senility
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C1 noun /sɪˈnɪləti/

senility

老衰
Meaning
The state of being old and showing the weaknesses of age, especially mental decline.
Example
His forgetfulness was attributed to senility.
彼の忘れっぽさは老衰によるものとされました。
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 /dɪˈfaɪənt/

Defiant

反抗的な; 逆らう
Meaning
boldly resistant or challenging; disobedient
Example
The defiant student refused to follow the rules.
その反抗的な学生はルールに従うことを拒否しました。
C1 adjective /ˌsɛm.iˈæn.ju.əl/

semiannual

半年ごと
Meaning
Occurring twice a year; every six months.
Example
The company holds a semiannual meeting with all employees.
会社は6ヶ月ごとに全社員との会議を開きます。
C1 noun /ˈdiːviəns/

deviance

逸脱
Meaning
Behavior that differs from accepted social or moral standards.
Example
The book studies deviance in urban youth culture.
その本は都市の若者文化における逸脱を研究しています。
C1 adjective /ˈwɔːrˌlaɪk/

warlike

戦闘的
Meaning
Having an aggressive or militant nature; inclined to fight or engage in war.
Example
The tribe was known for its warlike traditions.
その部族は戦闘的な伝統で知られていました。
C1 verb /ˈtræmpəl/

trample

Meaning
to tread heavily on something and cause damage or injury
Example
The crowd trampled the flowers in the park.
C1 adjective /ˈæŋ.ɡjə.lər/

Angular

角度的な
Meaning
having sharp corners or edges; relating to angles
Example
The building has an angular design with sharp corners.
その建物は鋭い角を持つ角度的なデザインです。
C1 noun /ˈsɪstərhʊd/

sisterhood

姉妹関係
Meaning
The relationship between sisters, or a community of women united by shared experiences or goals.
Example
The feminist movement created a strong sense of sisterhood among women.
フェミニスト運動は女性たちの間に強い姉妹関係の感覚を生み出しました。
C1 noun /ˈpoʊl.stɑːr/

Polestar

北極星
Meaning
a bright star that appears to stay in the same position in the sky and is used for navigation
Example
Sailors used the polestar to navigate across the ocean.
船乗りはポールスターを使って海を渡った。
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 /ˈsteɪtli/

stately

威厳と壮大
Meaning
Having a dignified, majestic, and impressive appearance or manner.
Example
The stately mansion stood at the end of the long driveway.
その威厳ある邸宅は長いドライブウェイの終わりに立っていました。
C1 verb /rɪˈɡrɛs/

regress

Meaning
To return to a former or less developed state.
Example
Without proper guidance, the child's progress began to regress.
C1 noun /ˈiːdɪkt/

edict

勅令
Meaning
An official order, proclamation, or decree issued by an authority.
Example
The king issued an edict banning smoking in public places.
王は公共の場での喫煙を禁止するエディクトを発行しました。
C1 adjective /ˈsʌbstəntɪv/

substantive

重要
Meaning
Having a firm basis in reality; important, meaningful, or considerable.
Example
The company made substantive changes to its policy.
会社はその方針に重要な変更を加えました。
C1 adjective /kəmˈplaɪənt/

compliant

従順
Meaning
Willing to agree with or follow rules, requests, or demands.
Example
She was compliant with all the safety requirements.
彼女はすべての安全要件に従いました。
C1 verb /ˌdɪsɪmˈbɑːrk/

disembark

降りる
Meaning
To leave a ship, aircraft, or other vehicle.
Example
The passengers disembarked from the plane after landing.
乗客は着陸後、飛行機から降りました。
C1 adjective /ˌdɪsɪnˈdʒɛnjʊəs/

disingenuous

不誠実な
Meaning
not candid or sincere; giving a false appearance of honesty or openness
Example
She gave a disingenuous excuse for missing the meeting.
彼女は会議に出席しないために不誠実な言い訳をしました。
C1 adjective /ˌɪn.səbˈstæn.ʃəl/

insubstantial

不十分な
Meaning
Lacking strength, substance, or solidity.
Example
The evidence provided was insubstantial and unconvincing.
提供された証拠は不十分で説得力がなかった。
C1 noun /ˌtɒləˈreɪʃən/

toleration

寛容
Meaning
The practice of allowing something that one does not necessarily agree with.
Example
The government promoted religious toleration.
政府は宗教的寛容を促進した。
C1 phrase ˌhjuː.məˈnɪt.ər.i.kəˈtæs.trə.fi

humanitarian catastrophe

人道的災害
Meaning
A widespread disaster affecting human life, health, and well-being on a large scale.
Example
The war created a humanitarian catastrophe.
戦争は人道的災害を引き起こした。
C1 noun /pəˈfjuː.mər.i/

perfumery

香水産業
Meaning
the art, business, or products of making perfumes
Example
She works in a perfumery that creates luxury scents.
彼女は高級な香りを作り出すパフューマリーで働いています。
C1 noun /ˈtuːsəm/

twosome

ツーサム
Meaning
A pair of people considered together, often in a romantic or competitive context.
Example
They entered the dance competition as a twosome.
彼らはツーサムとしてダンスコンペティションに参加した。
C1 verb /ɪmˈpiːd/

impede

妨げる
Meaning
To obstruct or hinder the progress or development of something.
Example
Lack of funds can impede business growth.
資金不足はビジネスの成長を妨げる可能性があります。
C1 adjective /ˈɜːr.θən/

Earthen

土や粘土で作られた; 陶芸に関連する
Meaning
made of earth or clay; relating to pottery or ceramic materials
Example
The kitchen had beautiful earthen pots for storage.
キッチンには収納用の美しい土の鉢がありました。
C1 noun /rɪˈmɔːrs/

Remorse

後悔
Meaning
deep regret or guilt for a wrong committed; bitter regret for something done
Example
He felt deep remorse for his actions.
彼は自分の行動に対して深い後悔を感じていた。
C1 noun /ɒpˈtɒmɪtrɪst/

optometrist

オプトメトリスト
Meaning
A healthcare professional who examines eyes and prescribes corrective lenses.
Example
The optometrist prescribed new glasses for her.
オプトメトリストは彼女に新しい眼鏡を処方しました。
C1 noun /ˈsɜːrmən/

sermon

説教
Meaning
A religious discourse delivered by a preacher, often offering moral instruction or spiritual guidance.
Example
The pastor gave a moving sermon about compassion and forgiveness.
牧師は思いやりと許しについて感動的な説教をしました。
C1 noun /moʊl/

Mole

モグラ
Meaning
a small burrowing mammal with tiny eyes and soft fur
Example
The mole dug tunnels under the garden.
モグラは庭の下にトンネルを掘った。
C1 noun kəˈrəʊ.ʒən

corrosion

腐食
Meaning
The gradual destruction of materials by chemical or electrochemical reaction, especially of metals by oxidation.
Example
Corrosion in pipes leads to leakage.
パイプ内の腐食は漏れの原因となります。
C1 verb /ɪnˈsaɪt/

incite

扇動する
Meaning
to provoke; to stir up
Example
His speech incited the crowd to violence.
彼のスピーチは群衆を暴力に駆り立てた。
C1 verb /rɪˈtreɪs/

retrace

Meaning
to go back over a path or route; to recall and repeat steps taken earlier
Example
She retraced her steps to find her lost keys.
C1 adjective /ˈstɒdʒi/

stodgy

退屈な、時代遅れな
Meaning
Dull, uninspired, or old-fashioned; also heavy and hard to digest when referring to food.
Example
The lecture was so stodgy that many students struggled to stay awake.
その講義はあまりにも退屈で、多くの学生が目を覚ますのに苦労しました。
C1 noun ˌvɛn.əˈreɪ.ʃən

veneration

尊敬
Meaning
Great respect; reverence; the action of regarding with great respect or reverence.
Example
Many cultures show veneration for their ancestors.
多くの文化が祖先に対して尊敬を示します。
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 adjective /ʌnˈvaɪəbl/

unviable

実現不可能
Meaning
Not capable of working successfully; not feasible or practical.
Example
The project was deemed unviable due to high costs.
高額なコストのため、このプロジェクトは実現不可能と見なされました。
C1 noun/adjective /ˈstɜː.lɪŋ/

sterling

英国通貨 / 優れた
Meaning
British money, especially pounds; of excellent quality.
Example
She was praised for her sterling work on the project.
プロジェクトでの優れた仕事が称賛されました。
C1 noun /ˈaʊtˌkraɪ/

outcry

抗議
Meaning
A strong expression of public anger or disapproval.
Example
The decision sparked an outcry among the citizens.
その決定は市民の間で抗議を引き起こしました。
C1 adjective /ɪnˈvɜːs/

Inverse

逆の; 反対の
Meaning
opposite in order, nature, or effect; reversed
Example
There is an inverse relationship between price and demand.
価格と需要の間に逆の関係があります。
C1 noun /ˈlɛdʒɪsleɪtər/

legislator

立法者
Meaning
a person who makes laws, especially a member of a legislative body
Example
The legislator introduced a bill to improve healthcare.
立法者は医療サービス改善のために法案を提出しました。
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 verb /ɪnˈkɜːr/

incur

負う
Meaning
To bring upon oneself something undesirable, usually as a result of actions.
Example
He incurred a fine for parking in the wrong place.
彼は間違った場所に駐車して罰金を科せられた。
C1 adjective /pəˈfʌŋk.tər.i/

perfunctory

表面的な
Meaning
done without much effort, interest, or thought
Example
He gave a perfunctory nod and walked away.
彼は表面的にうなずいて、歩き去った。
C1 adjective /dɪˈlæpɪˌdeɪtɪd/

dilapidated

老朽化した
Meaning
Fallen into disrepair or ruin due to neglect or age.
Example
The family lived in a dilapidated house at the edge of town.
その家族は町の端にある老朽化した家に住んでいました。
C1 adjective /dɪˈfʌŋkt/

defunct

営業停止、廃止
Meaning
No longer existing, operating, or functioning.
Example
The company became defunct after the financial crisis.
その会社は金融危機の後で廃業しました。
C1 adjective /ˈsliːzi/

sleazy

不道徳な、汚い、または低品質な
Meaning
morally low, dirty, or cheap in quality
Example
He avoided the sleazy nightclub downtown.
彼はダウンタウンのスリージーなナイトクラブを避けた。
C1 noun /ˌɛlɪˈveɪʃən/

elevation

高度
Meaning
The act of raising something to a higher position or level.
Example
The hikers reached a high elevation after hours of climbing.
登山者たちは数時間の登攀後、高い高度に達しました。
C1 noun /kæsˈkeɪd/

Cascade

滝; 一連の段階や操作
Meaning
a waterfall; a succession of stages or operations
Example
The mountain cascade created a beautiful natural swimming pool below.
山の滝は下に美しい自然のスイミングプールを作りました。
C1 noun, verb /strænd/

strand

糸 / 取り残された
Meaning
Noun: A single thin length of thread, wire, or similar. Verb: To leave someone or something without a way of moving or leaving.
Example
The storm stranded many tourists on the island.
嵐は多くの観光客を島に取り残しました。
C1 noun /ɪnˈdɪrmənt/

endearment

愛情の言葉
Meaning
A word or phrase expressing affection or love.
Example
She whispered a gentle endearment to her child.
彼女は子供に優しい愛情の言葉をささやきました。
C1 noun prəˈpʌl.ʃən

propulsion

推進力
Meaning
The action of driving or pushing forward.
Example
Jet engines provide propulsion for aircraft to travel long distances.
ジェットエンジンは航空機に長距離を移動させるための推進力を提供します。
C1 noun ˌsætʃəˈreɪʃən

saturation

飽和
Meaning
The state of being saturated; the degree or extent to which something is dissolved or absorbed
Example
The saturation of the market with similar products reduced sales.
市場に同様の商品が溢れすぎて、販売が減少しました。
C1 verb /ˈɡlɒs.oʊ.vər/

glossover

無視する
Meaning
an informal or non-standard variant of 'gloss over', meaning to ignore or minimize something
Example
He tried to glossover his mistakes during the meeting.
彼は会議中に自分のミスを無視しようとした。
C1 noun /ɪkˈstɔːr.ʃən/

extortion

恐喝
Meaning
the practice of obtaining something, especially money, through force or threats
Example
The businessman was arrested for extortion after threatening his partner.
そのビジネスマンは、パートナーを脅迫した後、恐喝で逮捕されました。
C1 noun /prɪˈdɒmɪnəns/

predominance

優越性
Meaning
The state of being greater in number, strength, or importance.
Example
The predominance of online shopping has changed retail forever.
オンラインショッピングの優越性が小売業を永遠に変えました。
C1 noun /ˈdɪm.pəl/

Dimple

えくぼ
Meaning
a small depression in the flesh, either one that exists permanently or one that forms when smiling
Example
Her charming dimples appeared whenever she smiled at the children.
彼女の魅力的なえくぼは、子供たちに微笑むたびに現れました。
C1 noun ˈprɛvələns

prevalence

蔓延
Meaning
The fact or condition of being widespread; the extent to which something exists or occurs
Example
The prevalence of aging issues requires immediate attention.
老化問題の蔓延は即時の注意を必要とする。
C1 verb /rɪˈzaʊnd/

resound

反響する
Meaning
To fill a place with sound; to be celebrated or talked about widely.
Example
The hall resounded with applause.
ホールは拍手で反響しました。
C1 verb /dɪˈspɛns/

dispense

配布する
Meaning
To distribute or provide something, especially in portions.
Example
The machine dispenses clean drinking water.
その機械は清潔な飲料水を供給します。
C1 verb /fɔːrˈkloʊz/

foreclose

差し押さえる
Meaning
to take possession of a property due to the owner's failure to keep up mortgage payments
Example
The bank decided to foreclose on the property after months of missed payments.
銀行は何ヶ月も支払いを欠かした後、物件の差し押さえを決定しました。
C1 noun /ˈpeɪtriɑːrk/

patriarch

家長
Meaning
a male head of a family or tribe; an older respected man who leads a group
Example
As the family patriarch, he mediated disputes and kept long traditions alive.
家族の家長として、彼は争いごとを解決し、長い伝統を守りました。
C1 noun /kwɑːm/

qualm

疑念
Meaning
a feeling of doubt, worry, or fear about something
Example
She had no qualm about speaking her mind.
彼女は自分の考えを言うことに疑念を持っていなかった。
C1 verb /kəˈleɪt/

collate

整理する
Meaning
to collect, arrange, and combine in order
Example
The secretary collated the reports before the meeting.
秘書は会議前に報告書を整理した。
C1 noun ˈlaɪv.li.hʊd

livelihood

生計
Meaning
A means of securing the necessities of life; a way of making a living.
Example
Fishing is the primary livelihood of coastal communities.
漁業は沿岸地域の主な生計手段です。
C1 noun /ˈkoʊtʃ.mən/

Coachman

御者
Meaning
a person who drives a horse-drawn carriage or coach
Example
The coachman skillfully guided the horses through the busy streets.
御者は熟練して馬を賑やかな通りを通り抜けさせました。
C1 noun /kɪˈməʊnoʊ/

kimono

着物
Meaning
a traditional Japanese robe with wide sleeves, tied with a sash
Example
She wore a beautiful silk kimono at the ceremony.
彼女は儀式で美しい絹の着物を着ていた。
C1 adverb /ˈwɪmzɪkli/

Whimsically

遊び心いっぱいに
Meaning
In a playful, fanciful, or capricious manner; with sudden changes of mind
Example
She decorated her room whimsically with colorful balloons.
彼女は部屋をカラフルな風船で遊び心いっぱいに飾った。
C1 noun /ˈpeɪ.ɡən/

Pagan

異教徒
Meaning
a person holding religious beliefs other than the main world religions; a heathen
Example
Ancient Romans considered early Christians to be pagans.
古代ローマ人は初期のキリスト教徒を異教徒だとみなしていた。
C1 noun /fɪˈdɛl.ɪ.ti/

fidelity

忠誠心
Meaning
Faithfulness to a person, cause, or belief, demonstrated by continuing loyalty and support.
Example
A dog's fidelity to its owner is unmatched.
犬の忠誠心はその飼い主に対して比類のないものです。
C1 noun /ɪmˈpɜːrtɪnəns/

impertinence

無礼
Meaning
lack of respect; rudeness
Example
The teacher was shocked by the student's impertinence.
教師は生徒の無礼さに驚いた。
C1 adjective /ˌaʊtˈlændɪʃ/

outlandish

奇妙
Meaning
Looking or sounding bizarre or unfamiliar; strange.
Example
He wore an outlandish costume to the festival.
彼は祭りに奇妙な衣装を着ていました。
C1 noun /ˈdʒuː.bɪ.liː/

Jubilee

記念日; 特別な記念式典
Meaning
a special anniversary celebration, especially the 25th, 50th, or 60th anniversary of an important event
Example
The school celebrated its golden jubilee with a grand ceremony.
学校はその金色の記念日を豪華な式典で祝いました。
C1 noun /spæt/

spat

小さな口論
Meaning
a short, petty quarrel or argument
Example
They had a brief spat about who should do the dishes.
誰が皿を洗うべきかについて小さな口論がありました。
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。
C1 noun /krəˈvæs/

crevasse

深い亀裂
Meaning
a deep crack in a glacier or the earth’s surface
Example
The climbers carefully crossed the icy crevasse.
登山者たちは慎重に氷の亀裂を越えました。
C1 noun /ˈdɛsɪˌbɛl/

decibel

デシベル
Meaning
a unit used to measure the intensity of sound
Example
The noise level in the factory exceeded 90 decibels.
工場の騒音レベルは90デシベルを超えました。
C1 adjective /ˌaɪ.di.əˈlɒdʒ.ɪ.kəl/

ideological

イデオロギー的
Meaning
Relating to or based on a system of ideas or beliefs.
Example
The two parties are divided by deep ideological differences.
二つの党は深いイデオロギー的な違いによって分裂している。
C1 noun /rəˈpɪdəti/

rapidity

迅速さ
Meaning
The quality of moving or happening quickly; swiftness or speed.
Example
The rapidity of technological change is astonishing.
技術的な変化の速さは驚くべきものです。
C1 verb /trænˈskraɪb/

transcribe

Meaning
to make a written copy of spoken words or notes
Example
The secretary transcribed the meeting minutes.
C1 adjective /ˌɪndɪˈsaɪsɪv/

Indecisive

優柔不断な
Meaning
unable to make decisions quickly; hesitant; wavering
Example
She was indecisive about which university to attend.
彼女はどの大学に入学すべきか決めかねていた。
C1 verb /loʊð/

loathe

嫌う
Meaning
to feel intense dislike or disgust for
Example
He absolutely loathes being late to meetings.
彼は会議に遅れるのが大嫌いです。
C1 noun /ˈfæk.ʃən/

Faction

派閥
Meaning
a small organized dissenting group within a larger one
Example
Different factions within the party disagreed about the new policy.
党内の異なる派閥は新しい政策に対して意見が一致しませんでした。
C1 adjective /ˈɒptɪkəl/

optical

光学的
Meaning
related to or used in seeing or sight
Example
The optical illusion fooled everyone at the exhibition.
その光学的錯覚は展示会で皆を騙した。
C1 adjective /ɪˈnuːmərəbəl/

Innumerable

無数; 数えきれない; 無限
Meaning
too many to be counted; countless; infinite in number
Example
There are innumerable stars in the night sky that we cannot see with our naked eyes.
夜空には数えきれない星があり、私たちは裸眼では見ることができません。
C1 noun /əˈboʊd/

abode

住居
Meaning
a place of residence; a home
Example
They invited us to their humble abode.
彼らは私たちを彼らの質素な住居に招待しました。
C1 verb /ˌkaʊntərˈbæləns/

counterbalance

相殺する
Meaning
to offset or balance the effect of something
Example
Exercise can counterbalance the negative effects of stress.
運動はストレスの悪影響を相殺できます。
C1 adjective /ˈspaɪn.ləs/

Spineless

勇気がない; 意志が弱い; 臆病
Meaning
lacking courage or determination; weak-willed
Example
He was too spineless to stand up for his beliefs.
彼は自分の信念を貫くには、あまりにも臆病すぎた。
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 noun ˈlɪniɪdʒ

Lineage

家系
Meaning
Direct descent from an ancestor; ancestry or pedigree.
Example
Tracing your lineage can reveal unknown ancestors.
自分の家系を追跡することで、未知の先祖が明らかになることがあります。
C1 noun /ˈnep.ə.tɪz.əm/

Nepotism

縁故主義
Meaning
the practice of favoring relatives or friends in business or politics
Example
The company was accused of nepotism in its hiring practices.
その会社は採用活動においてネポティズムを行っていると非難された。
C1 noun /prəˈpɛlənt/

propellant

推進剤
Meaning
A substance that drives or pushes something forward, especially fuel in rockets or engines.
Example
The rocket uses a liquid propellant to launch into space.
ロケットは液体推進剤を使用して宇宙に打ち上げられます。
C1 adjective /ɪˈnɛpt/

inept

不器用
Meaning
lacking skill or ability; clumsy or incompetent
Example
His inept handling of the situation made it worse.
彼の不器用な状況の対処が状況を悪化させた。
C1 verb /əˈpiːz/

appease

なだめる / 満たす
Meaning
to calm or pacify someone by meeting their demands
Example
The manager tried to appease the angry customer.
マネージャーは怒っている顧客をなだめようとしました。
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 /rɪˈnaʊn/

Renown

名声; 評判
Meaning
the condition of being known or talked about by many people; fame
Example
The scientist achieved international renown for her discoveries.
その科学者は発見によって国際的な名声を得た。
C1 noun /ˈɛkstrəˌvɜːrt/

extrovert

外向的な人
Meaning
a person who is outgoing, sociable, and energized by being around other people
Example
As an extrovert, she enjoys meeting new people at social events.
外向的な人として、彼女は社交的なイベントで新しい人々と出会うのが好きです。
C1 noun /kʌˈstoʊ.di.ən/

Custodian

守衛; 管理人; 監督者
Meaning
a person who has responsibility for or looks after something; a caretaker or guardian
Example
The school custodian ensures that all buildings are clean and secure.
学校の管理人はすべての建物が清潔で安全であることを確認します。
C1 noun /ˌdɛrɪˈveɪʃən/

derivation

派生
Meaning
The origin or development of something from a source.
Example
The derivation of the word comes from Latin.
その単語の起源はラテン語から来ている。
C1 verb /ˈduːdəl/

doodle

Meaning
To draw or scribble absentmindedly, often while thinking about something else.
Example
She doodled flowers in the corner of her notebook during class.
C1 noun/verb /ˈtæm.pər.ɪŋ/

tampering

不正改ざん
Meaning
The action of interfering with something in order to cause damage or make unauthorized alterations.
Example
Tampering with evidence is a criminal offense.
証拠の改ざんは犯罪です。
C1 noun əˈniː.mi.ə

anemia

貧血
Meaning
A condition in which there is a deficiency of red blood cells or hemoglobin in the blood.
Example
Genetic therapy addresses anemia effectively.
遺伝子治療は貧血を効果的に治療します。
C1 verb /ˌdɪsəˈlaʊ/

disallow

許可しない
Meaning
to refuse to allow or accept something
Example
The referee disallowed the goal for offside.
審判はオフサイドのためゴールを認めませんでした。
C1 adjective /ˌɪrɪˈvɜːrsəbl/

irreversible

不可逆な
Meaning
Not able to be undone, changed, or reversed.
Example
The damage caused by the fire was irreversible.
火事によって生じた損害は不可逆でした。
C1 adjective /ˈfɪk.əl/

Fickle

気まぐれな; 不安定な; 変わりやすい;
Meaning
changeable; inconstant; liable to sudden unpredictable change
Example
His fickle nature made it hard to trust his promises.
彼の気まぐれな性格は、彼の約束を信じることを難しくした。
C1 noun /ˈhɜː.mɪt/

Hermit

宗教的な修行として孤独に生きる人；社会から退く人
Meaning
a person living in solitude as a religious discipline; someone who withdraws from society
Example
The old hermit lived alone in a small cabin deep in the mountains, away from civilization.
その老いたハーミットは文明から遠く離れた山の中の小さな小屋で一人で暮らしていた。
C1 noun /kɑːrˈtɒɡrəfi/

cartography

地図学
Meaning
The science or practice of drawing maps.
Example
She studied cartography at university to learn how to design maps.
彼女は大学で地図学を学び、地図のデザインを学びました。
C1 noun /viˈoʊlə/ or /ˈvaɪələ/

viola

ヴィオラ
Meaning
A stringed instrument slightly larger than a violin, with a deeper and mellower tone.
Example
She chose to play the viola in the school orchestra.
彼女は学校のオーケストラでヴィオラを演奏することを選びました。
C1 noun /ˌfæb.rɪˈkeɪ.ʃən/

fabrication

虚偽の発明
Meaning
The invention of false or misleading information; a lie or falsehood.
Example
The article was full of fabrication and misleading claims.
その記事は虚偽の発明と誤解を招く主張で満ちていました。
C1 noun /ˌdɪp.ləˈmæt.ɪk ˈmaɪl.stəʊn/

diplomatic milestone

外交上のマイルストーン
Meaning
A significant achievement or important event in diplomatic relations.
Example
Hosting the summit was a diplomatic milestone.
サミットの開催は外交上のマイルストーンでした。
C1 noun əˌsɪm.ɪˈleɪ.ʃən

Assimilation

同化
Meaning
Connecting new information with existing knowledge
Example
Proper assimilation of knowledge leads to effective learning.
知識の適切な同化は効果的な学習につながります。
C1 adjective /ˈɒm.ɪ.nəs/

Ominous

不吉な; 脅威の
Meaning
giving the impression that something bad will happen; threatening; foreboding
Example
The dark clouds looked ominous before the storm.
嵐の前に、暗い雲は不吉に見えました。
C1 adjective /ˈstrætɪfaɪd/

stratified

Meaning
arranged or classified in layers or strata
Example
Society in the past was highly stratified based on class and wealth.
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 /ˌboʊnəˈfaɪdi/

Bonafide

本物の; 正当な; 合法の
Meaning
genuine; authentic; legitimate
Example
She is a bonafide expert in her field.
彼女はその分野の本物の専門家です。
C1 noun /ˈpɛndənt/

pendant

ペンダント
Meaning
a piece of jewelry that hangs from a chain worn around the neck
Example
She wore a silver pendant around her neck.
彼女は首に銀のペンダントをつけていました。
C1 verb /ɪnˈlɪst/

enlist

登録する
Meaning
to join or sign up, especially for military service; to secure someone's support or help
Example
He decided to enlist in the army after graduation.
彼は卒業後に軍隊に入隊することに決めました。
C1 adjective /ɪkˈspiːdiənt/

expedient

便宜的
Meaning
suitable or convenient for achieving a particular end, sometimes at the expense of morality
Example
It was expedient to take the shortcut despite the risks.
リスクにもかかわらず、近道を取ることは便宜的だった。
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 adjective /dæft/

daft

ばか
Meaning
Silly or foolish.
Example
It was a daft idea to go hiking without water.
水なしでハイキングに行くのはばかげた考えでした。
C1 noun /dʒest/

Jest

冗談; いたずら
Meaning
a thing said or done for amusement; a joke
Example
His comment was made in jest, not to offend anyone.
彼のコメントは冗談で言われたもので、誰かを傷つけるためではなかった。
C1 adjective /ˌeɪpəˈlɪtɪkəl/

apolitical

政治的でない
Meaning
not interested in or not connected with politics
Example
She prefers to stay apolitical and focus on her work.
彼女は政治的でない態度を保ち、仕事に集中することを好みます。