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A1 adjective /ˈeɪbl/

able

できる
Meaning
having the power, skill, or means to do something
Example
She is able to speak three languages fluently.
彼女は三言語を流暢に話すことができます。
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 /əˈsɛndənsi/

ascendancy

優位, 支配
Meaning
A position of power, influence, or control over others.
Example
The company gained ascendancy in the market through innovation.
その会社は革新を通じて市場で優位を獲得しました。
C2 noun/adjective /ˈæl.əˌbæs.tər/

alabaster

アラバスター（白い鉱物）
Meaning
A fine-grained, usually white variety of gypsum, often used for carving; also describes something smooth and pale like alabaster.
Example
The statue was carved from pure alabaster.
その像は純粋なアラバスターで彫られました。
C2 adjective /əˈɡeɪp/ or /əˈɡɑːp/

agape

驚愕
Meaning
With the mouth wide open in surprise or wonder.
Example
She stood agape at the breathtaking view.
彼女は息を呑むような景色に驚いて口を開けたまま立っていた。
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。
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。
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。
A1 article /æn/

an

一つの（不定冠詞）
Meaning
used before a noun to refer to a non-specific item that begins with a vowel sound
Example
She ate an apple for breakfast.
彼女は朝食にリンゴを一つ食べた。
C1 adverb /ˈæmpli/

amply

十分に
Meaning
more than sufficiently; generously
Example
She was amply rewarded for her hard work.
彼女は努力の結果、十分に報われました。
C1 verb /ˈæk.lɪ.meɪt/

acclimate

順応する
Meaning
To adapt or become accustomed to a new environment or situation
Example
It takes time to acclimate to a new climate.
新しい気候に順応するには時間がかかります。
B2 noun əˈmendmənt

amendment

修正案
Meaning
A minor change in a document.
Example
The amendment was not supported.
その修正案は支持されませんでした。
C1 adjective /ˌæbəˈrɪdʒənəl/

aboriginal

先住民
Meaning
Relating to the original inhabitants of a region.
Example
The museum has a large collection of aboriginal art.
博物館には先住民のアートの大きなコレクションがあります。
C1 verb /ˈædʒ.ɪ.teɪt/

agitate

扇動する, 激しくする
Meaning
to stir up feelings or disturb; to campaign for change
Example
The protesters agitated for better working conditions.
抗議者たちはより良い労働条件を求めて活動した。
C1 adjective /ˌeɪ.bəlˈbɒd.id/

able-bodied

健康な体
Meaning
physically strong and healthy, not disabled
Example
The company is looking for able-bodied workers for the construction site.
その会社は建設現場のために健康な体を持つ労働者を探しています。
B2 noun /əˈsɜːʃən/

assertion

主張
Meaning
a confident and forceful statement of fact or belief
Example
Her assertion that she was right was met with silence.
彼女の自分が正しいという主張は、沈黙とともに受け入れられました。
B2 adjective /ˈɛəri/

airy

風通しの良い
Meaning
Spacious and well-ventilated; light and breezy.
Example
The new apartment is bright and airy.
新しいアパートは明るくて風通しが良いです。
C2 noun /əˈsɛt.ɪˌsɪz.əm/

asceticism

禁欲主義, 自制
Meaning
The practice of severe self-discipline and abstaining from indulgence, typically for religious or spiritual reasons.
Example
Asceticism has been a part of many religious traditions throughout history.
禁欲主義は歴史を通じて多くの宗教的伝統の一部でした。
A1 interjection /ɑː/

ah

ああ
Meaning
used to express realization, surprise, or relief
Example
Ah, now I understand what you mean.
ああ、今あなたが言いたいことがわかりました。
C1 adverb /ˈæm.ɪ.kə.bli/

Amicably

友好的に
Meaning
in a friendly way without anger or resentment
Example
The divorce was settled amicably between both parties.
離婚は両者の間で友好的に解決されました。
C1 noun /əˌsæsɪˈneɪʃən/

assassination

暗殺
Meaning
The act of killing someone important, often for political or ideological reasons.
Example
The assassination of the president shocked the nation.
大統領の暗殺は国全体を驚かせた。
C2 adjective /eɪˈsɛfələs/

acephalous

Meaning
having no leader or head; headless
Example
The acephalous group soon fell into disorganization.
C2 verb /əˈvɜːr/

aver

断言する
Meaning
to state or assert something confidently and strongly
Example
She averred that she was innocent.
彼女は無罪だと主張した。
C2 verb /əˈbrɪdʒ/

abridge

短縮する
Meaning
to shorten a text without losing its meaning
Example
The editor decided to abridge the long novel for young readers.
編集者は若い読者のために長編小説を短縮することに決めました。
C2 adverb /əˈbæk/

Aback

驚いた
Meaning
by surprise; unexpectedly
Example
I was taken aback by his sudden announcement.
私は彼の突然の発表に驚きました。
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 verb /ˈæmbʊʃ/

ambush

待ち伏せする
Meaning
To attack suddenly and unexpectedly from a hidden position.
Example
The soldiers planned to ambush the enemy at dawn.
兵士たちは夜明けに敵を待ち伏せする計画を立てた。
A2 adjective, noun /ˈeɪʒən/

asian

アジアの
Meaning
relating to Asia or its people
Example
She loves Asian culture.
彼女はアジア文化が好きです。
C2 noun /ˈæl.mɪ.rə/

Almirah

クローゼット
Meaning
a large cupboard or wardrobe used for storing clothes and other items
Example
I keep all my clothes in the wooden almirah.
私はすべての衣服を木製のアルミラーに保管します。
C1 noun /əˈlʌmnəs/

alumnus

卒業生
Meaning
a former student or graduate of a school, college, or university
Example
He is an alumnus of Harvard University.
彼はハーバード大学の卒業生です。
B2 noun, verb /ˈædɪkt/ (noun), /əˈdɪkt/ (verb)

addict

中毒者
Meaning
a person who is unable to stop using a harmful substance or doing something harmful; to cause someone to become dependent on something
Example
He is a video game addict who spends hours playing every day.
彼は毎日何時間もゲームをするゲーム中毒者です。
C1 noun əˌkred.ɪˈteɪ.ʃən

accreditation

認定
Meaning
The action or process of officially recognizing someone or something as having a particular status or being qualified to perform a particular activity.
Example
Accreditation ensures institutional credibility.
認定は組織の信頼性を保証します。
B2 noun /æʃ/

ash

灰
Meaning
the powdery residue left after the burning of a substance
Example
After the fire, only ash remained of the house.
火事の後、家の灰だけが残った。
C2 noun /əˈsper.ɪ.ti/

asperity

Meaning
Harshness of tone, manner, or surface.
Example
She spoke with asperity when she was interrupted.
B2 adjective /əˈkaʊntəbl/

accountable

責任がある
Meaning
Required or expected to justify actions or decisions; responsible.
Example
Staying accountable helps reduce delays.
責任があることが遅延を減らすのに役立ちます。
C1 noun /ˈænti ˈeəkræft ɡʌn/

Anti-aircraft-gun

対空砲
Meaning
a weapon designed to attack aircraft from the ground
Example
The anti-aircraft gun was positioned to defend the military base.
対空砲は軍事基地を守るために配置されました。
B2 adjective əˈstaʊn.dɪŋ

astounding

驚くべき、衝撃的な、すばらしい
Meaning
Surprisingly impressive or notable; causing shock or surprise.
Example
The magician's astounding tricks left the audience speechless.
魔法使いの驚くべきトリックは観客を言葉を失わせました。
C2 noun /ˈɪəri/ or /ˈɛəri/

aery

ワシの巣
Meaning
An eagle’s nest, or a lofty, airy dwelling.
Example
The eagle perched proudly near its aery high on the cliff.
鷲は崖の上にあるその巣の近くに誇らしげに止まった。
B2 noun, verb /əˈsɔːlt/

assault

暴行
Meaning
a physical attack or to attack someone violently
Example
He was charged with assault after the fight.
喧嘩の後で暴行の罪で起訴されました。
B2 noun /ˈælkəhɒlɪzəm/

alcoholism

アルコール依存症
Meaning
A chronic disease characterized by uncontrolled drinking and preoccupation with alcohol.
Example
His alcoholism affected both his health and his family life.
彼のアルコール依存症は、彼の健康と家庭生活に影響を与えた。
C1 noun /əˈtjuːn.mənt/

attunement

調和
Meaning
Being in harmony or responsive to someone's emotional state.
Example
Attunement to emotions improves relationships.
感情への調和は関係を改善する。
C2 noun /ˌæfɛkˈteɪʃən/

affectation

Meaning
an unnatural behavior or speech intended to impress others
Example
Her British accent was just an affectation to sound sophisticated.
C2 verb /ˈɔːltərˌkeɪt/

altercate

議論する
Meaning
to argue or dispute angrily or noisily
Example
The neighbors began to altercate over the boundary wall.
隣人たちは境界の壁について議論し始めました。
C2 verb /əˈvaʊ/

avow

公然と宣言する
Meaning
to openly declare or admit something, often publicly and firmly
Example
He avowed his loyalty to the cause without hesitation.
彼はためらうことなく、彼の忠誠心をその活動に公然と誓った。
B1 verb /əˈpriːʃieɪt/

appreciate

感謝する
Meaning
to recognize the value or significance of; to be grateful for
Example
I really appreciate your help with this project.
このプロジェクトでのあなたの助けに本当に感謝しています。
B2 noun /ˌædməˈreɪʃən/

admiration

尊敬
Meaning
a feeling of respect, pleasure, or approval for someone or something
Example
She felt great admiration for her teacher’s dedication.
彼女は先生の献身に尊敬を感じた。
C1 adjective /iːsˈθɛθɪkəl/

aesthetical

美的な
Meaning
concerned with beauty or the appreciation of beauty; related to artistic taste or appearance
Example
The architect focused on the aesthetical balance of the building.
建築家は建物の美的なバランスに注目した。
C2 noun /əkˈsɛʃən/

accession

即位 / 条約の受諾
Meaning
the attainment of a position of rank or power, especially a monarch or president; the formal acceptance of an agreement or treaty
Example
The king's accession to the throne was celebrated with great ceremony.
王の即位は大きな儀式で祝われました。
B2 adjective /əˈbjuːsɪv/

abusive

虐待的 / 身体的または言葉での害を伴う
Meaning
extremely offensive or insulting; involving physical or verbal harm
Example
She left her job because of her abusive boss.
彼女は虐待的な上司のせいで仕事を辞めました。
C1 noun /əˈtoʊnmənt/

atonement

贖罪
Meaning
the act of making amends for a wrong, sin, or injury
Example
The festival was celebrated as a day of atonement.
その祭りは贖罪の日として祝われました。
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。
C1 noun /ˈæmpɛər/

ampere

アンペア
Meaning
A unit of electric current in the International System of Units (SI), symbolized as A.
Example
The current flowing through the wire is measured in amperes.
ワイヤーを流れる電流はアンペアで測定されます。
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。
B2 noun /əˈluːmɪnəm/

aluminum

アルミニウム
Meaning
a lightweight silvery metal used for making cans, foils, and other items
Example
The airplane body is made of strong but light aluminum.
飛行機の機体は強いが軽いアルミニウムで作られています。
A1 verb /æd/

add

追加する
Meaning
to join something to something else; to include
Example
Please add sugar to my coffee.
コーヒーに砂糖を加えてください。
C2 noun /əˈluː.vi.əm/

alluvium

沖積土
Meaning
Fertile soil deposited by flowing water, especially in riverbanks.
Example
The alluvium in riverbanks is highly fertile for agriculture.
川の岸辺にあるアリューヴィウムは農業に非常に肥沃です。
A2 noun ækt

act

法律
Meaning
A written law passed by a legislative body.
Example
The act was passed in 2023.
その法律は2023年に可決されました。
C2 noun /ˈækmi/

acme

頂点
Meaning
the highest point of achievement or excellence
Example
Winning the award was the acme of his career.
賞を獲得することが彼のキャリアの頂点でした。
A1 preposition, adverb /əˈlɔːŋ/

along

沿って
Meaning
moving in a constant direction on (a road, path, or surface)
Example
We walked along the river.
私たちは川沿いに歩きました。
C1 noun /ˈɑːr.sən.əl/

arsenal

兵器庫
Meaning
A collection or storage place for weapons and military equipment.
Example
The army kept its weapons in a secure arsenal.
軍隊は武器を安全な兵器庫に保管していた。
C2 verb /əˈɡrɛs/

aggress

攻撃する
Meaning
to initiate an attack or show hostile behavior
Example
The army chose not to aggress without provocation.
軍隊は挑発なしに攻撃しないことを決定しました。
C1 adjective /ˈɔː.də.bəl/

Audible

聞こえる
Meaning
able to be heard; loud enough to hear
Example
The speaker's voice was barely audible from the back of the large hall.
スピーカーの声は大きなホールの後ろからほとんど聞こえませんでした。
C1 noun /ˈævətɑːr/

avatar

アバター
Meaning
an icon or figure representing a person in digital contexts; in Hinduism, a divine incarnation
Example
She changed her social media avatar to a new cartoon image.
彼女はソーシャルメディアのアバターを新しいカートゥーン画像に変更しました。
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。
A1 adverb /ɔːlˈredi/

Already

すでに; もう; 前に
Meaning
before now; by this time; previously
Example
I have already finished my homework for today.
私は今日の宿題をすでに終わらせました。
C2 adjective /ˈæprəbəˌtɔːri/

approbatory

称賛の
Meaning
expressing approval or praise
Example
The teacher gave an approbatory nod after reading the essay.
教師はエッセイを読んだ後、称賛の意を込めてうなずいた。
C1 adjective /əˈbreɪsɪv/

abrasive

Meaning
harsh, rough, or capable of wearing down by rubbing
Example
His abrasive tone made everyone uncomfortable.
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。
C2 noun əˈkjuː.ə.ti

acuity

鋭敏さ
Meaning
Sharpness or keenness of thought, vision, or hearing.
Example
His intellectual acuity made him a brilliant scientist.
彼の知的な鋭敏さは彼を優れた科学者にしました。
B1 noun ɔːˈθɒrəti

authority

権威
Meaning
The power or right to give orders, make decisions, and enforce obedience; a person or organization having power or control.
Example
Regional authority was emphasized.
地域の権限が強調されました。
C2 adjective /əˈvʌŋkjələr/

avuncular

おじさんのように親切
Meaning
kind and friendly, like an uncle
Example
He had an avuncular manner that made everyone feel comfortable.
彼は、みんなが快適に感じるようなアヴァンクラールな態度を持っていました。
A2 adjective /əˈnɔɪɪŋ/

annoying

うるさい
Meaning
causing irritation or mild anger; bothersome or troublesome
Example
The constant noise from the street was extremely annoying.
通りからの絶え間ない騒音はとてもいらいらした。
B2 noun /ˈædvəkəsi/

advocacy

擁護
Meaning
public support for or recommendation of a particular cause or policy
Example
Her advocacy for children's rights earned her international recognition.
彼女の子どもの権利への擁護は、国際的な認知を得た。
A2 verb /əˈvɔɪd/

avoid

避ける
Meaning
To keep away from or stop oneself from doing something.
Example
He tries to avoid junk food.
彼はジャンクフードを避けようとしています。
A2 noun /ˈæk.sɪ.dənt/

accident

事故
Meaning
An unfortunate incident that happens unexpectedly and unintentionally.
Example
Safety measures aim to prevent accidents.
安全対策は事故を防ぐことを目的としています。
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。
B2 adjective /ˈæbsəluːt/

absolute

絶対
Meaning
total, complete, or without restriction
Example
The dictator had absolute power over the nation.
独裁者は国に対して絶対的な権力を持っていた。
C2 noun /ænˈtɪfəni/

antiphony

アンティフォニー
Meaning
a form of music in which two or more groups or choirs sing alternately in response to each other
Example
The cathedral's architecture was designed to enhance the effect of antiphony.
大聖堂の建築は、アンティフォニーの効果を高めるために設計されました。
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。
B2 noun /ˌæljuˈmɪniəm/

aluminium

アルミニウム
Meaning
a lightweight, silvery-white metal used widely in manufacturing and packaging
Example
Aluminium is commonly used to make cans and aircraft parts.
アルミニウムは缶や飛行機の部品に使われます。
C1 adjective /əˌpɒk.əˈlɪp.tɪk/

apocalyptic

終末的
Meaning
Describing the end of the world, or something catastrophic and disastrous.
Example
The movie depicts an apocalyptic future after a nuclear war.
映画は核戦争後の終末的な未来を描いています。
C2 noun /ˈiːsθiːt/ or /ˈɛsθiːt/

aesthete

美術愛好家
Meaning
A person who has a special appreciation of art and beauty.
Example
The aesthete admired the subtle details of the painting.
エステートは絵画の微細なディテールを賞賛していました。
B2 noun /ˈeɪ.prɪ.kɒt/

Apricot

アプリコット
Meaning
a small orange-colored fruit with a soft skin and sweet flesh
Example
The apricot tree produces sweet fruit in summer.
アプリコットの木は夏に甘い果物を実らせる。
A2 conjunction /ɔːlˈðoʊ/

although

しかし
Meaning
in spite of the fact that; even though
Example
Although it was raining, they went for a walk.
しかし、雨が降っていたが、彼らは散歩に出かけた。
C1 adjective /ˌæpəˈθɛtɪk/

apathetic

Meaning
showing or feeling little or no interest, enthusiasm, or concern
Example
He was apathetic about the outcome of the match.
C2 verb /ˈæktʃueɪt/

actuate

作動させる
Meaning
to put into action or motion; to motivate or activate
Example
The engineer actuated the machine with a simple switch.
エンジニアは簡単なスイッチで機械を作動させました。
A2 verb /əˈtrækt/

attract

引き付ける
Meaning
to cause someone to have interest or draw something towards
Example
The flowers attract bees with their bright colors.
花はその鮮やかな色で蜂を引き寄せます。
A2 verb /əˈpɒlədʒaɪz/

apologize

謝罪する
Meaning
to say sorry for something wrong you have done
Example
He apologized for being late to the meeting.
彼は会議に遅れたことを謝罪しました。
B2 noun /ˈeɪ.prən/

apron

Meaning
A protective garment worn over the front of one's clothes to keep them clean, especially while cooking.
Example
She tied an apron around her waist before cooking dinner.
B2 noun /əˈstɒnɪʃmənt/

astonishment

驚き
Meaning
Great surprise or amazement.
Example
She looked at the magician with astonishment.
彼女は魔法使いを驚きの目で見つめた。
C1 noun /ˌɔːkʃəˈnɪər/

auctioneer

競売人
Meaning
a person who conducts auctions by calling out bids and selling items to the highest bidder
Example
The auctioneer quickly raised the price as bidders competed for the painting.
競売人は入札が進む中で素早く価格を上げた。
B1 noun /ˈɔː.θər/

Author

著者
Meaning
a person who writes books, articles, or other written work
Example
The author spent three years writing her bestselling novel.
その著者は、彼女のベストセラー小説を書くのに3年を費やしました。
C1 noun /ˈæk.jʊ.mən/

acumen

鋭さ
Meaning
The ability to make good judgments and quick decisions; keenness and depth of perception.
Example
His business acumen helped the company grow rapidly.
彼のビジネス鋭さは会社の急成長を助けた。
B2 adjective /əˈdʒʌstəbəl/

Adjustable

調整可能な; 可変の; 調節できる;
Meaning
নিয়মযোগ্য; পরিবর্তন-সাধ্য; সমন্বয়যোগ্য;
Example
This chair has an adjustable height feature.
この椅子は高さが調節可能です。
C2 noun /ˈɔːlmənæk/

almanac

年鑑
Meaning
An annual publication containing calendars, weather forecasts, astronomical data, and other useful information.
Example
He consulted the almanac to check the phases of the moon.
彼は月の段階を確認するために年鑑を参照しました。
C1 noun /ˌæntɪˈsiːdənt/

antecedent

先例
Meaning
something that came before; a previous event, condition, or cause
Example
The cultural antecedents of this festival go back centuries.
この祭りの文化的な先例は何世紀も前に遡ります。
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。
C2 verb /ˈædjʊˌleɪt/

adulate

過剰に賛美する
Meaning
to praise or flatter excessively
Example
The fans adulated the actor after his performance.
ファンたちは彼のパフォーマンスの後、俳優を賛美しました。
B2 adjective /ˈæfluənt/

affluent

裕福
Meaning
having a great deal of money; wealthy
Example
She grew up in an affluent neighborhood.
彼女は裕福な地域で育ちました。
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。
B2 noun /ˈeɪkər/

acre

Meaning
a unit of land area equal to 4,840 square yards (about 4,047 square meters)
Example
The farmer owns five acres of fertile land.
B2 noun /əˈstrɒlədʒi/

astrology

占星術
Meaning
the study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs
Example
She studied astrology to understand her future.
彼女は未来を理解するために占星術を勉強した。
C2 adjective, adverb /əˈfʊt/

afoot

進行中
Meaning
In progress; happening or being prepared.
Example
There are several new projects afoot in the company.
会社にはいくつかの新しいプロジェクトが進行中です。
B1 verb /əˈmjuːz/

amuse

楽しませる
Meaning
to entertain or make someone laugh or smile; to occupy pleasantly
Example
The clown amused the children at the party.
道化師はパーティーで子供たちを楽しませた。
B2 verb /ˈæɡ.rə.veɪt/

aggravate

悪化させる
Meaning
To make a situation worse or more serious.
Example
Scratching the rash will only aggravate the condition.
発疹をかくことは、状態を悪化させるだけです。
C1 noun ˌæp.əˈreɪ.təs

apparatus

装置
Meaning
The technical equipment or machinery needed for a particular activity or purpose.
Example
The apparatus was designed to be eco-friendly.
その装置は環境に優しいように設計されました。
C1 adjective /ɑːrˈkeɪɪk/

archaic

Meaning
very old or old-fashioned; belonging to an earlier time
Example
Some laws are considered archaic and no longer relevant.
A2 verb /ˈædvərˌtaɪz/

advertise

宣伝する
Meaning
to promote or publicize a product or service
Example
They advertise their products on television.
彼らはテレビで自分たちの商品を宣伝します。
A2 noun /əˈtɛnʃən/

attention

注意
Meaning
the act of focusing on something or someone
Example
The teacher asked for the students' attention.
先生は学生の注意を求めました。
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。
B2 noun /ˈæftərˌlaɪf/

afterlife

Meaning
Life or existence that some believe continues after physical death.
Example
Many cultures have different beliefs about the afterlife.
B2 noun əˈkɔːrd

accord

協定
Meaning
An official agreement or treaty.
Example
The accord emphasized gradual progress.
協定は徐々に進展を強調しました。
B2 adjective /ænˈdʒelɪk/

angelic

天使のような
Meaning
Like or characteristic of an angel; pure, kind, or innocent.
Example
The child had an angelic smile.
その子供は天使のような笑顔をしていました。
C2 noun /əˈpɒstəsi/

apostasy

背教
Meaning
The abandonment or renunciation of a religious or political belief.
Example
His public apostasy shocked his followers.
彼の公然の背教は彼の支持者を驚かせました。
C2 adjective /ˌæntɪˈθɛtɪkəl/

antithetical

対照的な
Meaning
Directly opposed or contrasted; mutually incompatible.
Example
His views were antithetical to the values of the organization.
彼の見解は組織の価値観と真逆でした。
C1 noun /ˌæbəˈrɪdʒəniːz/

aborigines

アボリジニ
Meaning
The original inhabitants of a land, especially in Australia.
Example
The aborigines have preserved their traditions for thousands of years.
アボリジニーズは何千年もの間、彼らの伝統を守り続けてきました。
C2 noun /ˌæd.ʌmˈbreɪ.ʃən/

adumbration

ぼんやりとした前兆
Meaning
a vague foreshadowing or symbolic representation of something
Example
The play offers an adumbration of the political unrest to come.
この劇は、今後の政治的不安定のぼんやりとした前兆を示している。
A1 adverb /əˈɡoʊ/

ago

以前
Meaning
Used to indicate how long before the present something happened.
Example
I met her two years ago.
私は2年前に彼女に会いました。
C1 adjective /əˈɡrɛəriən/

agrarian

農業的
Meaning
Related to farming, agriculture, or rural land.
Example
The country’s economy is still largely agrarian.
その国の経済はまだ主に農業的です。
C1 noun /əˈsem.bli ˈseʃ.ən/

assembly session

アセンブリ セッション
Meaning
A formal meeting where representatives gather to discuss and make decisions on important matters.
Example
The assembly session discussed global challenges.
アセンブリ セッションは、世界的な課題について議論しました。
C2 noun, verb /ˈæseɪ/

assay

分析
Meaning
To test or analyze the quality, purity, or content of a substance; the act of such testing.
Example
The scientists assayed the mineral sample for gold content.
科学者たちは金の含有量を調べるために鉱物サンプルをアセイしました。