Attentively
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B2 adverb /əˈten.tɪv.li/

Attentively

注意深く
Meaning
with careful attention; in a focused manner
Example
She listened attentively to her teacher's instructions.
彼女は先生の指示を注意深く聞いた。
C2 noun /æmˈbroʊʒə/

ambrosia

神の食べ物
Meaning
The food of the gods in classical mythology; something extremely pleasing to taste or smell.
Example
The dessert was so delicious that it tasted like ambrosia.
デザートはあまりにも美味しくて、アンブロージアのような味がしました。
C2 noun /əˈspɜːr.ʒən/

aspersion

中傷
Meaning
An attack on the reputation or integrity of someone.
Example
He cast an aspersion on her character.
彼は彼女の性格に中傷をしました。
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。
C2 noun /əˈkwɪtəns/

acquittance

領収書
Meaning
a written receipt acknowledging payment or discharge of a debt
Example
He demanded an acquittance after paying the loan.
彼はローンを支払った後で、領収書を要求した。
C2 adjective /eɪˈsɛfələs/

acephalous

Meaning
having no leader or head; headless
Example
The acephalous group soon fell into disorganization.
C1 noun ˈælərdʒən

allergen

アレルギー反応を引き起こす物質
Meaning
A substance that causes an allergic reaction.
Example
Pollen is a common allergen that affects many people.
花粉は多くの人々に影響を与える一般的なアレルゲンです。
C1 noun /ˌænθrəˈpɒlədʒɪst/

anthropologist

人類学者
Meaning
a person who studies human societies, cultures, and their development
Example
The anthropologist spent years studying the tribal community.
人類学者は部族コミュニティを研究するのに何年も費やしました。
C2 noun /ˈɑːrbərɪˌkʌltʃər/

arboriculture

樹木栽培
Meaning
the cultivation and management of trees and shrubs
Example
He studied arboriculture to improve urban green spaces.
彼は都市の緑地を改善するために樹木栽培を学びました。
A1 verb /ˈænsər/

answer

答える
Meaning
to respond to a question; to reply; to solve
Example
She will answer the phone when it rings.
彼女は電話が鳴ったら電話に出ます。
B1 noun /ˈæksɛnt/

accent

アクセント
Meaning
a distinctive way of pronouncing a language, especially one associated with a particular country or region
Example
She spoke English with a strong French accent.
彼女は強いフランス語のアクセントで英語を話しました。
C2 noun /ˈæn.əlz/

annals

年鑑
Meaning
Historical records of events, usually arranged chronologically.
Example
Her name will be remembered in the annals of science.
彼女の名前は科学の年鑑に記録されるだろう。
C1 adjective /æbˈdɑː.mə.nəl/

abdominal

腹部の
Meaning
relating to the abdomen (the part of the body between the chest and pelvis)
Example
He complained of severe abdominal pain.
彼はひどい腹痛を訴えていました。
A2 verb /əˈreɪndʒ/

arrange

並べる
Meaning
to organize or put in order; to plan or prepare
Example
She arranged the flowers in a vase.
彼女は花を花瓶に並べた。
B2 noun /əˈkɔːrdəns/

accordance

一致
Meaning
agreement or harmony with something; compliance with rules, laws, or wishes
Example
The policy was implemented in accordance with international law.
その方針は国際法に従って実施された。
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。
B2 adjective /əˈlɑːrmɪŋ/

alarming

警戒すべき
Meaning
Worrying or disturbing; causing concern or fear.
Example
The unemployment rate among youth is alarming.
若者の失業率は警戒すべきです。
C1 adjective /əˈdɒptɪv/

adoptive

養子の
Meaning
relating to the adoption of a child or the act of taking something as one’s own
Example
She grew up in a loving adoptive family.
彼女は愛情深い養子の家族で育った。
C1 adjective eɪˈsɪŋ.krə.nəs

asynchronous

非同期の
Meaning
Of or requiring a form of computer control timing protocol in which a specific operation begins upon receipt of an indication that the preceding operation has been completed.
Example
Asynchronous courses allow students to learn at their own pace.
非同期コースは学生が自分のペースで学べるようにします。
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。
C2 noun əˌten.juˈeɪ.ʃən

attenuation

減衰、減少、弱化
Meaning
The reduction of the force, effect, or value of something.
Example
The attenuation of sound waves affects communication.
音波の減衰はコミュニケーションに影響を与えます。
C2 noun /əˈreɪ.bi.ən ˈdʒæz.mɪn/

Arabian Jasmine

アラビアジャスミン
Meaning
A fragrant white flower native to South and Southeast Asia, commonly used in perfumes and religious ceremonies
Example
The Arabian jasmine filled the garden with its sweet fragrance.
アラビアジャスミンはその甘い香りで庭を満たしました。
B1 adjective /əˈsoʊsieɪtɪd/

associated

関連した
Meaning
connected or related to something or someone
Example
She is closely associated with environmental movements.
彼女は環境運動に密接に関連しています。
B2 adjective /əˈvɔɪdəbl/

avoidable

避けられる
Meaning
able to be prevented or avoided
Example
Most of the damage was avoidable with proper planning.
適切な計画があれば、ほとんどの被害は避けられた。
C1 noun /əˈdʒeɪsənsi/

adjacency

隣接性
Meaning
The state of being next to or adjoining something else.
Example
The adjacency of the two buildings made it easy to connect them.
二つの建物の隣接性は、それらを接続するのを簡単にしました。
C2 noun /ˌæk.wiˈes.əns/

acquiescence

黙示的同意
Meaning
The reluctant acceptance of something without protest.
Example
His silent acquiescence to unfair rules was surprising.
不公平なルールへの彼の黙示的な同意は驚くべきものでした。
A2 adverb /ˈæktʃuəli/

actually

実際に
Meaning
used to emphasize that something is true, especially when surprising
Example
She actually completed the project ahead of schedule.
彼女は実際に予定より早くプロジェクトを完了させた。
A2 adverb /ˈen.i.weər/

Anywhere

どこでも
Meaning
in or to any place; wherever
Example
You can sit anywhere you like in this restaurant.
このレストランでは好きな場所に座れます。
B1 adverb /əˈprɒk.sɪ.mət.li/

approximately

おおよそ
Meaning
used to show that something is almost, but not completely, accurate or exact
Example
The journey takes approximately three hours.
旅行はおおよそ3時間かかります。
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。
B1 verb /əˈtʃiːv/

achieve

達成する
Meaning
to successfully bring about or reach a desired goal or result
Example
She worked hard to achieve her dream of becoming a doctor.
彼女は医者になるという夢を達成するために一生懸命働いた。
C2 noun /ˈæmjʊlət/

Amulet

お守り; タリスマン
Meaning
an ornament or small piece of jewelry thought to give protection against evil, danger, or disease
Example
She wore a silver amulet around her neck for good luck.
彼女は幸運のために首に銀のタリスマンを身につけていました。
C1 noun /ˌɑːrtʃˈbɪʃəp/

archbishop

大司教
Meaning
A senior bishop in charge of an archdiocese in the Christian Church.
Example
The archbishop delivered a sermon to thousands of people.
アーチビショップは何千人もの人々に説教をしました。
B1 noun əˈwɛrnɪs

Awareness

認識
Meaning
Knowledge or understanding about important issues, particularly environmental conservation.
Example
Spreading awareness is essential to save butterflies.
蝶を救うために認識を広めることが重要です。
B2 noun ɑːmd ˈkɒn.flɪkt

armed conflict

武装紛争
Meaning
A contest of armed forces; warfare between opposing military forces.
Example
Armed conflict resulted in widespread devastation.
武装紛争は広範な破壊を引き起こしました。
C2 noun /ˈeɪ.pi.ə.rɪst/

apiarist

養蜂家
Meaning
a person who keeps and tends bees for honey production
Example
The apiarist collected fresh honey from the hives.
養蜂家は巣箱から新鮮な蜂蜜を集めました。
C2 verb /əˈdʒʊər/

adjure

誓約させる
Meaning
to urge or command someone solemnly, often under oath or a strong sense of duty
Example
The witness was adjured to tell the truth in court.
証人は法廷で真実を話すように命じられた。
B1 noun ədˈvɛnʧər ˈsiːkərz

Adventure Seekers

冒険者
Meaning
People who actively look for exciting and potentially risky activities or experiences.
Example
Sajek Valley is a popular destination for adventure seekers.
サジェク渓谷は冒険者にとって人気のある目的地です。
A1 noun /ɑːrt/

art

芸術
Meaning
the expression or application of human creative skill and imagination
Example
She studied art at the university.
彼女は大学で芸術を学びました。
B2 adjective /ˌɑːrkɪˈtɛktʃərəl/

architectural

建築的な
Meaning
relating to the design and style of buildings and structures
Example
The city is known for its beautiful architectural designs.
その都市は美しい建築デザインで知られています。
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。
C1 adjective /ˈɑːrɡjuəbl/

arguable

議論の余地がある
Meaning
open to debate or discussion; not certain and capable of being argued for or against
Example
It is arguable that technology has improved our quality of life.
テクノロジーが私たちの生活の質を向上させたと言うのは議論の余地がある。
B2 noun /ˈænsestər/

Ancestor

先祖
Meaning
a person, typically one more remote than a grandparent, from whom one is descended
Example
She researched her family tree to learn about her ancestors.
彼女は家系図を調べて、先祖について学びました。
B2 adjective, noun /ədˈvaɪzəri/

advisory

アドバイザリー
Meaning
(adjective) having the power to give advice but not to make sure that it is followed; (noun) an official announcement containing information or a warning
Example
The committee serves in an advisory capacity to the board of directors.
委員会は取締役会にアドバイザリーの役割を果たしています。
B2 noun (plural) /ˈɑːrtɪˌfæks/

artifacts

遺物
Meaning
objects made by humans, often of historical or cultural importance
Example
Archaeologists discovered valuable artifacts in the ruins.
考古学者たちは遺跡で貴重な遺物を発見しました。
C2 noun /əˈkriːʃən/

accretion

蓄積
Meaning
The process of growth or increase, typically by the gradual accumulation of additional layers or matter.
Example
The accretion of wealth allowed him to invest in various projects.
財産の蓄積により、彼はさまざまなプロジェクトへの投資を可能にした。
B2 verb /ˈænəlaɪz/

analyze

分析する
Meaning
to examine something in detail to understand it better or draw conclusions
Example
Scientists analyze data to discover new patterns.
科学者たちは新しいパターンを発見するためにデータを分析しています。
B2 noun ˌæn.tiˈɒk.sɪ.dənt

antioxidant

抗酸化物質
Meaning
A substance that may prevent or delay some types of cell damage by neutralizing free radicals.
Example
Green tea contains powerful antioxidants that slow aging.
緑茶には老化を遅らせる強力な抗酸化物質が含まれています。
C2 adjective /ɑːrˈbɔːr.i.əl/

arboreal

樹木に関する
Meaning
Relating to trees or living in trees; tree-dwelling.
Example
Monkeys are arboreal animals that spend most of their time in trees.
サルは樹上性の動物で、ほとんどの時間を木の上で過ごします。
C1 noun /ˈæspɪrənt/

aspirant

志願者
Meaning
a person who seeks or hopes to achieve a position of honor or advancement
Example
She is an aspirant for the university's top scholarship.
彼女は大学の最優秀奨学金の志願者です。
C2 verb /ˌænɪmədˈvɜːt/

animadvert

批判する
Meaning
To comment critically or unfavorably.
Example
The teacher animadverted on the student's careless mistakes.
教師は生徒の不注意なミスを批判しました。
C1 noun /ˈeɪ.kər.ɪdʒ/

acreage

エーカー
Meaning
An area of land measured in acres.
Example
The farmer owns a large acreage of fertile land.
農夫は広大な肥沃な土地を所有しています。
C1 noun /ˈɔːtəkræt/

autocrat

独裁者
Meaning
A ruler with absolute power.
Example
The autocrat controlled the country with an iron fist.
そのオートクラットは鉄の拳で国を支配していました。
B1 noun /ˈædvərˌtaɪzɪŋ/

advertising

広告
Meaning
the activity of producing advertisements for products or services
Example
The company spends millions on advertising every year.
その会社は毎年広告に何百万も費やしています。
C1 adjective /ˌæntiˈsleɪvəri/

antislavery

奴隷制度反対
Meaning
Opposed to the practice or system of slavery.
Example
The antislavery movement gained momentum in the 19th century.
奴隷制度反対運動は19世紀に勢いを増した。
B1 noun æmˈbɪʃ.ən

ambition

野望
Meaning
A strong desire to do or achieve something, typically requiring determination and hard work.
Example
Their ambition is to build a quantum computer.
彼らの野望は量子コンピュータを作ることです。
A2 noun əˈɡriː.mənt

agreement

契約
Meaning
A negotiated arrangement between parties as to a course of action.
Example
The agreement was accepted by all countries.
その契約はすべての国によって受け入れられました。
A2 verb /əˈtækt/

attacked

攻撃した
Meaning
physically or verbally assaulted someone or something; launched an aggressive action against a target
Example
The soldiers attacked the enemy at dawn.
兵士たちは夜明けに敵を攻撃した。
B2 noun /ˈɑːr.tɪ.zən/

Artison

職人
Meaning
a skilled craftsperson who makes things by hand
Example
The artisan created a beautiful wooden sculpture.
職人は美しい木彫りの彫刻を作りました。
B1 noun /ˈɑːrtwɜːrk/

artwork

アート作品
Meaning
a piece of art, such as a painting, sculpture, or drawing
Example
The gallery displayed an impressive artwork by a local artist.
ギャラリーは地元のアーティストによる印象的なアート作品を展示しました。
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 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。
B1 verb /əˈlɑːrm/

alarm

驚かせる
Meaning
to warn of danger; to frighten or disturb
Example
The loud noise alarmed the residents.
大きな音が住民を驚かせた。
A2 adjective /əˈveɪləbl/

available

利用可能
Meaning
Able to be used, obtained, or accessed.
Example
The product is now available in all stores.
その製品はすべての店舗で利用可能です。
C1 adjective/adverb /əˈmɪs/

amiss

間違った
Meaning
Not quite right; inappropriate or out of place.
Example
Something seems amiss with the car's engine.
車のエンジンに何か間違ったことがあるようです。
C1 adjective /ˈæmərəs/

amorous

情熱的
Meaning
Showing, feeling, or relating to romantic love or desire.
Example
He sent her an amorous letter filled with declarations of love.
彼は愛の宣言でいっぱいのアモロスな手紙を彼女に送った。
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 /əˈpiːz/

appease

なだめる / 満たす
Meaning
to calm or pacify someone by meeting their demands
Example
The manager tried to appease the angry customer.
マネージャーは怒っている顧客をなだめようとしました。
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。
B1 noun /əˈsɪstəns/

Assistance

援助; 支援
Meaning
the action of helping someone with a job or task; support
Example
She offered her assistance with the project.
彼女はプロジェクトで援助を提供しました。
B1 adverb /ˈæŋɡrɪli/

angrily

怒って
Meaning
in a manner showing anger or strong displeasure
Example
She spoke angrily when she heard the news.
彼女はその知らせを聞いて怒って話した。
C1 adjective /əˈluːf/

aloof

距離を置いた
Meaning
Not friendly or forthcoming; cool and distant.
Example
He remained aloof during the entire discussion.
彼は議論の間ずっと距離を置いていました。
B2 noun /əˈtɒm.ɪk ˈhæb.ɪts/

atomic habits

アトミック・ハビッツ
Meaning
Small but powerful habits that can bring big changes over time
Example
Developing atomic habits leads to long-term success.
アトミック・ハビッツを育むことが長期的な成功に繋がる。
A1 noun /eər/

Air

空気
Meaning
the invisible gaseous substance surrounding the earth; a mixture mainly of oxygen and nitrogen
Example
Fresh air is essential for good health.
新鮮な空気は健康に不可欠です。
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。
A2 preposition /əˈɡɛnst/ or /əˈɡeɪnst/

against

Meaning
In opposition to; contrary to; touching or resting on.
Example
They voted against the proposal.
C2 noun /ˈæntɪˌtʃeɪmbər/

antechamber

待合室
Meaning
a small room serving as an entry to a larger one
Example
The guests waited in the antechamber before being admitted to the hall.
ゲストはホールに入る前に待合室で待っていました。
C2 adjective /ˈæʒər/

azure

空色
Meaning
A bright blue color like that of a clear sky.
Example
The clear sky was painted in a deep shade of azure.
澄んだ空は深い空色で塗られていました。
C2 noun /ˈɔːspɪs/

auspice

兆し, 保護
Meaning
A sign, omen, or divine token; also refers to protection or support.
Example
The project was launched under the auspice of the government.
そのプロジェクトは政府の保護のもとで開始されました。
A2 adjective, adverb, interjection /ɔːlˈraɪt/

alright

大丈夫
Meaning
satisfactory or acceptable; safe or unharmed; used to express agreement or acknowledgment
Example
Everything is going to be alright.
すべて大丈夫です。
C1 noun /ˈɑːrməri/

armory

武器庫
Meaning
A place where weapons are stored; a supply of resources or skills.
Example
The soldiers kept their weapons in the armory.
兵士たちは武器を武器庫に保管していた。
C2 noun /ˌæntɪˈtɒksɪn/

antitoxin

抗毒素
Meaning
A substance that neutralizes a specific toxin in the body.
Example
The doctor administered an antitoxin to counter the snake venom.
医師は蛇の毒を無効にするために抗毒素を投与しました。
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。
B1 verb /əˈproʊtʃ/

approach

近づく / 解決する
Meaning
to move closer to someone or something; to deal with a situation or problem
Example
The teacher approached the student to offer help.
教師は学生に近づいて助けを申し出た。
C2 noun /ænˈtɪpədiːz/

antipodes

Meaning
places on opposite sides of the Earth; also refers to things that are direct opposites
Example
Australia and Britain are often considered antipodes of each other.
B1 noun /əˌkɒməˈdeɪʃən/

Accommodation

宿泊施設
Meaning
a room, group of rooms, or building in which someone may live or stay
Example
The hotel provides comfortable accommodation for tourists.
ホテルは観光客のために快適な宿泊施設を提供します。
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。
B2 verb /ænˈtɪsɪˌpeɪt/

anticipate

予期する
Meaning
to expect or look forward to something; to realize or foresee in advance
Example
We anticipate a large crowd at the event.
イベントには大勢の人が来ると予想しています。
C1 noun /əˈboʊd/

abode

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

aye

賛成
Meaning
an affirmative vote or expression of agreement
Example
The committee voted aye on the proposal.
委員会は提案に賛成票を投じました。
B1 verb /əˈweɪk/

awake

目を覚ます
Meaning
to stop sleeping; to become conscious or alert
Example
I awake every morning at six o'clock.
私は毎朝6時に目を覚ます。
B2 noun /ˈæŋkər/

Anchor

アンカー
Meaning
a heavy object used to moor a vessel to the sea bottom; a person or thing that provides stability or confidence
Example
The ship dropped its anchor in the harbor.
船は港にアンカーを下ろしました。
C1 noun /ˌæntɪˈsiːdənts/

antecedents

先例
Meaning
previous events, conditions, or people that influence or serve as a basis for something that follows
Example
The lawyer examined the criminal antecedents of the suspect.
弁護士は容疑者の犯罪歴を調べました。
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。
C1 noun /ˌænəsˈθetɪk/

anesthetic

麻酔薬
Meaning
A substance that causes loss of sensation or consciousness, especially used during surgery.
Example
The doctor administered a local anesthetic before stitching the wound.
医者は傷を縫う前に局所麻酔を施しました。
C2 adjective /əˈpɒ.krɪ.fəl/

apocryphal

疑わしい
Meaning
Of doubtful authenticity, though widely circulated as true.
Example
The story about him saving the village is probably apocryphal.
彼が村を救ったという話は、おそらく疑わしい。
B2 verb /əˈkweɪnt/

acquaint

親しくする
Meaning
to make someone familiar with something; to inform or introduce
Example
Please acquaint yourself with the safety guidelines before operating the machine.
機械を操作する前に、安全ガイドラインを確認してください。
B2 noun ˈæn.ɪk.doʊt

anecdote

スピーチや文章で使われる短くて興味深い話
Meaning
A short interesting story used in speeches or writing.
Example
A well-placed anecdote makes a speech more relatable.
適切に配置されたエピソードは、スピーチをより関連性のあるものにします。
C2 adjective, adverb /əˈbʌvˌbɔːrd/

aboveboard

正直でオープン
Meaning
Open and honest; without deception or trickery.
Example
The business deal was completely aboveboard.
ビジネス取引は完全に正直でオープンでした。
C1 noun əˈpreɪ.zəl

appraisal

評価
Meaning
An assessment or evaluation of performance or quality.
Example
The annual appraisal determines salary increments.
年間の評価は給与の増加を決定します。
C2 noun əˈlæk.rə.t̬i

alacrity

迅速で楽しい準備
Meaning
Brisk and cheerful readiness.
Example
He accepted the challenge with alacrity.
彼はアラクリティで挑戦を受け入れた。
B1 noun /ˈæŋɡl/

angle

角度
Meaning
The space between two intersecting lines or surfaces at the point where they meet.
Example
The teacher explained how to measure an angle in geometry.
先生は数学で角度を測る方法を説明しました。
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。
C1 verb /ɔːˈθɛntɪkeɪt/

authenticate

認証する
Meaning
To prove or show that something is genuine or true.
Example
The bank uses advanced technology to authenticate online transactions.
銀行はオンライン取引を認証するために高度な技術を使用しています。
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。
C2 noun /ˈɑːrbɪtər/

arbiter

仲裁者
Meaning
a person who has the authority to settle a dispute or decide an issue
Example
The principal acted as the arbiter in the conflict between the students.
校長は生徒間の対立で仲裁者として行動した。
C2 noun /ˈæpəplɛksi/

apoplexy

脳卒中や極端な怒りによる突然の意識喪失や制御の喪失
Meaning
A sudden loss of consciousness or control due to stroke or extreme anger.
Example
The old man nearly had apoplexy when he heard the shocking news.
その老人は衝撃的なニュースを聞いてほとんどアポプレキシーを起こしました。
C2 adjective /ˈæfərənt/

afferent

求心
Meaning
carrying impulses toward a central organ or part, especially toward the brain or spinal cord
Example
Afferent nerves carry signals from the body to the brain.
求心神経は体から脳に信号を運びます。
B2 verb /əˈkʌstəm/

accustom

慣れる
Meaning
to make someone familiar with something through regular experience or use
Example
It took him a while to accustom himself to the new environment.
新しい環境に慣れるのに少し時間がかかりました。
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 noun /ˈɑːrtləsnəs/

artlessness

素朴さ, 自然さ
Meaning
The quality of being natural and simple without deceit or pretension.
Example
Her artlessness made her beloved by all.
彼女のartlessnessは、彼女をみんなに愛される存在にした。
C1 adjective ɔːɡˈmen.tɪd

augmented

拡張された、改善された、広げられた
Meaning
having been made greater in size or value.
Example
The new software provided augmented reality features.
新しいソフトウェアは拡張現実の機能を提供しました。
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。
B2 noun /ˈæftərˌlaɪf/

afterlife

Meaning
Life or existence that some believe continues after physical death.
Example
Many cultures have different beliefs about the afterlife.
C1 noun /ˈæptɪˌtjuːd/

aptitude

適性
Meaning
a natural ability or talent to do something well
Example
She has a strong aptitude for learning new languages.
彼女は新しい言語を学ぶのに強い適性を持っています。
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 verb /əˈtjuːn/

attune

順応させる
Meaning
to make someone or something aware of or responsive to something; to adjust or harmonize
Example
She quickly attuned herself to the needs of her new team.
彼女は新しいチームのニーズにすぐ順応した。
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。
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。
C2 noun /ˌænɪmædˈvɜːʒən/

animadversion

批判
Meaning
Strong criticism or censure.
Example
The policy attracted severe animadversion from the public.
その政策は公衆から厳しい批判を受けた。
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。