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A1 noun /ˈvɪdiəʊ/

video

ビデオ
Meaning
a recording of moving visual images made digitally or on film
Example
She watched the video of her favorite concert online.
彼女はオンラインでお気に入りのコンサートのビデオを見ました。
C1 adjective /ˈkɔː.zəl/

causal

因果的
Meaning
relating to or acting as a cause
Example
There is a causal link between smoking and cancer.
喫煙と癌との間には因果関係があります。
C2 noun /ɪˌluːmɪˈnɑːti/

illuminati

イルミナティ
Meaning
a group of people claiming to have special enlightenment or secret knowledge, often linked to conspiracies
Example
Many conspiracy theories involve the Illuminati as a secret world-controlling group.
多くの陰謀論はイルミナティを世界を支配する秘密のグループとして扱っている。
B2 verb, noun /ˈtæk.əl/

tackle

Meaning
to try to deal with or solve a difficult problem; to physically stop someone in sports by knocking them down
Example
The coach taught the players how to tackle properly.
C1 noun /ˌdɒmɪˈneɪʃən/

domination

支配
Meaning
the exercise of control or influence over someone or something
Example
The empire sought domination over its neighbors.
帝国は隣国に対する支配を求めていた。
A2 noun ɪˈmɜː.dʒən.si

emergency

緊急事態
Meaning
A sudden situation that is dangerous or serious and needs immediate attention or action.
Example
A financial emergency can arise at any time.
財政的な緊急事態はいつでも発生する可能性があります。
C1 verb /diːm/

deem

みなす, 判断する
Meaning
to regard or consider in a specified way
Example
The project was deemed a success by the board.
そのプロジェクトは理事会によって成功だと見なされました。
C1 adjective /oʊˈbiːs/

obese

肥満
Meaning
Extremely overweight; having an excessive amount of body fat.
Example
The doctor advised the obese patient to adopt a healthier lifestyle.
医者は肥満患者に健康的な生活様式を採用するように勧めました。
A1 pronoun /ˈsʌmbədi/

somebody

誰か
Meaning
an unspecified person
Example
Somebody is knocking at the door.
誰かがドアをノックしています。
A2 verb /ɪnˈkɜːrɪdʒ/

encourage

励ます
Meaning
to give support, confidence, or hope; to motivate
Example
Teachers should encourage students to ask questions.
教師は生徒に質問をするように励ますべきです。
C1 noun /ɪnˈfɜː.mə.ti/

Infirmity

虚弱; 病気; 衰弱
Meaning
physical or mental weakness; a disease or ailment; frailty
Example
Despite his advanced age and various infirmities, he remained mentally sharp and alert.
高齢で多くの病気を抱えていても、彼は精神的に鋭く、警戒心を持ち続けました。
B2 adverb /ˈliːɡəli/

legally

合法的に
Meaning
in a way that is allowed by law
Example
He is legally responsible for his actions.
彼は自分の行動に対して合法的に責任があります。
C1 adjective /ˌdɪfəˈrɛnʃəl/

differential

差別的
Meaning
Relating to or showing a difference; involving a distinction.
Example
There is a differential treatment between the two groups.
2つのグループ間に差別的な扱いがあります。
B2 noun /ˈɒpəreɪtər/

operator

オペレーター
Meaning
a person who operates equipment, a business, or controls something
Example
The machine operator ensured that everything ran smoothly.
機械オペレーターは、すべてがスムーズに動作することを確認しました。
B2 noun/verb /ˌoʊvərˈlæp/

overlap

Meaning
To extend over and cover partly; an area where things coincide.
Example
The two meetings overlap by an hour.
C1 adjective /ˌɪnkɒmprɪˈhɛnsəbl/

incomprehensible

理解不能
Meaning
Impossible or very difficult to understand.
Example
The professor’s lecture was so fast it became incomprehensible.
教授の講義は速すぎて理解不能になった。
B2 noun /ˌaʊtˈsaɪdə(r)/

outsider

アウトサイダー
Meaning
a person who is not accepted as a member of a particular group or community
Example
As a new student, she often felt like an outsider at school.
新しい学生として、彼女は学校でよくアウトサイダーのように感じていました。
B2 noun /nɒsˈtæl.dʒə/

nostalgia

ノスタルジア
Meaning
A sentimental longing for the past, typically for a period or place with happy personal associations.
Example
Listening to old songs fills me with nostalgia.
古い歌を聞くと、ノスタルジアで満たされます。
C2 adjective /ʌnˈkɒnʃənəbl/

unconscionable

不正当な
Meaning
shockingly unfair or unreasonable
Example
The company made unconscionable profits from the crisis.
その会社は危機から不正当な利益を得ました。
B2 adjective ˈræd.ɪ.kəl

radical

伝統的な信念やシステムに反する根本的な変化をもたらす能力がある
Meaning
Capable of bringing fundamental changes opposite to conventional beliefs or systems.
Example
The leader proposed radical economic reforms.
リーダーはラディカルな経済改革を提案しました。
B2 adjective /ˈstɑːrtəld/

startled

驚いた
Meaning
suddenly shocked or surprised by something unexpected
Example
She was startled by the loud noise outside.
彼女は外の大きな音に驚いた。
C2 adjective /rɪˈdaʊ.tə.bəl/

redoubtable

恐ろしい/尊敬すべき
Meaning
formidable, especially as an opponent; inspiring fear or respect
Example
She was a redoubtable leader who commanded respect from all.
彼女は全員から尊敬を集める恐ろしいリーダーだった。
C2 adjective /ˌnɒnˈtrɪviəl/

nontrivial

非自明
Meaning
Not simple or easy; requiring effort or significant thought.
Example
Solving the equation turned out to be a nontrivial task.
方程式を解くことは非自明な作業であることが分かりました。
C2 adjective /ˈhaɪndmoʊst/

hindmost

最も後ろの
Meaning
Farthest back; last in position.
Example
The hindmost car in the convoy broke down first.
隊列で最も後ろの車が最初に壊れた。
B2 noun /ˈreɪ.dɑːr/

Radar

レーダー
Meaning
a system for detecting the presence, direction, distance of aircraft, ships by sending out radio waves
Example
The radar detected an unknown aircraft approaching the base.
レーダーは基地に接近する未知の航空機を検出しました。
B2 adjective /əˈdʒeɪsənt/

Adjacent

隣接する
Meaning
পার্শ্ববর্তী; সংলগ্ন; নিকটবর্তী;
Example
The hotel is adjacent to the shopping mall.
ホテルはショッピングモールの隣にあります。
A2 verb /kəˈnɛkt/

connect

接続する
Meaning
To join or fasten together; to establish a link or relationship.
Example
Social media helps us connect with others.
ソーシャルメディアは私たちが他の人と接続するのを助けます。
B2 adjective /ˈflɔː.ləs/

Flawless

完璧な; 欠陥なし
Meaning
perfect; without any defects or faults; immaculate
Example
Her flawless performance earned her a standing ovation.
彼女の完璧なパフォーマンスは、スタンディングオベーションを得た。
C2 noun /ˈniːəˌfaɪt/

neophyte

初心者
Meaning
A beginner or novice in a subject, skill, or belief.
Example
As a neophyte in programming, she often asked for guidance from her mentor.
プログラミングの初心者として、彼女はよくメンターに指導を求めていた。
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。
B1 adjective /ænˈtiːk/

Antique

アンティーク; 古い;
Meaning
old and valuable; belonging to ancient times
Example
She collected antique furniture from the Victorian era.
彼女はヴィクトリア時代のアンティーク家具を集めました。
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 /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。
B2 noun /prɔːn/

Prawn

エビ
Meaning
a large marine crustacean similar to shrimp but typically bigger
Example
The chef prepared delicious prawn curry with coconut milk.
シェフはココナッツミルクでおいしいエビカレーを作りました。
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。
C2 verb /ˈpɛrəɡrɪˌneɪt/

peregrinate

幸福
Meaning
To travel or wander from place to place.
Example
He loved to peregrinate across the countryside during summer.
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。
B2 adjective /kənˈsɪd.ər.ɪt/

Considerate

思いやりのある; 配慮深い
Meaning
showing careful thought about the feelings or wishes of others; thoughtful
Example
He is always considerate of others' feelings.
彼はいつも他人の感情に配慮しています。
A1 verb /θroʊ/

throw

投げる
Meaning
to send something through the air with force using your hand
Example
He can throw the ball very far.
彼はボールを非常に遠くに投げることができます。
C2 noun /ˈɒb.stɪ.nə.si/

obstinacy

頑固
Meaning
Stubborn refusal to change one's opinion or chosen course of action, despite attempts to persuade one to do so.
Example
His obstinacy made negotiations difficult.
彼の頑固さは交渉を難しくしました。
B2 noun /ˈloʊ.təs/

Lotus

蓮
Meaning
a large water flower that floats on the surface of ponds and lakes
Example
The lotus flower blooms beautifully in the quiet pond.
蓮の花は静かな池で美しく咲きます。
C1 noun /ænˈtɪθəsɪs/

antithesis

アンチテーゼ
Meaning
A person, thing, or idea that is the direct opposite of another; a rhetorical device contrasting opposing ideas in parallel structure.
Example
Love is the antithesis of hate.
愛は憎しみのアンチテーゼです。
B2 adjective /ˈærəɡənt/

Arrogant

傲慢; 高慢
Meaning
having an exaggerated sense of one's importance; proud
Example
His arrogant behavior made him very unpopular.
彼の傲慢な態度は彼を非常に不人気にした。
B2 adjective /slɪm/

slim

スリム
Meaning
thin in an attractive or healthy way; small in amount or chance
Example
She looked slim in her new dress.
彼女は新しいドレスでスリムに見えた。
A2 noun /ˈspiːkər/

speaker

スピーカー
Meaning
a person who speaks or talks, especially as an occupation
Example
The speaker delivered an inspiring speech at the conference.
スピーカーは会議で感動的なスピーチを行いました。
C1 verb /ɪnˈdaɪt/

indict

起訴する
Meaning
to formally accuse someone of committing a serious crime
Example
The grand jury decided to indict the politician for corruption.
大陪審団は腐敗のために政治家を起訴することを決定した。
C2 noun /ˈdʒaɪər/

gyre

渦, 円形海洋流
Meaning
A circular or spiral motion or form, especially a giant circular oceanic surface current.
Example
The Great Pacific Garbage Patch is trapped in a gyre.
太平洋のゴミの大きな塊は渦に閉じ込められています。
B2 adverb /kənˈtɪnjuəli/

Continually

絶えず; 繰り返し
Meaning
without stopping; repeatedly
Example
She continually checked her phone for messages.
彼女はメッセージのために絶えず電話を確認しました。
B2 noun /dɪˈnɒmɪˌneɪtər/

denominator

分母
Meaning
the number below the line in a fraction; a common factor in a situation
Example
In the fraction 3/4, the number 4 is the denominator.
3/4の分数では、4は分母です。
B2 adjective /mɑːrkt/

Marked

顕著な; 明確な; 独特な
Meaning
clearly noticeable; distinct; obvious
Example
There was a marked improvement in her performance.
彼女のパフォーマンスには顕著な改善がありました。
C2 noun /ˈfɪli/

filly

若い雌馬
Meaning
a young female horse
Example
The filly ran swiftly across the meadow.
その若い牝馬は草原を速く走った。
C1 verb /spɜːr/

spur

促す / 奨励する
Meaning
To encourage or motivate someone to take action.
Example
The teacher's praise spurred him to study harder.
教師の賞賛は彼にもっと一生懸命勉強するように促した。
A1 verb /riːd/

read

読む
Meaning
to look at written words and understand their meaning
Example
I read books before going to bed.
私は寝る前に本を読みます。
C1 noun /prəˈspɛktəs/

prospectus

募集要項
Meaning
a printed document that advertises or describes a school, business, or investment offering
Example
The university sent out a prospectus to attract new students.
大学は新しい学生を引き付けるために募集要項を送った。
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。
A1 noun /ˈbrʌðər/

brother

兄弟
Meaning
a male sibling
Example
My brother is two years older than me.
私の兄は私より2歳年上です。
B2 noun /kəʊˌɔːdɪˈneɪʃən/

coordination

調整
Meaning
the process of organizing different elements to work together effectively
Example
The coordination between the teams was flawless.
チーム間の調整は完璧でした。
C1 adverb /əˈnjuː/

anew

新たに
Meaning
In a new or different way; once more.
Example
After the failure, she decided to start her life anew.
失敗後、彼女は新たに人生を始めることを決意した。
A2 noun /wɜːrks/

works

作品
Meaning
the physical or mental effort used to achieve something
Example
Her works have been exhibited in museums worldwide.
彼女の作品は世界中の博物館で展示されています。
A2 noun /test/

test

テスト
Meaning
A procedure intended to establish the quality, performance, or reliability of something.
Example
Vehicle tests reduce emissions.
車両テストは排出量を減らします。
C1 noun /mɪˈlɪʃə/

militia

民兵
Meaning
a group of ordinary people who are trained to act as soldiers in emergencies
Example
The village formed a militia to defend against attacks.
村は攻撃から守るために民兵を結成した。
C1 noun /ˈbuːt.stræp.ɪŋ/

bootstrapping

自己資金による起業
Meaning
Starting a business with personal resources or small investments without external funding or venture capital.
Example
Many entrepreneurs rely on bootstrapping to launch their businesses.
多くの起業家はビジネスを立ち上げるためにブートストラッピングに依存しています。
B2 verb /ˈskætər/

scatter

散らす
Meaning
to spread or throw around in different directions
Example
The wind scattered the leaves across the yard.
風が庭に葉っぱを散らばらせた。
C1 verb /sɪˈsiːd/

secede

脱退する
Meaning
To formally withdraw from a political or organizational union.
Example
Several states threatened to secede from the union.
いくつかの州は連邦から脱退すると脅迫した。
B1 noun ˈbreɪvəri

bravery

勇気
Meaning
Courageous behavior or character; the quality of being brave.
Example
The bravery of our soldiers is unforgettable.
私たちの兵士たちの勇気は忘れがたいものです。
B2 noun /djʊˈreɪʃən/

duration

期間
Meaning
the length of time that something continues
Example
The meeting lasted for the duration of two hours.
会議は2時間の期間続きました。
C1 noun /ˈtræpɪŋz/

trappings

外見
Meaning
the outward signs, features, or objects associated with a role, event, or status
Example
The king appeared with all the trappings of royalty.
王はすべての王族の外見とともに現れました。
B1 noun /træp/

Trap

罠
Meaning
a device or enclosure designed to catch and retain animals, or a situation from which it is difficult to escape
Example
The mouse was caught in the trap overnight.
ネズミは一晩中トラップにかかっていました。
C1 adjective /ˌʌnəˈdɔːrnd/

unadorned

シンプルな、飾りのない
Meaning
Plain and simple; not decorated.
Example
The room was unadorned, with only a table and a chair.
部屋はシンプルで、テーブルと椅子だけがありました。
B1 adjective /əˈʃeɪmd/

Ashamed

恥ずかしい
Meaning
feeling embarrassed or guilty because of one's actions
Example
He was ashamed of his poor performance.
彼は自分の悪い成績に恥ずかしさを感じていた。
A1 noun /aɪ/

Eye

目; 視力
Meaning
the organ of sight; the ability to see
Example
Her eyes sparkled with joy.
彼女の目は喜びで輝いていた。
A2 verb /ʌpˈset/

upset

困らせる
Meaning
to make someone worried, sad, or angry; to disturb
Example
The bad news upset everyone.
悪いニュースはみんなを upset した。
C1 noun prəˈfaʊnd ɪˈnɪʃətɪv

profound initiative

深遠なイニシアティブ
Meaning
A deep, meaningful, and significant action or program designed to create change.
Example
A profound initiative can create sustainable changes.
深遠なイニシアティブは持続可能な変化を生み出すことができます。
B1 noun /læk/

Lack

不足; 欠如
Meaning
the state of being without or not having enough of something; absence or shortage
Example
The lack of rain this summer has caused serious problems for farmers.
この夏の雨不足が農家に深刻な問題を引き起こしました。
B2 noun ˌæn.tiˈɒk.sɪ.dənts

antioxidants

抗酸化物質
Meaning
A substance that may prevent or delay some types of cell damage.
Example
Fruits and vegetables are rich in antioxidants.
果物や野菜には抗酸化物質が豊富に含まれています。
C1 noun /ˈvænɡɑːrd/

vanguard

先駆者
Meaning
the forefront of an action, movement, or military force
Example
The company is at the vanguard of technological innovation.
その会社は技術革新の先駆者です。
B1 noun /ˈɡæsəˌliːn/

gasoline

ガソリン
Meaning
a liquid fuel made from petroleum, used mainly to power engines in vehicles
Example
The price of gasoline has increased significantly this month.
今月のガソリン価格は大幅に上昇しました。
B2 adverb /ˈæktɪvli/

actively

積極的に
Meaning
in a way that involves energetic participation or effort
Example
He is actively involved in community service.
彼は地域社会サービスに積極的に参加しています。
C2 adjective /ˈsiːkwənt/

sequent

次の
Meaning
Following in order or as a result.
Example
The sequent events changed the course of history.
次の出来事は歴史の流れを変えました。
C1 verb /əˈlʊər/

allure

魅力
Meaning
to attract or tempt someone with something desirable; to entice
Example
The beautiful garden allured visitors from far away.
美しい庭園が遠くから訪問者を魅了しました。
C1 adjective ɪmˈpɛkəbl

impeccable

完璧な
Meaning
In accordance with the highest standards; faultless.
Example
His impeccable taste in fashion was admired by all his peers.
彼の完璧なファッションセンスは、すべての同僚に賞賛されました。
C2 verb, noun /ɡaʊdʒ/

gouge

えぐる、不当に高く売る
Meaning
To cut or scoop out a deep hole or groove; to overcharge unfairly.
Example
He accidentally gouged a hole in the wooden table.
彼はうっかり木製のテーブルに穴を開けました。
A1 adjective /ˈsɔːri/

sorry

ごめん
Meaning
feeling regret or sympathy
Example
She felt sorry for what had happened.
彼女は起こったことを後悔していた。
C1 noun ɪˌlæˈstɪs.ə.ti

elasticity

弾力性
Meaning
The responsiveness of demand or supply to changes in price.
Example
The elasticity of demand for luxury goods is high.
贅沢品の需要の弾力性は高い。
B1 adjective /ˈnɔːðərn/

northern

北部の
Meaning
relating to the north or situated in the north
Example
The northern part of the country is known for its cold climate.
その国の北部は寒冷な気候で知られています。
C2 adjective /ˈkɒnfluənt/

confluent

合流
Meaning
Flowing together or merging; coming together at one point.
Example
The confluent streams formed a mighty river.
合流する小川が力強い川を作った。
C1 noun /ˈfjuː.də.lɪ.zəm/

feudalism

封建制度
Meaning
the social system in medieval Europe in which people worked and fought for nobles who gave them protection and land in return
Example
Feudalism shaped the political structure of medieval Europe.
封建制度は中世ヨーロッパの政治構造を形作った。
A2 noun /truːθ/

Truth

真実; 正直;
Meaning
the quality or state of being true; that which is true or in accordance with fact or reality
Example
The witness promised to tell the truth during the court hearing.
証人は法廷で真実を語ることを約束した。
C1 noun /ˈtrænsfərəns/

transference

転送
Meaning
The act of moving something from one place, person, or situation to another.
Example
The transference of knowledge is essential in education.
知識の転送は教育において不可欠です。
B1 noun ˈbæriə(r)

barrier

障壁
Meaning
A fence or other obstacle that prevents movement or access.
Example
The barrier prevented entry.
その障壁は入場を防ぎました。
C2 noun /ˈtɪŋktʃər/

tincture

わずかな痕跡、薬をアルコールに溶かして作られた薬
Meaning
a slight trace of something; a medicine made by dissolving a drug in alcohol
Example
There was a tincture of sadness in her smile.
彼女の笑顔にはわずかな悲しみの痕跡があった。
A2 noun /ˈfer.i.teɪl/

Fairy-tale

おとぎ話
Meaning
a children's story about magical and imaginary beings and lands
Example
Children love listening to fairy-tales before bedtime.
子供たちは寝る前におとぎ話を聞くのが大好きです。
A2 noun /ˈjuːzər/

user

ユーザー
Meaning
a person who uses or operates something
Example
He is a frequent user of this app.
彼はこのアプリの頻繁なユーザーです。
C2 adverb /əˈθwɔːrt/

athwart

横断, 反対
Meaning
Across or in opposition to something.
Example
A fallen tree lay athwart the road, blocking traffic.
倒れた木が道路を横断して、交通を妨げていた。
C2 adjective /ˈɡæŋ.ɡli/

gangly

高くて不器用
Meaning
Tall, thin, and awkward in movement or appearance.
Example
The gangly teenager stumbled while trying to dance.
不器用なティーンエイジャーはダンスしようとしたときにつまずきました。
B1 verb /ˈbrɔːdˌkæst/

broadcast

放送する
Meaning
to transmit a program or information by radio, television, or online media
Example
The match was broadcast live on television.
試合はテレビで生放送されました。
B2 verb /ˈkɑːmpənseɪt/

compensate

補償する
Meaning
to give something to make up for loss or damage; to counterbalance
Example
The company will compensate employees for overtime work.
会社は残業に対して従業員に賠償金を支払う。
C1 verb /ˈdaʊn.pleɪ/

downplay

軽視する
Meaning
to make something seem less important than it really is
Example
The company tried to downplay the risks of the new product.
会社は新しい製品のリスクを軽視しようとしました。
A2 verb /bɛɡ/

beg

お願いする
Meaning
to ask for something earnestly; to request humbly
Example
The child begged for a new toy.
その子供は新しいおもちゃをお願いしました。
A1 noun /aɪs/

Ice

氷
Meaning
water that has frozen and become solid
Example
The ice in my drink melted quickly in the hot weather.
私の飲み物の氷は暑い天気で素早く溶けました。
C2 adjective /sɪˈkweɪʃəs/

sequacious

盲目的に従う
Meaning
Lacking independence of thought; blindly following.
Example
The sequacious students never questioned their teacher's opinions.
シクウェイシャスな学生は、教師の意見に疑問を呈することはありませんでした。
C1 adjective /ɪnˈsʌf.ər.ə.bəl/

insufferable

耐え難い
Meaning
Too extreme to bear; intolerable.
Example
The heat during the summer was insufferable.
夏の暑さは耐え難かった。
C1 adjective /ədˈmɪsəbl/

admissible

Meaning
acceptable or valid, especially as evidence in a court of law
Example
The judge ruled that the document was admissible as evidence.
A2 noun /siːt/

seat

席
Meaning
a place to sit, especially a chair or other place for sitting
Example
I reserved a seat for you at the concert.
コンサートであなたのために席を予約しました。
B2 noun /ˈkaʊn.tər/

counter

カウンター
Meaning
a flat surface in a shop, bank, or kitchen where transactions or work are done
Example
The cashier stood behind the counter.
レジ係はカウンターの後ろに立っていました。
B1 noun /ˈfɔːr.tʃən/

Fortune

運; 幸運; 財産
Meaning
chance or luck as an external, arbitrary force affecting human affairs; a large amount of money or assets
Example
He made his fortune by investing wisely in technology companies.
彼はテクノロジー企業に賢明に投資することで運を得ました。
B2 noun /ˈriːteɪlər/

retailer

小売業者
Meaning
a person or business that sells goods to consumers rather than to other businesses
Example
The retailer offers discounts on electronic products.
小売業者は電子製品に割引を提供しています。
C1 noun ˈkiː.stəʊn ˈspiː.ʃiːz

keystone species

キーストーン種
Meaning
A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Example
Wolves are a keystone species that regulate prey populations.
オオカミは獲物の個体数を調整するキーストーン種です。
C1 noun /əˌsaɪˈniː/

assignee

受領者
Meaning
a person to whom a right or property is legally transferred
Example
The assignee of the contract is responsible for all future obligations.
契約のアサイニーはすべての将来の義務に責任を負います。
C1 noun /pəˈlɪɡ.ə.mi/

Polygamy

ポリガミー
Meaning
the practice of marrying multiple spouses at the same time
Example
Polygamy is illegal in many countries around the world.
ポリガミーは世界の多くの国で違法です。
B1 verb /ˈkrɪtɪsaɪz/

criticize

批判する
Meaning
to express disapproval or find fault with someone or something
Example
The teacher criticized the student's poor handwriting.
教師は学生のひどい手書きに批判を加えました。
B2 noun /ˈnuː.səns/

Nuisance

迷惑; 不便;
Meaning
a person, thing, or circumstance causing inconvenience or annoyance
Example
The constant noise from construction is a real nuisance.
建設の絶え間ない騒音は本当の迷惑です。
C1 noun /ˌtæm.bəˈriːn/

Tambourine

タンバリン
Meaning
a small drum with metal discs around the edge that jingle when shaken or hit
Example
She shook the tambourine to the rhythm of the music.
彼女は音楽のリズムに合わせてタンバリンを振った。
C1 verb /dɪˈpɔːrt/

deport

国外追放
Meaning
To expel a foreigner from a country, usually for legal or political reasons.
Example
The government decided to deport the illegal immigrants.
政府は不法移民をデポートすることを決定した。
B2 verb /əˈbændən/

abandon

放棄する
Meaning
to give up completely; to leave permanently
Example
They had to abandon their house due to flooding.
彼らは洪水のために家を放棄しなければならなかった。
C1 adjective /əˈbɪzməl/

abysmal

ひどい / 恐ろしい
Meaning
extremely bad or appalling
Example
The team's performance was abysmal.
チームのパフォーマンスはひどかった。
C2 noun /roʊˈtʌn.də.ti/

rotundity

円形
Meaning
the quality of being round or plump
Example
The rotundity of the balloon made it float gracefully.
風船の円形がそれを優雅に浮かせた。
B1 noun /ˌsɪvɪlaɪˈzeɪʃən/

civilization

文明
Meaning
the stage of human social and cultural development and organization considered most advanced
Example
Ancient Egypt is known for its remarkable civilization.
古代エジプトはその優れた文明で知られています。
A2 verb /daɪ/

die

死ぬ
Meaning
to stop living; to cease to exist
Example
The flowers will die without water.
花は水がなければ死んでしまいます。
C2 noun /ɪkˈspiːdiənsi/

expediency

便宜主義
Meaning
the quality of being convenient and practical despite possibly being improper or immoral
Example
He acted out of political expediency rather than principle.
彼は原則ではなく政治的便宜主義から行動した。
A2 adjective /liːst/

Least

最小
Meaning
smallest in amount or degree; minimal
Example
This is the least expensive option available.
これは利用可能な最も安価なオプションです。
C2 adjective /ˈɡær.ə.ləs/

Garrulous

おしゃべりな; うるさい; 話好き
Meaning
excessively talkative, especially on trivial matters; chatty and rambling in speech
Example
The garrulous old man at the coffee shop would talk for hours about his travels.
カフェでおしゃべりな年寄りの男は、旅行について何時間も話していた。