acceleration
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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。
C2 noun, adjective /ˌæntiˌspæzˈmɒdɪk/

antispasmodic

抗痙攣薬
Meaning
A drug or agent that relieves or prevents muscle spasms.
Example
The doctor prescribed an antispasmodic to ease the pain.
医者は痛みを和らげるために抗痙攣薬を処方しました。
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。
B2 noun, verb /ˈævəlæntʃ/

avalanche

Meaning
(noun) a mass of snow, ice, and rocks falling rapidly down a mountainside; a sudden overwhelming quantity; (verb) to descend like an avalanche
Example
The avalanche buried the mountain road under tons of snow.
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。
A2 verb /əˈlaʊ/

allow

許可する
Meaning
to give permission for something to happen or someone to do something
Example
The teacher did not allow phones in class.
先生はクラスで電話を許可しませんでした。
B2 noun /ˈæstərɔɪd/

asteroid

アステロイド
Meaning
A small rocky body orbiting the sun, mostly found in the asteroid belt between Mars and Jupiter.
Example
The asteroid belt lies between the orbits of Mars and Jupiter.
小惑星帯は火星と木星の軌道の間にあります。
A2 noun /ˈeər kənˈdɪʃ.ən.ər/

Air conditioner

エアコン
Meaning
a system that controls the temperature, humidity, and air quality in a building or room
Example
We turned on the air conditioner because it was too hot outside.
外が暑すぎたので、エアコンをつけました。
C2 adjective /ˈæstrəl/

astral

Meaning
Relating to the stars or to spiritual, non-physical realms.
Example
Some believe in astral projection, the ability to leave the body and travel spiritually.
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。
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。
C2 noun /ˌæŋɡləˈfoʊbiə/

anglophobia

アングロフォビア
Meaning
Dislike or fear of England, English people, or English culture.
Example
The politician was accused of promoting Anglophobia in his speeches.
その政治家は演説でアングロフォビアを促進したとして非難されました。
C2 verb /ˌæd ˈlɪb/

ad-lib

即興
Meaning
to speak or perform without preparation; to improvise
Example
The comedian ad-libbed a joke when the microphone failed.
コメディアンはマイクの故障でジョークをアドリブしました。
C2 noun /ˈeɪ.pi.ˌɛr.i/

apiary

養蜂場
Meaning
A place where beehives are kept, especially for commercial purposes.
Example
The farmer built a new apiary to produce organic honey.
農家は有機蜂蜜を生産するために新しい養蜂場を建てました。
C2 adjective /eɪˈrɪðmɪk/

arrhythmic

不整脈
Meaning
Lacking a regular rhythm or beat.
Example
The patient had an arrhythmic heartbeat.
患者は不整脈を持っていた。
C2 adjective /ˈæb.ə.rənt/

aberrant

異常
Meaning
deviating from what is normal or expected; abnormal
Example
His aberrant behavior shocked everyone at the meeting.
彼の異常な行動は会議で誰もが驚かせた。
C2 verb /əˈɡriːv/

aggrieve

傷つける
Meaning
to cause distress or make someone feel resentful
Example
She felt aggrieved by the unfair decision.
彼女は不公平な決定に心を痛めていた。
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。
B1 noun /ədˌmɪn.ɪˈstreɪ.ʃən/

Administration

行政; 管理
Meaning
the process of managing or organizing something; a government or organization
Example
The university administration announced new policies.
大学の行政は新しいポリシーを発表しました。
B2 adjective /ˌæksɪˈdɛntl/

accidental

偶然の
Meaning
happening by chance, unintentionally
Example
The fire was caused by an accidental spark.
火事は偶然の火花によって引き起こされました。
C2 adjective /ɔːˈrɔːrəl/

auroral

オーロラに関連する
Meaning
Relating to or resembling the aurora, especially the northern lights.
Example
The scientists observed auroral activity in the night sky.
科学者たちは夜空でオーロラルの活動を観察しました。
C2 adverb /əˈsɪdʒuəsli/

assiduously

熱心に
Meaning
with great care and persistence
Example
He worked assiduously to complete the project before the deadline.
彼は締め切り前にプロジェクトを完了するために熱心に働きました。
C2 noun ˌæm.ɔː.tɪˈzeɪ.ʃən

amortization

償却
Meaning
The process of paying off debt with regular payments over time.
Example
The amortization schedule showed a 10-year repayment plan.
アモチゼーションスケジュールは10年間の返済計画を示しました。
C1 adjective /ˈædʒ.aɪl/

agile

素早く柔軟
Meaning
able to move quickly and easily; quick and adaptable in thinking or action
Example
The startup team was agile in responding to market changes.
スタートアップチームは市場の変化に迅速に対応しました。
C2 adjective /ænˈdrɒdʒɪnəs/

androgynous

アンドロジナス
Meaning
Having both male and female characteristics; not clearly masculine or feminine.
Example
The fashion show featured models with an androgynous look.
ファッションショーではアンドロジナスなルックのモデルが登場しました。
C2 noun /əˈkʌmpənɪst/

accompanist

伴奏者
Meaning
A person who plays a musical instrument to support a singer or another musician.
Example
The pianist served as the accompanist for the singer during the concert.
コンサート中にピアニストは歌手の伴奏者として活躍しました。
A2 adverb /əˈbʌv/

Above

上に; 上方
Meaning
in or to a higher place; overhead
Example
The airplane flew above the clouds.
飛行機は雲の上を飛んでいました。
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。
B2 verb /əˈsaɪn/

assign

割り当てる
Meaning
to give someone a task, duty, or responsibility
Example
The manager will assign tasks to the new employees.
マネージャーは新しい従業員に仕事を割り当てる予定です。
B1 noun /əˈtʃiːvmənt/

achievement

達成
Meaning
Something that has been successfully completed or accomplished through effort or skill.
Example
Graduating from university was her greatest achievement.
大学を卒業することは彼女の最大の達成でした。
C1 verb əˈnaɪ.ə.leɪt

annihilate

完全に破壊する
Meaning
Destroy utterly; obliterate; reduce to nothing.
Example
The explosion annihilated the entire village.
爆発は村全体をアニヒレートしました。
C2 noun /ˈænsɛstrɪs/

ancestress

女性の祖先
Meaning
a female ancestor; a woman from whom one is descended
Example
She discovered that her ancestress came from a small village in Bengal.
彼女は自分の女性の祖先がベンガルの小さな村出身だと知った。
B2 adjective /esˈθet.ɪk/

Aesthetic

美的
Meaning
Concerned with beauty or the appreciation of beauty.
Example
Good aesthetic design enhances product appeal.
良いアスセティックデザインは製品の魅力を高めます。
C1 adjective /ˌeɪˈmɔːrəl/

amoral

アモラル
Meaning
Lacking a moral sense; unconcerned with rightness or wrongness of something.
Example
The character in the novel was portrayed as completely amoral.
小説の登場人物は完全にアモラルとして描かれた。
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。
C1 noun /ˈækəleɪd/

accolade

栄誉
Meaning
An award, honor, or expression of praise.
Example
She received an accolade for her outstanding performance.
彼女は卓越したパフォーマンスで栄誉を受けました。
A2 verb əˈdres

address

取り組む
Meaning
To deal with or tackle (a problem or issue); to focus attention on.
Example
The government must address the issues of student politics.
政府は学生政治の問題に取り組むべきです。
B2 noun /ˈɑːrtɪˌfækt/

artifact

遺物
Meaning
an object made by humans, typically of historical or cultural interest
Example
The museum displayed ancient artifacts from Egypt.
博物館はエジプトの古代のアーティファクトを展示しました。
B2 adjective /ænˈtɑːrktɪk/

antarctic

南極の
Meaning
relating to the region around the South Pole
Example
The Antarctic region is known for its extreme cold and icy landscapes.
南極地域はその極寒と氷のような景色で知られています。
A1 noun /'æn.ɪ.məl/

Animal

動物
Meaning
a living creature that feeds on organic matter, typically having specialized sense organs and nervous system and able to respond rapidly to stimuli
Example
The zoo has many different animals from around the world.
動物園には世界中から来たさまざまな動物がいます。
B2 adjective /əˈstɒnɪʃt/

astonished

驚いた
Meaning
feeling very surprised or amazed
Example
She was astonished by the magician's incredible trick.
彼女はその魔術師の信じられない手品に驚いた。
B2 noun ˈæt.rɪ.bjuːt

attribute

属性
Meaning
A quality or feature regarded as a characteristic or inherent part of someone or something.
Example
An important attribute of wood is its flexibility.
木材の重要な属性はその柔軟性です。
B2 adjective /əkˈsel.ə.reɪ.tɪd/

accelerated

加速された
Meaning
Happening or developing faster than usual.
Example
The project progressed at an accelerated pace.
プロジェクトは加速したペースで進んでいった。
A2 noun /ˈɔːtəm/

autumn

秋
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。
C1 verb /əˈtoʊn/

atone

償う
Meaning
to make amends for a wrong or injury; to make reparation
Example
He tried to atone for his mistakes by helping others.
彼は他の人を助けることで自分の過ちを償おうとした。
C1 adverb /iːsˈθetɪkli/

aesthetically

美的に
Meaning
in a way that is concerned with beauty or visual appeal
Example
The building is aesthetically pleasing despite its simple design.
その建物はシンプルなデザインにもかかわらず美的に魅力的です。
A2 noun /ˌænɪˈvɜːrsəri/

anniversary

記念日
Meaning
the yearly recurrence of a date marking a past event
Example
They celebrated their wedding anniversary with a dinner.
彼らは結婚記念日をディナーで祝いました。
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。
C2 noun /ˈɑːrkeɪˌɪzəm/

archaism

古語
Meaning
a word, expression, or style of language that is no longer in everyday use
Example
The poem is full of archaisms that give it an old-fashioned flavor.
その詩は古語で満たされており、それが古風な味わいを与えています。
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。
B2 adjective /əˈdɪktɪd/

addicted

中毒
Meaning
Being unable to stop engaging in a particular activity or consuming a particular substance.
Example
Many people are addicted to social media.
多くの人々がソーシャルメディアに中毒しています。
A1 noun /ˈɛər.pɔːrt/

airport

空港
Meaning
A place where airplanes take off and land, with buildings for passengers and cargo.
Example
We arrived at the airport two hours before the flight.
私たちはフライトの2時間前に空港に到着しました。
C1 noun /ədˈhɪərənt/

adherent

支持者
Meaning
a person who supports or follows a particular belief, cause, or leader
Example
He is a strong adherent of democratic values.
彼は民主的な価値観の強力な支持者です。
C1 noun /əˈpɒlədʒɪst/

apologist

擁護者
Meaning
a person who defends or justifies something, often a controversial belief or institution
Example
He is known as an apologist for authoritarian regimes.
彼は権威主義的な政権の擁護者として知られています。
C1 verb /əˈflɪkt/

afflict

苦しめる
Meaning
to cause pain, suffering, or distress to someone or something
Example
Many people are afflicted by seasonal allergies.
多くの人々が季節性アレルギーに悩まされています。
B2 noun ˌæd.æpˈteɪ.ʃən

adaptation

適応
Meaning
The action or process of adapting or being adapted.
Example
Adaptation to climate change is critical for resilience.
気候変動への適応は回復力にとって重要です。
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。
C1 verb /ˈæbdɪkeɪt/

abdicate

放棄する
Meaning
To give up a position of power or responsibility, especially a throne.
Example
The king decided to abdicate the throne.
王は王位を放棄することに決めました。
B2 adverb /ˈænjuəli/

annually

年次
Meaning
once every year; yearly
Example
The company holds a general meeting annually.
その会社は毎年年次総会を開きます。
C1 adjective /əˈwɒʃ/

awash

水浸し
Meaning
covered or flooded with water or something in large quantities
Example
The market was awash with cheap imported goods.
市場は安価な輸入品で水浸しだった。
C1 adjective /əˈtjuːnd/

attuned

敏感な / 調和のとれた
Meaning
Being receptive or sensitive to something; well adjusted or in harmony.
Example
She is attuned to the needs of her students.
彼女は学生のニーズに敏感です。
B1 noun /ˈæbsəns/

Absence

欠席
Meaning
the state of being away from a place or person; lack or non-existence
Example
His absence from the meeting was noticed by everyone.
会議への彼の欠席は皆に気づかれました。
B1 noun /əˈpruː.vəl/

approval

承認
Meaning
official permission or agreement for something
Example
The project received government approval.
そのプロジェクトは政府の承認を得た。
B1 adverb /əˈsaɪd/

Aside

横に; 脇に; 主な部分から離れて
Meaning
to one side; apart; away from the main part
Example
Please set your book aside and listen to me.
本を脇に置いて、私の話を聞いてください。
B2 noun /əˈlaɪnmənt/

alignment

整列
Meaning
arrangement in a straight line or in proper position
Example
The alignment of the planets was perfect for the celestial event.
惑星の整列は天体イベントのために完璧でした。
C2 adjective /ˌæm.bɪˈdɛk.strəs/

ambidextrous

両利き
Meaning
Able to use both hands equally well, or versatile in abilities.
Example
Being ambidextrous can be beneficial in sports.
両利きであることはスポーツで有利です。
B2 adjective /əkˈsɛsəbl/

accessible

アクセス可能
Meaning
easy to reach, use, or understand
Example
The museum is easily accessible by public transport.
その博物館は公共交通機関で簡単にアクセス可能です。
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。
B2 adverb /ˈæk.jə.rət.li/

Accurately

正確に、間違いなく、適切に
Meaning
in an exact way, without any mistakes; precisely; correctly
Example
She accurately predicted the outcome of the election.
彼女は選挙結果を正確に予測した。
C2 noun /ˈæltruɪst/

altruist

利他的な人
Meaning
a person who has an unselfish concern for the welfare of others
Example
He is an altruist who always puts others' needs before his own.
彼は常に他人のニーズを自分のニーズよりも優先する利他的な人です。
C2 verb /əˈdʌltəreɪt/

adulterate

不正混入
Meaning
to make something poorer in quality by adding another substance, usually of lower quality
Example
The company was fined for adulterating its products with cheap chemicals.
その会社は安価な化学物質で製品をアダルテレートしたため、罰金を科せられました。
B2 adverb /ˌæksɪˈdɛntəli/

accidentally

偶然に
Meaning
happening by chance or unexpectedly
Example
He accidentally dropped the glass.
彼はうっかりグラスを落としてしまった。
C1 noun /əˈstuːt.nəs/

astuteness

洞察力
Meaning
The ability to accurately assess situations or people and turn this to one's advantage.
Example
His astuteness helped in negotiations.
彼の洞察力は交渉で役立った。
C1 noun, adverb /ˈeɪliəs/

alias

別名
Meaning
A false or assumed identity; also used to mean 'otherwise called'.
Example
The criminal was known by the alias 'Shadow'.
その犯罪者は『シャドウ』という別名で知られていた。
C2 adjective /əˈbɔːrtɪv/

abortive

失敗した
Meaning
Failing to produce the intended result; unsuccessful.
Example
Their abortive attempt to climb the mountain ended in retreat.
彼らの山登りの試みは、撤退で終わった。
C2 noun /ænˈtɪstrəfi/

antistrophe

アンチストロフィー (修辞法の一つ)
Meaning
A rhetorical device in which a word or phrase is repeated at the end of successive clauses; in Greek choral poetry, the part of the ode sung by the chorus in return movement.
Example
The poet used antistrophe to emphasize the repeated phrase.
詩人は繰り返されるフレーズを強調するためにアンチストロフィーを使用しました。
B2 noun /ˌæbəˈlɪʃən/

abolition

廃止
Meaning
the act of formally ending or eliminating a system, practice, or institution
Example
The abolition of slavery was a major milestone in human rights history.
奴隷制度の廃止は人権の歴史における重要な節目でした。
B1 verb /əˈpruːv/

approve

承認する
Meaning
to officially agree to or accept something; to give permission
Example
The committee will approve the new policy tomorrow.
委員会は明日新しい方針を承認します。
C2 verb /əˈdjuːs/

adduce

証拠や理由を提供する
Meaning
To provide evidence or reasons to support an argument or idea.
Example
The lawyer adduced several examples to support his case.
弁護士は自分のケースを支持するためにいくつかの例を挙げた。
C1 noun /əˈpærəl/

apparel

衣服
Meaning
Clothing, especially formal or special clothes.
Example
The store specializes in wedding apparel.
その店は結婚式の衣服を専門に扱っています。
C2 noun /ˈɑːrɡoʊ/

argot

専門用語
Meaning
the specialized vocabulary or jargon of a particular group, especially one with a common interest or occupation
Example
The thieves communicated in an argot that outsiders could not understand.
泥棒たちは外部の人々が理解できないアルゴでコミュニケーションを取った。
C2 noun /ˈæntiˌkraɪst/

antichrist

反キリスト
Meaning
A person regarded as the supreme opponent of Christ, often seen as a figure of ultimate evil.
Example
Some people fear the rise of an Antichrist in the future.
一部の人々は未来に反キリストが現れることを恐れている。
C1 adjective ɔːˈspɪʃ.əs

auspicious

縁起が良い
Meaning
Favorable or bringing good luck and success
Example
The wedding was held on an auspicious day.
結婚式は縁起の良い日に行われました。
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。
B1 verb /əˈdæpt/

adapt

適応する
Meaning
to adjust or change something to suit new conditions or situations
Example
He quickly adapted to the new environment.
彼はすぐに新しい環境に適応しました。
C1 adjective, noun /ɔːɡˈzɪliəri/

auxiliary

補助的
Meaning
(adjective) providing supplementary or additional help and support; (noun) a person or thing that provides auxiliary support
Example
The hospital has an auxiliary power generator in case of emergencies.
病院には緊急時用の補助電力発電機があります。
B2 adverb /əˈproʊpriətli/

appropriately

適切に
Meaning
in a way that is suitable or proper for a particular situation
Example
She was dressed appropriately for the event.
彼女はイベントに適切に服を着ていました。
B2 adjective /æbˈnɔːr.məl/

abnormal

異常な
Meaning
deviating from what is normal or usual, typically in a way that is undesirable
Example
The doctor noticed an abnormal growth in the patient’s lung.
医者は患者の肺に異常な成長を見つけました。
B1 noun /əˌkɒm.əˈdeɪ.ʃənz/

accommodations

宿泊施設
Meaning
Lodging; room and board; places to stay.
Example
The students had proper accommodations.
学生たちは適切な宿泊施設を持っていた。
B1 noun, adjective, gerund /ˈæk.tɪŋ/

acting

演技
Meaning
the art or profession of performing in plays, films, or television; temporary performance of duties; the process of performing an action
Example
She is studying acting to become a professional actress.
彼女はプロの女優になるために演技を勉強しています。
B2 noun /əˈdʒʌstmənt/

adjustment

Meaning
a small change made to improve something or make it work better
Example
The doctor made an adjustment to the patient’s medication.
B2 noun əˈʃɔː.rəns

assurance

保証
Meaning
A positive declaration intended to give confidence; a promise.
Example
Assurance of quality is a priority for the council.
品質の保証は委員会の優先事項です。
B2 verb /əˈlɛdʒ/

allege

主張する
Meaning
to claim or assert something, typically without proof
Example
The witness alleged that the man was at the crime scene.
証人はその男性が犯罪現場にいたと主張した。
C2 noun /ˌæbsəˈluːʃən/

absolution

免罪
Meaning
formal release from guilt, obligation, or punishment
Example
The priest granted him absolution for his sins.
神父は彼の罪を許しを与えました。
C2 verb /əˈpraɪz/

apprise

知らせる
Meaning
to inform or notify someone
Example
The manager will apprise the staff of the new policies.
マネージャーはスタッフに新しい方針について知らせます。
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。
C2 noun /əˈnjuː.ɪ.ti/

annuity

年金
Meaning
a fixed sum of money paid to someone each year, typically for the rest of their life
Example
She receives an annuity from her late husband's insurance policy.
彼女は故夫の保険契約から年金を受け取っています。
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。
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。
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。
C2 noun /əˈmɛrɪkəˌnɪzəm/

americanism

Meaning
A word, phrase, or practice characteristic of American English or culture.
Example
The term 'sidewalk' is an Americanism, while 'pavement' is used in British English.
C1 noun /ˈeɪ.peks/

apex

頂点, apex
Meaning
The highest point or peak of something; the top or summit.
Example
He reached the apex of his career.
彼は自分のキャリアの頂点に達した。
B2 adjective /ˈædmərəbəl/

Admirable

賞賛に値する
Meaning
প্রশংসনীয়; চমৎকার;
Example
Her dedication to helping others is truly admirable.
彼女の他人を助ける献身は本当に賞賛に値します。
A2 noun /ænt/

Ant

アリ
Meaning
a small insect that lives in organized colonies and is known for hard work
Example
The ant carried a crumb that was twice its size.
アリは自分のサイズの2倍のパンくずを運びました。
C1 adjective /ˈæʃən/

ashen

青白い
Meaning
Very pale in appearance, often due to shock, fear, or illness.
Example
His face turned ashen when he heard the terrible news.
彼は恐ろしいニュースを聞いたとき、顔が青白くなった。
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.
B2 noun əˈmend.mənts

amendments

修正案
Meaning
Changes or additions made to improve a text, law, or constitution.
Example
Amendments reflect evolving public needs.
修正案は進化する公共のニーズを反映しています。
C2 noun /ˈæntɪkwɛri/

antiquary

骨董品商
Meaning
A person who studies, collects, or deals in antiques or ancient objects.
Example
The antiquary spent years collecting rare manuscripts from the medieval period.
アンティクアリーは中世の貴重な手稿を集めるのに何年も費やしました。
C1 adjective /ˈeɪ.mi.ə.bəl/

Amiable

親しみやすくて快適; 良い性格の; 親切
Meaning
friendly and pleasant; good-natured; kind
Example
My neighbor is very amiable and always greets everyone warmly.
私の隣人はとても親しみやすく、いつも暖かく挨拶をします。
A1 conjunction /ænd/

and

と
Meaning
Used to connect words or sentences that are to be taken jointly.
Example
She bought apples and oranges.
彼女はリンゴとオレンジを買いました。
B2 adjective /əˈfekʃənət/

Affectionate

愛情深い; 思いやりのある; 優しい; 愛情を示す
Meaning
loving; caring; tender; showing affection
Example
She is very affectionate towards her children.
彼女は子供たちにとても愛情深いです。
C2 noun /əˈbluːʃən/

ablution

アブリューション
Meaning
the act of washing oneself, often for religious purposes
Example
He performed his morning ablution before the prayer.
彼は祈りの前に朝のアブリューションを行った。
C1 adjective /ˌeɪθiˈɪstɪk/

atheistic

無神論的
Meaning
Relating to or characteristic of atheists or atheism.
Example
She grew up in an atheistic household with no religious rituals.
彼女は宗教的な儀式のない無神論的な家庭で育ちました。
B2 adjective /əˈten.tɪv/

Attentive

注意深い; 用心深い; 観察力のある
Meaning
careful to pay attention; alert and observant
Example
The attentive student listened carefully to every word the teacher said.
注意深い学生は、教師が言ったすべての言葉に注意深く耳を傾けました。
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。
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 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。
C2 noun /əˈrɔɪ.oʊ/

arroyo

乾いた小川
Meaning
A dry creek or stream bed that temporarily fills with water after heavy rain.
Example
After the storm, the arroyo quickly filled with rushing water.
嵐の後、小川は急速に水で満たされました。
C1 adjective /ænˈtɪriər/

anterior

前部の
Meaning
Situated at or toward the front; coming before in position or time.
Example
The anterior part of the brain controls logical thinking.
脳の前部は論理的思考を制御します。
C2 noun /əˈspær.ə.ɡəs biːn/

Asparagus bean

アスパラガス豆
Meaning
a long, thin green vegetable pod that grows on vines; also known as yard-long bean
Example
The asparagus bean grows up to three feet long and is commonly used in Asian cooking.
アスパラガス豆は最大で三フィートの長さになり、アジア料理で一般的に使用されます。
B2 noun ədˈvɜː.sɪ.ti

adversity

逆境
Meaning
Difficulties; misfortune; a difficult or unpleasant situation.
Example
He remained strong in the face of adversity.
彼は逆境に直面しても強さを保った。