Abuse
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B2 noun /əˈbjuːs/

Abuse

虐待; 不適切な使用;
Meaning
cruel and violent treatment; improper use of something
Example
The abuse of power led to his resignation.
権力の濫用は彼の辞職を招いた。
C1 noun /əˌlɪtəˈreɪʃən/

alliteration

頭韻
Meaning
the occurrence of the same consonant sound at the beginning of words in close succession
Example
She used alliteration in her poem to add musicality.
彼女は詩の中で音楽性を加えるためにアリテレーションを使用しました。
C2 noun /əˈnɔɪnt.mənt/

anointment

塗油の儀式
Meaning
The act of anointing, usually with oil, as part of a ritual or ceremony.
Example
The anointment of the new leader was a sacred ritual.
新しいリーダーの塗油の儀式は神聖な儀式でした。
C2 noun /ˈæsənəns/

assonance

アソナンス
Meaning
the repetition of vowel sounds in nearby words in poetry or prose
Example
The poet used assonance to create a musical effect in his verse.
詩人は自分の詩の中で音楽的効果を生み出すためにアソナンスを使用しました。
C2 noun /ˈæn.ə.lɪst/

annalist

年表作成者
Meaning
A person who writes annals or records events year by year.
Example
The annalist carefully documented the events of the king's reign.
アナリストは王の統治期間の出来事を慎重に記録しました。
A1 adjective /ˈæŋ.ɡri/

Angry

怒っている; 怒った;
Meaning
feeling or showing strong displeasure; furious; irritated
Example
She was angry because someone had broken her favorite vase.
彼女は誰かが彼女のお気に入りの花瓶を壊したので怒っていた。
B2 noun /ˌænθrəˈpɒlədʒi/

anthropology

人類学
Meaning
the scientific study of humans, their societies, cultures, and development
Example
She decided to major in anthropology at university.
彼女は大学で人類学を専攻することに決めました。
C2 verb əˈtɛn.ju.eɪt

attenuate

和らげる
Meaning
To reduce the force, effect, or value of something; to make weak or thin.
Example
The medicine helps attenuate the pain.
その薬は痛みを和らげるのに役立ちます。
C1 verb /ˈɑːrbɪtreɪt/

arbitrate

仲裁する
Meaning
to settle a dispute between two parties by acting as an impartial judge
Example
The committee agreed to arbitrate the contract dispute.
委員会は契約紛争を仲裁することに同意しました。
C2 noun ˌæɡ.roʊ.iˈkɒl.ə.dʒi

agroecology

アグロエコロジー
Meaning
A scientific discipline that studies agricultural systems by applying ecological concepts and principles.
Example
Agroecology promotes eco-friendly farming.
アグロエコロジーは環境に優しい農業を促進します。
C2 verb /ˈæntɪdeɪt/

antedate

前日付け
Meaning
to be earlier in time; to assign a date earlier than the actual one
Example
The manuscript antedates the modern printing press.
その原稿は現代の印刷機よりも前の時代にあります。
C2 verb /ˌæntɪˈsiːd/

antecede

前に来る
Meaning
to come before in time or order
Example
A short introduction usually antecedes the main text.
短い紹介は通常、本文の前に来ます。
B2 noun /əˈreɪ/

array

配列、展示
Meaning
an impressive display or arrangement of things
Example
The shop displayed an array of colorful dresses.
ショップはカラフルなドレスの印象的な展示をしました。
C1 verb /əˈpɔːl/

appall

驚かす
Meaning
To shock or horrify someone with something unpleasant or bad.
Example
The cruelty of the crime appalled the entire community.
犯罪の残酷さがコミュニティ全体を驚かせた。
B2 noun /ˈækjərəsi/

Accuracy

正確さ; 精度
Meaning
the quality of being correct or precise; exactness
Example
The accuracy of the measurements is very important.
測定の正確さは非常に重要です。
C1 verb /əˈbaʊnd/

abound

豊富にある
Meaning
To exist in large numbers or amounts.
Example
Opportunities abound in the field of technology.
テクノロジーの分野では機会が豊富にあります。
C1 noun /ˈeɪθiɪzəm/

atheism

無神論
Meaning
The belief that there is no God or gods.
Example
He declared his atheism openly despite social pressure.
彼は社会的圧力にもかかわらず、自分の無神論を公に宣言した。
C1 noun /əˈstrɑː.lə.dʒər/

Astrologer

占星術師
Meaning
a person who studies astrology and makes predictions based on the positions of stars and planets
Example
The astrologer predicted good fortune in her future.
その占星術師は、彼女の未来に良い運命があると予測しました。
C1 noun /ˈædɪdʒ/

adage

格言
Meaning
a short, well-known saying that expresses a general truth or piece of advice
Example
The old adage says that honesty is the best policy.
古い格言は、正直は最良の政策だと言っています。
C2 adjective /ˈækwɪˌlaɪn/

aquiline

ワシのくちばしのような
Meaning
curved like an eagle's beak; hooked
Example
He had an aquiline nose that gave him a distinguished appearance.
彼はワシのくちばしのような鼻を持っており、それが彼に優れた外見を与えていました。
B1 noun ˈɔːdioʊ ˈlɛsənz

audio lessons

オーディオレッスン
Meaning
Educational content delivered through sound recordings, typically used for language learning and skill development.
Example
Audio lessons are useful for listening skills.
オーディオレッスンはリスニングスキルに役立ちます。
C2 adjective /ˌæk.si.əˈmæt.ɪk/

axiomatic

自明の,証明の必要のない明らかな真実
Meaning
Self-evident, obviously true without need for proof
Example
It is axiomatic that hard work leads to success.
一生懸命働くことは自明であり、成功につながります。
B2 adjective ədˈmɪn.ɪ.strə.tɪv

administrative

行政的
Meaning
Relating to the running of a business, organization, etc.; concerned with or relating to management or administration.
Example
Administrative reforms improve efficiency.
行政改革は効率を向上させます。
C1 verb /ˈæn.ɛks/

annex

併合する
Meaning
To take control of a territory and add it to one's own.
Example
The empire annexed the neighboring kingdom after the war.
帝国は戦争後、隣国を併合した。
B2 adjective /æpt/

apt

適切な
Meaning
Appropriate or suitable; having a natural tendency or quick to learn.
Example
She is an apt student who quickly understands new concepts.
彼女は新しい概念をすぐに理解できる適切な学生です。
C1 adjective /ˈɔːdəˌtɔːri/

auditory

Meaning
Relating to the sense of hearing.
Example
The lecture was designed to enhance students' auditory learning skills.
B1 noun/verb /əˈwɔːrd/

award

Meaning
a prize or recognition given for an achievement; to give a prize or recognition
Example
She received an award for her outstanding performance.
彼女は優れたパフォーマンスで賞を受けました。
B2 noun /əˈstrɒnəmər/

astronomer

天文学者
Meaning
a scientist who studies the stars, planets, and the universe
Example
The astronomer observed the new comet through his telescope.
天文学者は望遠鏡を使って新しい彗星を観察しました。
C2 noun /əˈvɪdəti/

avidity

熱意
Meaning
extreme eagerness or enthusiasm
Example
He accepted the offer with avidity.
彼は熱意を持ってその提案を受け入れました。
B1 verb /əˈsɛs/

assess

評価する
Meaning
to evaluate or estimate the nature, ability, or quality of something
Example
The teacher assessed the students' progress.
教師は学生の進捗を評価しました。
B1 adverb /ˌæbsəˈluːtli/

Absolutely

完全に; 完全に; 例外なく
Meaning
completely; totally; without exception
Example
I absolutely agree with your decision.
私はあなたの決定に完全に賛成です。
B1 adjective /eɪdʒd/

aged

年老いた
Meaning
having lived for a specified number of years; old
Example
The aged man sat in the park, watching the children play.
年老いた男は公園に座り、子供たちが遊ぶのを見ていた。
C2 noun /əˈbrɪdʒmənt/

abridgment

要約版
Meaning
A shortened version of a larger work, such as a book or speech.
Example
The publisher released an abridgment of the lengthy novel for students.
出版社は学生のために長編小説の要約版を公開しました。
C2 noun /ˌæriˈviːst/

arriviste

成金
Meaning
A person who has recently gained wealth or status but is considered arrogant or socially unsophisticated.
Example
The business world is full of ambitious arrivistes.
ビジネスの世界には野心的な成金が溢れています。
B2 noun /ˈæd.və.kət/

Advocate

弁護士
Meaning
a lawyer who represents clients in court; a person who supports or argues for a cause or policy
Example
The advocate presented strong evidence to defend his client in court.
その弁護士は法廷で彼の依頼人を弁護するために強力な証拠を提示した。
C1 noun /æbˈstrækʃən/

abstraction

抽象
Meaning
the process of forming general ideas by removing specific details; an abstract concept or idea
Example
Abstraction allows complex ideas to be represented in a simplified form.
抽象は複雑な考えを簡単な形で表現することを可能にします。
C2 adjective /əˈpɜːrtənənt/

appurtenant

附属
Meaning
Belonging to or associated with something, often used in legal/property contexts.
Example
The right of way is appurtenant to the landowner’s property.
通行権は土地所有者の財産に付随しています。
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。
B2 noun /ˈɑːrkaɪvz/

archives

アーカイブズ
Meaning
A place or collection where historical records and documents are stored.
Example
She visited the national archives to research her family history.
彼女は家族の歴史を調べるために国立アーカイブズを訪れました。
B1 noun /əˈpiːl/

Appeal

アピール; 要請; 魅力
Meaning
a serious or urgent request, typically to the public; the quality of being attractive or interesting
Example
The charity made an appeal for donations.
チャリティーは寄付を呼びかけました。
A2 verb (past tense / past participle) /əˈtræktɪd/

attracted

惹かれた
Meaning
felt interest or liking toward someone or something; was drawn by appeal or force
Example
She was attracted to the idea of studying abroad.
彼女は留学するという考えに惹かれた。
C2 adjective /ˌæn.θrə.pəˈdʒen.ɪk/

anthropogenic

人為的
Meaning
Originating in human activity; caused by humans.
Example
Climate change is largely due to anthropogenic activities.
気候変動は主に人為的な活動によるものです。
C1 noun, verb /ˈɔːtɒpsi/

autopsy

検死
Meaning
a post-mortem examination to discover the cause of death or the extent of disease
Example
The autopsy revealed that the victim had died from poisoning.
検死は、犠牲者が中毒で亡くなったことを明らかにしました。
C2 adjective /əˈkɜːrsɪd/

accursed

呪われた
Meaning
Doomed, detestable, or under a curse.
Example
The villagers avoided the accursed house on the hill.
村人たちは丘の上の呪われた家を避けていた。
A2 noun /əˈsɪstənt/

assistant

アシスタント
Meaning
a person who helps or supports another, often in a job
Example
She works as an assistant in a law firm.
彼女は法律事務所でアシスタントとして働いています。
B2 noun ɔːˈtɒnəmi

autonomy

自律
Meaning
The right or condition of self-government; freedom from external control or influence.
Example
Autonomy was a primary demand.
自律は主要な要求でした。
C2 noun /ˈæpəfθɛm/

apophthegm

短くて、機知に富んだ教育的な言葉や格言
Meaning
A short, pithy, and instructive saying or maxim.
Example
She always had a witty apophthegm to share at meetings.
彼女は会議で共有するために、いつも機知に富んだアポフテムを持っていた。
C2 noun /ˈæntɪk/

antic

ユーモア
Meaning
a playful, funny, or silly act or gesture
Example
The children laughed at the clown’s antics.
子供たちはクラウンのユーモアに笑いました。
C2 adjective /ˈædɪˌpoʊs/

adipose

脂肪の
Meaning
Relating to or consisting of animal fat; fatty.
Example
The doctor explained that the tissue was mainly adipose in nature.
医者は、組織が主に脂肪性であることを説明しました。
B1 noun /ˈæŋkəl/

ankle

足首
Meaning
the joint connecting the foot with the leg
Example
He twisted his ankle while playing football.
彼はサッカーをしているときに足首を捻った。
C2 noun /ˈiːɒn/ or /ˈiːən/

aeon

Meaning
An indefinitely long period of time; an age or eternity.
Example
Dinosaurs roamed the Earth millions of aeons ago.
C2 verb /əˈɡlɒməˌreɪt/

agglomerate

凝集する
Meaning
To collect or form into a mass or group.
Example
The dust particles began to agglomerate into larger clusters.
埃の粒子がより大きな塊に集まり始めました。
B1 noun ˈɑːkɪtektʃə(r)

architecture

建築
Meaning
The art or science of designing and constructing buildings.
Example
Ancient architecture is fascinating.
古代の建築は魅力的です。
C1 verb /əˈbriːvieɪt/

abbreviate

省略する
Meaning
To shorten a word, phrase, or text by leaving out letters or parts.
Example
We often abbreviate 'Doctor' to 'Dr'.
私たちはよく 'Doctor' を 'Dr.' に省略します。
A2 preposition /əˈmʌŋ/

among

の中で
Meaning
surrounded by; in the middle of a group
Example
He was sitting among his friends.
彼は友達の中に座っていた。
C2 noun /ˈæpədʒiː/

apogee

頂点
Meaning
the highest or most distant point; the climax or peak of something
Example
The empire reached its apogee during the 18th century.
帝国は18世紀にその頂点に達しました。
B2 noun /ˈæli/

alley

路地
Meaning
a narrow passageway between or behind buildings
Example
They walked through a dark alley to reach the main road.
彼らは暗い路地を通って、メインの道路に到達した。
C1 verb /əˈdʒɔɪn/

adjoin

隣接する
Meaning
To be next to and joined with something.
Example
Their house adjoins the park.
彼らの家は公園に隣接しています。
C1 noun /əˈduː/

ado

騒ぎ / 不必要な活動
Meaning
a fuss or unnecessary activity; trouble or difficulty
Example
Without further ado, let’s begin the ceremony.
これ以上のアドなしで、式を始めましょう。
C2 noun /ˌæpəˈzɪʃən/

apposition

同格 (並列文法)
Meaning
a grammatical construction in which two elements are placed side by side, with one explaining the other
Example
In the phrase 'my friend John,' the word 'John' is in apposition to 'my friend.'
'私の友人ジョン'というフレーズでは、'ジョン'という単語が'私の友人'とアポジションにあります。
B1 noun əˈreɪndʒmənt

arrangement

配置
Meaning
The way things are organized, positioned, or structured.
Example
The arrangement of protons in the nucleus is critical.
原子核内の陽子の配置は重要です。
A2 noun /ˈæk.ʃən/

Action

行動; アクション
Meaning
the process of doing something; something that is done
Example
We need to take action to solve this problem.
この問題を解決するために行動を起こす必要があります。
B1 adverb /ˌɔːtəˈmætɪkli/

automatically

自動的に
Meaning
without human control or intervention; done by itself
Example
The door closes automatically after you enter.
ドアは自動的に閉まります。
B1 noun /ˈɔːtəmoʊbiːl/

automobile

Meaning
a road vehicle powered by an engine, typically with four wheels
Example
He bought a new automobile last week.
彼は先週、新しい車を買いました。
B2 noun /æŋˈzaɪ.ə.ti/

anxiety

不安や神経質
Meaning
A feeling of worry, nervousness, or unease about something with an uncertain outcome.
Example
Meditation helps reduce anxiety and stress.
瞑想は不安とストレスを軽減するのに役立ちます。
C1 noun /əˈkwɪtl/

acquittal

Meaning
a judgment that a person is not guilty of the crime with which they have been charged
Example
The acquittal of the accused shocked the public.
B2 verb /əˈlaɪn/

align

整列する / 直線にする
Meaning
To arrange things in a straight line; to adjust or bring into proper relation or agreement.
Example
The manager asked the team to align their goals with the company's mission.
マネージャーはチームに目標を会社のミッションに合わせるように言いました。
B2 noun /ɔː/

awe

驚嘆
Meaning
a feeling of deep respect mixed with fear or wonder
Example
The children looked at the fireworks in awe.
子供たちは花火を驚嘆して見ていました。
C2 noun /əˈɡrɒnəmɪst/

agronomist

農学者
Meaning
A scientist who studies soil management and crop production.
Example
The agronomist suggested new methods to improve rice yields.
農学者は、米の収穫量を改善するための新しい方法を提案しました。
C2 noun /ˈɑːriə/

aria

ソロの歌唱曲
Meaning
a solo vocal piece with instrumental accompaniment, typically in an opera
Example
The soprano performed a moving aria during the second act.
ソプラノは第2幕で感動的なアリアを披露しました。
B2 adjective /əˈkuːstɪk/

acoustic

Meaning
relating to sound or the sense of hearing; not amplified by electrical means
Example
We recorded an acoustic version of the song in a quiet room.
A2 noun /əˈraɪvəl/

Arrival

到着; 到着の行為
Meaning
the action or process of arriving; the reaching of a destination
Example
The arrival of the train was delayed by two hours.
列車の到着は2時間遅れました。
A1 adverb /ˈɔːlsoʊ/

also

また
Meaning
in addition; too
Example
She sings beautifully and also plays the guitar.
彼女は美しく歌い、またギターを弾きます。
C2 adverb /əˈsʌndər/

asunder

バラバラに
Meaning
into separate parts; apart
Example
The ancient empire was torn asunder by war.
古代の帝国は戦争でバラバラにされてしまった。
C2 noun /ˈeɪʒən siː bæs/

Asian sea bass

アジアスズキ
Meaning
a large predatory fish found in coastal waters and estuaries of the Indo-Pacific region, prized for its white meat
Example
Asian sea bass is highly valued in aquaculture for its fast growth.
アジアスズキは成長が早いため、養殖業で高く評価されています。
C2 noun əˈdʒuː.dɪ.kə.tɪv ˈbɒd.i

adjudicative body

裁定機関
Meaning
An official organization that has the authority to judge disputes and make decisions.
Example
The adjudicative body deliberated on the case.
裁定機関はケースについて審議した。
C2 noun /ˌænəlˈdʒiːziə/

analgesia

鎮痛
Meaning
The inability to feel pain while still conscious.
Example
The doctor induced analgesia before performing the procedure.
医者は手術を行う前に鎮痛を誘発した。
B2 noun /ˈækni/

acne

ニキビ
Meaning
a skin condition in which pores become inflamed and clogged, causing pimples and spots
Example
Regular cleansing and a balanced diet can help reduce acne.
定期の洗浄とバランスの取れた食事は、ニキビの減少に役立ちます。
B2 verb /əˈkɒmədeɪt/

accommodate

収容する
Meaning
To provide lodging, space, or meet the needs of someone.
Example
The hotel can accommodate up to 200 guests.
ホテルは最大200人を収容できます。
C1 noun /əˈflɪkʃən/

affliction

苦しみ
Meaning
a state of pain, suffering, or distress
Example
Poverty is a common affliction in many parts of the world.
貧困は世界の多くの地域で一般的な苦しみです。
A2 verb /ˈædɪd/

added

追加された
Meaning
to join something to something else to increase its size, number, or amount
Example
She added sugar to her coffee.
彼女はコーヒーに砂糖を加えました。
C2 verb /ˈæd.ʌm.breɪt/

adumbrate

予示する
Meaning
to foreshadow or suggest something in an unclear or indirect way
Example
The report adumbrates future economic challenges.
レポートは未来の経済的な課題を暗示している。
B2 adjective /əˈfektɪd/

Affected

影響を受けた;影響を与えられた
Meaning
influenced; impacted; touched by something
Example
The flood-affected areas need immediate assistance.
洪水の影響を受けた地域は、即時の支援が必要です。
C2 noun /ˌæv.oʊˈkeɪ.ʃən/

avocation

副業
Meaning
a hobby or minor occupation pursued in addition to one's main work
Example
Painting is his avocation after office hours.
絵画はオフィスの後の彼の副業です。
C1 noun /ɔːˈdæs.ə.ti/

audacity

大胆さ
Meaning
The willingness to take bold risks; boldness or fearlessness.
Example
His audacity to question authority was admirable.
権威に異議を唱える彼の大胆さは賞賛に値した。
C1 noun /əˌfɪl.iˈeɪ.ʃən/

affiliation

提携
Meaning
The state or process of affiliating or being affiliated; a connection or association.
Example
His affiliation with the company lasted for a decade.
彼の会社との提携は10年間続いた。
C2 adjective /æmˈbroʊʒiəl/

ambrosial

神々しい
Meaning
Exceptionally pleasing to taste or smell; divine.
Example
The aroma of freshly baked bread was simply ambrosial.
焼きたてのパンの香りはまさに神々しいものでした。
C1 noun /ˈæpəθi/

apathy

無関心
Meaning
a lack of interest, enthusiasm, or concern
Example
The students showed apathy towards the new rules.
学生たちは新しいルールに無関心を示しました。
C1 adjective /ɔːˌθɒr.ɪˈteə.ri.ən/

authoritarian

権威主義者
Meaning
Demanding absolute obedience to authority; excessively controlling or strict in governance.
Example
Authoritarian parenting often limits a child's independence.
権威主義的な育児は、しばしば子供の独立性を制限します。
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。
C2 adjective /əˈmɔːrfəs/

amorphous

無定形
Meaning
Lacking a clear shape or form; without a defined structure.
Example
The plan remained amorphous and lacked concrete details.
その計画は無定形のままで、具体的な詳細が欠けていました。
B2 adjective/verb /əˈprɒksɪmət/

approximate

おおよその
Meaning
close to the actual but not exact; to estimate or calculate roughly
Example
The cost is approximate and may change later.
その費用はおおよそのもので、後で変わるかもしれません。
B2 adjective + noun অ্যাডভার্স ইমপ্যাক্ট

adverse impact

悪影響
Meaning
A negative or harmful effect or influence on something.
Example
Long screen time has an adverse impact on hand muscles.
長時間の画面の使用は手の筋肉に悪影響を及ぼします。
B2 adjective + noun ˈædvɜːrs ɪˈfekts

adverse effects

悪影響
Meaning
Negative or harmful impacts that result from an action or condition.
Example
Plastic usage has adverse effects on the environment.
プラスチックの使用は環境に悪影響を与える。
B1 adjective /ədˈvɛnʧərəs/

adventurous

冒険的な
Meaning
Willing to take risks or try out new methods, ideas, or experiences.
Example
They participated in adventurous activities like kayaking and hiking.
彼らはカヤックやハイキングなどの冒険的な活動に参加しました。
C2 noun /ˈæpəˌθɛm/

apothegm

格言, 名言
Meaning
A short, witty, and instructive saying or maxim.
Example
His speech was filled with apothegms about life and success.
彼のスピーチは人生と成功に関する格言でいっぱいでした。
B1 preposition/adverb /əˈkɔːrdɪŋ/

according

によると
Meaning
As stated by or in agreement with.
Example
According to the report, sales increased last quarter.
報告書によると、売上は前四半期に増加しました。
A2 noun /ˈɔːtəm/

autumn

Meaning
the season between summer and winter, when leaves fall from trees
Example
The trees look beautiful in autumn, with colorful leaves falling.
木々は秋に美しく見え、カラフルな葉が落ちています。
B2 verb /əˈplɔːd/

applaud

拍手する
Meaning
to show approval by clapping or expressing admiration
Example
The audience applauded the performance.
観客はパフォーマンスに拍手を送りました。
B1 noun əˈdɒp.ʃən

adoption

採用
Meaning
The process of accepting, embracing, or taking up something new, such as a practice, technology, or idea.
Example
The adoption of electric vehicles is increasing worldwide.
世界中で電気自動車の採用が増えています。
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 /ækˈtɪv.ə.ti/

Activity

活動; 行動; タスク
Meaning
something that you do for interest or pleasure, or in order to achieve a particular aim
Example
Physical activity is important for good health.
健康のために身体的な活動が重要です。
C2 verb /əˈdʒʌdʒ/

adjudge

判決する
Meaning
to consider or declare officially in a legal or formal manner
Example
He was adjudged guilty by the court.
彼は裁判所によって有罪とされました。
B2 adjective /əbˈsɜːrd/

absurd

不合理な, ばかげた
Meaning
wildly unreasonable, illogical, or inappropriate
Example
It is absurd to think that the earth is flat.
地球が平らだと思うのは不合理です。
B2 noun /əkˌseləˈreɪʃən/

acceleration

加速度
Meaning
the rate at which velocity changes over time; the act of speeding up
Example
The car showed rapid acceleration as it entered the highway.
車は高速道路に入るときに急な加速度を示した。
C1 adjective /əˈkɪn/

akin

類似した
Meaning
Of similar character or related by blood.
Example
His reaction was akin to shock.
彼の反応はショックに似ていた。
C2 adjective /əˈsɜːrbɪk/

acerbic

辛辣
Meaning
sharp, harsh, or bitter in tone or taste
Example
His acerbic comments offended many people in the meeting.
彼の辛辣なコメントは会議で多くの人々を侮辱しました。
B2 verb /əˈsend/

ascend

上昇する
Meaning
to go up or climb to a higher position; to rise
Example
The climbers will ascend the mountain at dawn.
登山者たちは夜明けに山を登るでしょう。
B2 noun /əˌdæptəˈbɪləti/

adaptability

適応性
Meaning
The quality of being able to adjust to new conditions or circumstances
Example
Adaptability to changing environments is crucial in business.
変化する環境に適応する能力はビジネスにおいて重要です。
C1 noun /əˈseɪlənt/

assailant

攻撃者
Meaning
a person who attacks another
Example
The police arrested the assailant at the scene.
警察は現場で攻撃者を逮捕しました。
A2 verb /əkˈsɛpt/

accept

受け入れる
Meaning
to receive willingly; to believe or come to recognize
Example
She decided to accept the job offer.
彼女は仕事の提案を受け入れることに決めた。
B2 adverb /ɔːˈθentɪkli/

authentically

本物らしく
Meaning
in a genuine, real, or true manner; in a way that reflects true character or origin
Example
She speaks authentically about her experiences.
彼女は自分の経験について本物らしく話す。
C2 noun /ˈɛərəˌstæt/

aerostat

エアロスタット
Meaning
A lighter-than-air craft, such as a balloon, that is lifted by gas.
Example
The military used an aerostat for surveillance over the border.
軍隊は国境監視のためにエアロスタットを使用しました。
A1 pronoun /ˈɛniˌbɒdi/

anybody

誰でも
Meaning
any person; anyone
Example
Anybody can join the club.
誰でもクラブに参加できます。
C1 adjective /ˈæntɪkweɪtɪd/

antiquated

時代遅れ
Meaning
Old-fashioned or outdated.
Example
The office still uses an antiquated filing system.
オフィスはまだ古くなったファイリングシステムを使用しています。
C2 noun, verb /əˈfrʌnt/

affront

侮辱
Meaning
An action or remark that causes outrage or offense.
Example
He took her criticism as a personal affront.
彼は彼女の批判を個人的な侮辱と受け止めた。
C2 noun /ˈændaɪərn/

andiron

木材を支える金属製のスタンド
Meaning
a metal support used in a fireplace to hold logs
Example
The logs rested on the andirons in the old fireplace.
古い暖炉のアンダイロンの上に木材が置かれていた。
C2 noun /ˈɑːrkeɪndʒəl/

archangel

Meaning
A high-ranking angel, often considered a chief messenger or leader among angels.
Example
Michael is often depicted as the most powerful archangel.
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。
C1 noun /ˌæktʃuˈæləti/

actuality

現実
Meaning
The state of existing in reality rather than in appearance or imagination.
Example
The movie was based on historical actuality.
その映画は歴史的な現実に基づいています。
C2 noun ˌæɡ.roʊˈiː.koʊˌsɪs.təm

agroecosystem

農業生態系
Meaning
An ecological system centered on agricultural activities and processes.
Example
A healthy agroecosystem improves soil fertility.
健康な農業生態系は土壌の肥沃度を改善します。