned about the future; carefree
Example
She has a happy-go-lucky attitude and never worries about tomorrow.
彼女はハピゴーラッキーな態度を持っており、明日のことを心配することはありません。
C1 adjective ˈdɔːn.tɪŋ

daunting

威圧的または挑戦的な
Meaning
Something that seems intimidating or challenging.
Example
The task seemed daunting, but she completed it successfully.
その仕事は威圧的に見えたが、彼女はそれを成功裏に終わらせた。
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 /ˈpær.ə.nɔɪd/

paranoid

他人に対して不合理な恐怖や疑いを持つこと
Meaning
having an unreasonable fear or suspicion of others
Example
She became paranoid after hearing strange noises outside.
彼女は外で奇妙な音を聞いた後、パラノイアになった。
C1 verb /ˈfɔːrtɪˌfaɪ/

fortify

強化する
Meaning
To strengthen a place, person, or thing physically or mentally.
Example
They fortified the city walls to protect against invasion.
彼らは侵略に備えて街の壁を強化しました。
C1 exclamation /juˈriːkə/

eureka

ユーレカ!
Meaning
An exclamation used to express a sudden discovery or realization.
Example
When the solution finally came to him, he shouted, 'Eureka!'
解決策がついに彼に浮かんだとき、彼は叫んだ。 'ユーレカ!'
C1 verb /sleɪ/

slay

Meaning
to kill violently; informally, to impress greatly
Example
The hero vowed to slay the dragon.
C1 noun ˈflɔː.rə ænd ˈfɔː.nə

flora and fauna

フローラとファウナ
Meaning
The plants and animals of a particular region, habitat, or geological period.
Example
The Galápagos Islands have unique flora and fauna.
ガラパゴス諸島には独特のフローラとファウナがあります。
C1 verb /ˈdʒepərdaɪz/

jeopardize

危険にさらす
Meaning
to put something at risk of being damaged or destroyed
Example
His reckless behavior could jeopardize his career.
彼の無謀な行動は彼のキャリアを危険にさらす可能性がある。
C1 noun /krʌst/

crust

外皮
Meaning
the hard outer surface of something, especially bread or the Earth's outer layer
Example
He cut off the crust of the bread before eating.
彼は食べる前にパンの外皮を切り取った。
C1 noun əˈpreɪ.zəl

appraisal

評価
Meaning
An assessment or evaluation of performance or quality.
Example
The annual appraisal determines salary increments.
年間の評価は給与の増加を決定します。
C1 noun /ˈprəʊ.lɒɡ/

prologue

序章
Meaning
an introduction to a book, play, or event
Example
The novel begins with a short prologue set in the past.
その小説は、過去に設定された短いプロローグで始まります。
C1 adjective /ræmˈbʌŋk.ʃəs/

rambunctious

騒々しい
Meaning
boisterous, energetic, and difficult to control.
Example
The rambunctious children filled the house with noise.
騒々しい子供たちが家を騒音で満たしました。
C1 noun/adjective /ˈmɪstɪk/

mystic

神秘的な、精神的な探求者
Meaning
relating to mysteries, spirituality, or hidden truths; a person who seeks spiritual insight
Example
The mystic devoted his life to meditation and spiritual discovery.
その神秘的な探求者は瞑想と精神的発見に人生を捧げました。
C1 verb /ˈhæmpər/

hamper

妨げる
Meaning
to hinder or impede the movement or progress of
Example
The heavy rain hampered our travel plans.
強い雨が私たちの旅行計画を妨げました。
C1 noun /spɛk/

speck

しみ
Meaning
A very small spot, mark, or particle.
Example
There was a tiny speck of dust on the glass table.
ガラスのテーブルに小さなほこりのしみがあった。
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 ˈsɪnədʒi

synergy

相乗効果, 協力
Meaning
The interaction or cooperation of two or more organizations, substances, or other agents to produce a combined effect greater than the sum of their separate effects.
Example
The synergy between the two companies led to a successful partnership.
二つの会社間の相乗効果により、成功したパートナーシップが生まれました。
C1 noun (plural of fungus) /ˈfʌndʒaɪ/

fungi

菌類
Meaning
a group of spore-producing organisms such as mushrooms, molds, and yeasts
Example
Fungi play an important role in breaking down organic matter in nature.
菌類は自然界で有機物を分解する重要な役割を果たします。
C1 adjective /ˌhɔːrtɪˈkʌltʃərəl/

horticultural

園芸に関連する
Meaning
Relating to the art or practice of garden cultivation and management.
Example
She studied horticultural science at the university.
彼女は大学で園芸学を学びました。
C1 noun /ʃæk/

Shack

小屋
Meaning
a small, crudely built dwelling; a poorly constructed building
Example
The fisherman lived in a small shack near the beach.
漁師は海岸近くの小さな小屋に住んでいました。