B2 noun ɪˈfɪʃ.ən.si

efficiency

効率

Meaning

The state or quality of being efficient; achieving maximum productivity with minimum wasted effort or expense.

Example

Efficiency in communication is crucial for businesses.

コミュニケーションにおける効率はビジネスにとって重要です。

C1 adjective /ɪˈstiːmd/

Esteemed

尊敬される

Meaning

respected and admired; held in high regard

Example

He is an esteemed professor at the university.

彼は大学で尊敬されている教授です。

B1 adjective ɪɡˈzɪs.tɪŋ

existing

存在する

Meaning

In existence; present; current.

Example

The commission reviews existing provisions.

委員会は現在の規定を確認しています。

C1 noun ˌes.kəˈleɪ.ʃən

escalation

急激な増加; 上昇。

Meaning

A rapid increase; a rise.

Example

The escalation of production costs impacts profitability.

生産コストの増加は収益性に影響を与えます。

C1 adjective /ɪˈluːsɪv/

elusive

捕えにくい

Meaning

Difficult to find, catch, or achieve; hard to understand or define.

Example

The solution to the problem proved elusive.

その問題の解決策は捕えにくいことが証明された。

B1 noun /ˈɝːθ.kweɪk/

earthquake

地震

Meaning

A sudden and violent shaking of the ground as a result of movements within the earth's crust.

Example

A powerful earthquake struck Japan last night.

昨晩、日本で強い地震が発生しました。

B2 noun /ɪkˈspen.dɪ.tʃər/

expenditure

支出

Meaning

The action of spending funds; an amount of money spent.

Example

Managing expenditure is critical for budgeting.

支出の管理は予算編成において重要です。

B2 verb /ɪˈvækjueɪt/

evacuate

避難する

Meaning

To remove people from a dangerous place to safety.

Example

The residents were ordered to evacuate the building after the fire alarm.

火災警報後、住民は建物から避難するよう命じられました。

C1 verb /ˈɛkˌsaɪz/

excise

切除する

Meaning

to cut out or remove completely, often by surgery

Example

The surgeon excised the tumor successfully.

外科医は腫瘍を成功裏に切除しました。

C1 adjective /ɪkˈstætɪk/

ecstatic

興奮している

Meaning

Feeling or expressing overwhelming happiness or excitement.

Example

The fans were ecstatic after their team won the championship.

ファンたちはチームがチャンピオンになった後、興奮していました。

C2 noun /ˌɛfləˈrɛsəns/

efflorescence

開花

Meaning

the process of flowering or reaching an optimal stage of development

Example

The garden was at the peak of its efflorescence in spring.

庭は春にその開花のピークに達していました。

C1 noun /juːˈfɔː.ri.ə/

euphoria

ユーフォリア, 陶酔, 高揚感

Meaning

A feeling or state of intense excitement and happiness; elation.

Example

Winning the championship brought a sense of euphoria.

チャンピオンシップを勝ち取ったことで、ユーフォリアを感じた。

A2 adjective /ɪnˈdʒɔɪ.ə.bəl/

Enjoyable

楽しい; 快適な

Meaning

pleasant; giving satisfaction or pleasure

Example

The movie was very enjoyable and made everyone laugh.

その映画はとても楽しくて、皆を笑わせました。

C2 adjective /ˌiːvənˈhændɪd/

evenhanded

公平な

Meaning

Fair and impartial; showing no bias or favoritism.

Example

The judge was praised for her evenhanded approach to the case.

その裁判官は、公平なアプローチでその事件を扱ったことで称賛されました。

B2 adjective /ɪnˈdjʊər.ɪŋ/

Enduring

持続的な; 永続的な; 長期間続く

Meaning

lasting; permanent; continuing for a long time

Example

Their enduring friendship lasted for decades.

彼らの持続的な友情は数十年続きました。

A2 noun /ɛmˈplɔɪ.iː/

employee

従業員

Meaning

A person who works for an organization or company in return for payment.

Example

The company values each employee's contribution to its success.

会社は各従業員の成功への貢献を重視しています。

B1 adjective /ɪkˈstrɔːr.dɪ.nər.i/

Extraordinary

非凡な; 顕著な;

Meaning

very unusual; remarkable; going beyond what is normal or expected

Example

The magician's performance was extraordinary and left everyone amazed.

魔法使いのパフォーマンスは非凡で、すべての人を驚かせました

C1 noun /ɪkˈstriː.mɪst/

Extremist

過激派

Meaning

a person who holds extreme political or religious views

Example

The government is taking measures to prevent extremist activities.

政府は過激派の活動を防ぐための措置を講じています。

C1 noun /ɪɡˌzɪl.əˈreɪ.ʃən/

exhilaration

興奮または喜び

Meaning

A feeling of excitement, happiness, or elation.

Example

The feeling of exhilaration after a roller-coaster ride is amazing.

ジェットコースターの後のエクスヒラレーションの感覚は素晴らしいです。

B2 noun /ɪmˈbærəsmənt/

embarrassment

恥ずかしさ

Meaning

a feeling of self-consciousness, shame, or awkwardness

Example

Her face turned red with embarrassment after the mistake.

彼女は間違いを犯した後、恥ずかしさで顔が赤くなった。

C1 verb /ɪnˈtrɛntʃ/

entrench

堅固にする

Meaning

To establish something so firmly that it is difficult to change.

Example

The company entrenched its position in the market through innovation.

その企業は革新を通じて市場での地位を固めました。

B2 verb /ɪmˈbɑːrkɪŋ/

embarking

旅行を始める

Meaning

Beginning a journey or enterprise.

Example

The group is embarking on a long journey.

グループは長い旅行を始めるところです。

C1 verb /ɪmˈbɛl.ɪʃ/

embellish

飾る

Meaning

To make something more attractive by adding decorative details or exaggerating.

Example

He tends to embellish stories to make them more interesting.

彼は物語をより面白くするために飾る傾向があります。

A2 adjective /ˈɛvrideɪ/

everyday

日常

Meaning

common or ordinary; occurring daily

Example

These shoes are perfect for everyday use.

これらの靴は日常使いに最適です。

B2 noun ɪˈmɪʃ.ənz

emissions

排出

Meaning

The production and discharge of something, especially gas, heat, light, or radiation.

Example

Carbon emissions are rising globally.

炭素排出は世界中で増加しています。

C2 verb /ˈɛmɪt/

emmet

アリ

Meaning

an ant; a small insect

Example

The emmet carried food to its nest.

アリは食べ物を巣に運びました。

B1 verb /ˈɛmfəˌsaɪz/

emphasize

強調する

Meaning

to give special importance or attention to something

Example

The teacher emphasized the importance of homework.

先生は宿題の重要性を強調した。

B2 noun /ˌek.spɪˈdɪʃ.ən/

Expedition

遠征

Meaning

a journey undertaken by a group of people with a particular purpose; organized trip for exploration

Example

The mountain climbing expedition required months of careful planning and preparation.

山登りの遠征は、数ヶ月の慎重な計画と準備を必要としました。

B2 noun /ɪnˈfɔːrsmənt/

enforcement

法執行

Meaning

the act of making sure that laws or rules are followed

Example

The police are responsible for law enforcement.

警察は法執行の責任があります。

C1 noun /ɪkˈspoʊnənt/

exponent

指数

Meaning

a person who supports, promotes, or explains an idea; in math, a symbol denoting power

Example

She is a leading exponent of modern dance.

彼女は現代舞踏の先駆者です。

B2 noun /ɪˈkweɪʒən/

equation

方程式

Meaning

a mathematical statement that shows the equality of two expressions

Example

He solved the equation to find the value of x.

彼はxの値を見つけるために方程式を解いた。

B2 adjective /ˌɛm.pəˈθɛ.tɪk/

empathetic

共感的

Meaning

Showing ability to understand and share feelings of others.

Example

She was empathetic towards her friend's struggles.

彼女は友人の苦しみに共感的でした。

C2 adjective /ˌɛvəˈnɛsənt/

evanescent

儚い

Meaning

Quickly fading or disappearing; lasting for only a very short time.

Example

The beauty of the sunset was evanescent, fading within minutes.

夕日の美しさは儚く、数分で消えてしまった。

C1 adjective /ɪˈfɛm.ər.əl/

ephemeral

儚い

Meaning

Lasting for a very short time; temporary or transitory.

Example

The beauty of cherry blossoms is ephemeral.

桜の花の美しさは儚い。

C1 adjective /ɪɡˈzɔːr.bɪ.tənt/

exorbitant

法外な

Meaning

Unreasonably high in price or cost; excessive.

Example

The hotel charged an exorbitant price for a basic room.

ホテルは基本的な部屋に法外な価格を請求しました。

C1 adjective ɪˈræt.ɪk

erratic

不規則

Meaning

Unpredictable and inconsistent; not even or regular in pattern or movement.

Example

His erratic behavior confused his colleagues.

彼のエラティックな行動は、同僚たちを混乱させました。

C2 adjective /ɪˈfiːt/

effete

無力

Meaning

Lacking vitality, strength, or effectiveness; weak and overrefined.

Example

The empire became effete after centuries of indulgence.

帝国は何世代にもわたる享楽の後、無力になった。

C1 adjective /ˌɛm.briˈɒn.ɪk/

embryonic

胚芽の

Meaning

in an early or undeveloped stage; relating to an embryo

Example

The project is still in its embryonic stage.

そのプロジェクトはまだ胚芽段階にあります。

C1 noun /ɪkˈstrækʃən/

extraction

抽出

Meaning

the act of removing something, especially by pulling it out

Example

The extraction of oil from the ground requires special equipment.

地面からの石油の抽出には特別な機器が必要です。

B2 noun /ɪnˌvaɪrənˈmɛntəl ˈmuːvmənt/

environmental movement

環境運動

Meaning

A social or political movement aimed at protecting the environment and promoting sustainable practices through advocacy, education, and policy changes.

Example

The environmental movement focuses on reducing pollution and protecting ecosystems.

環境運動は汚染の削減と生態系の保護に焦点を当てています。

C2 adjective /ˈɛrənt/

errant

逸脱した

Meaning

behaving wrongly or straying from the proper course or standards

Example

The teacher disciplined the errant student.

教師は逸脱した生徒を罰しました。

C2 adjective /ɪkˈsɛpʃənəbl/

exceptionable

受け入れられない

Meaning

Open to objection; causing disapproval.

Example

His rude remarks were considered exceptionable by everyone present.

彼の無礼な発言は、出席していた全員にとって不適切だと見なされた。

C1 noun /ˈɛkstrəˌvɜːrt/

extrovert

外向的な人

Meaning

a person who is outgoing, sociable, and energized by being around other people

Example

As an extrovert, she enjoys meeting new people at social events.

外向的な人として、彼女は社交的なイベントで新しい人々と出会うのが好きです。

C1 noun /ˈiːdɪkt/

edict

勅令

Meaning

An official order, proclamation, or decree issued by an authority.

Example

The king issued an edict banning smoking in public places.

王は公共の場での喫煙を禁止するエディクトを発行しました。

B2 adjective /ɪkˈstɜːr.nəl/

External

外部の

Meaning

coming from or relating to the outside; not belonging to or originating from within

Example

The company hired external consultants to review their business strategy.

その会社はビジネス戦略を見直すために外部のコンサルタントを雇いました。

C1 verb /ɪkˈstɔːrt/

extort

強奪する

Meaning

to obtain something, especially money, by force, threats, or unfair means

Example

The gang attempted to extort money from local shopkeepers.

ギャングは地元の店主からお金を強奪しようとした。

B1 noun ˈiːˌkɒm.ɜːrs

e-commerce

電子商取引

Meaning

The process of buying and selling goods or services through the internet.

Example

E-commerce has revolutionized the way people shop.

電子商取引は人々の買い物方法を革命的に変えました。

Meaning

to become twisted together or caught in something; to involve in difficulties

Example

The fish got entangled in the net.

C2 verb /ɪkˈstɛmpəraɪz/

extemporize

即興する

Meaning

To speak or perform without preparation; improvise.

Example

The actor had to extemporize when he forgot his lines.

俳優はセリフを忘れたとき、即興で演技をしなければなりませんでした。

C2 verb /ˌɛvəˈnɛs/

evanesce

消える

Meaning

To disappear gradually; to fade away.

Example

The mist began to evanesce as the sun rose higher.

霧は太陽が高く昇るにつれて消え始めた。

B2 verb ˈɛkəʊd

echoed

反響する

Meaning

To repeat or resound; to be reminiscent of something.

Example

The words of gratitude echoed in his heart.

感謝の言葉が彼の心に反響した。

C1 noun ɪnˈdaʊmənt

endowment

寄付金, 寄贈

Meaning

An income or form of property given or bequeathed to someone.

Example

The university received a large endowment for research.

大学は研究のために大きな寄付金を受け取った。

B1 noun /ɪˈdɪʃən/

edition

版

Meaning

a particular version or printing of a book, newspaper, or other publication

Example

The latest edition of the magazine sold out quickly.

雑誌の最新の版はすぐに売り切れました。

C1 verb ɪɡˈzæsərbeɪt

exacerbate

悪化させる

Meaning

To make a problem, bad situation, or negative feeling worse.

Example

Climate change exacerbates flooding issues.

気候変動が洪水の問題を悪化させている。

C2 verb /ɪnˈvaɪərən/

environ

囲む

Meaning

to surround or enclose; to encircle

Example

Mountains environ the small valley.

山々は小さな谷を囲んでいます。

C1 noun /ɪnˈkrəʊtʃmənt/

encroachment

侵害

Meaning

the act of gradually intruding or taking over someone’s rights, land, or space

Example

The villagers protested against the encroachment on their farmland.

村人たちは自分たちの農地への侵害に反対して抗議しました。

C1 verb /ɪˈmænsɪpeɪt/

emancipate

解放する

Meaning

to set someone free from legal, social, or political restrictions; to liberate from slavery or oppression

Example

The law was designed to emancipate slaves and grant them full citizenship.

その法律は奴隷を解放し、完全な市民権を付与するために設計されました。

C2 noun /ɪˈlɪziəm/

elysium

エリシウム

Meaning

A place or state of perfect happiness; in Greek mythology, the afterlife paradise.

Example

For her, the garden was a personal elysium.

彼女にとって、その庭は個人的なエリシウムでした。

C2 adjective /ɪkˌstɛmpəˈreɪniəs/

extemporaneous

準備なしで行う

Meaning

Spoken or done without preparation.

Example

He gave an extemporaneous speech at the meeting.

彼は会議で即興のスピーチをしました。

B1 adverb /ɪˈventʃuəli/

Eventually

最終的に; 結局

Meaning

in the end; finally; at last

Example

After years of hard work, she eventually became a doctor.

何年もの努力の後、彼女は最終的に医者になった。

C2 noun /ɪˈklɛktɪˌsɪzəm/

eclecticism

エクレクティズム

Meaning

A method or practice of deriving ideas, style, or taste from a broad and diverse range of sources.

Example

The architect’s work shows eclecticism by blending modern and traditional elements.

建築家の仕事は、現代的な要素と伝統的な要素を組み合わせてエクレクティズムを示しています。

C1 adjective /ɪnˈɡreɪnd/

engrained

深く根付いている、変更が難しい

Meaning

Firmly fixed or established; difficult to change.

Example

Cultural practices are often deeply engrained in the fabric of society.

文化的な慣習は、しばしば社会の構造に深く根付いています。

C2 adjective /ˈɛnərˌveɪtɪd/

enervated

疲れ切った

Meaning

Lacking energy, vitality, or strength; weakened or exhausted.

Example

After the long meeting, she felt completely enervated.

長い会議の後、彼女は完全に疲れ切ったと感じていた。

B2 verb /ɪkˈsploʊd/

explode

爆発する

Meaning

to burst or shatter violently and noisily as a result of rapid combustion or pressure

Example

The bomb exploded in the middle of the street.

爆弾は通りの真ん中で爆発しました。

C1 adjective /ɪnˈθrɔː.lɪŋ/

enthralling

魅力的

Meaning

Captivating and holding one's attention completely; fascinating.

Example

The movie was enthralling, keeping the audience engaged till the end.

その映画は魅力的で、観客は最後まで引き込まれていました。

B2 verb ˈel.ɪ.veɪt

elevate

高める、上げる、より重要または印象的なレベルに引き上げる

Meaning

To lift to a higher position; to raise to a more important or impressive level.

Example

Good leadership can elevate team performance.

良いリーダーシップはチームのパフォーマンスを高めることができます。

B2 adjective /ɪkˈstɪr.i.ər/

Exterior

外部の; 外見; 外の表面

Meaning

relating to the outside part or surface of something; outer

Example

The exterior of the building was painted in bright colors.

その建物の外観は明るい色で塗られていました。

B1 adjective ɪkˈstriːm

extreme

極端

Meaning

Reaching a high or the highest degree; very great.

Example

Extreme weather patterns disrupt ecosystems.

極端な気象パターンは生態系を乱します。

A2 verb /ˈeksərsaɪz/

exercise

運動する

Meaning

to do physical activity; to use or practice

Example

I exercise at the gym three times a week.

私は週に3回ジムで運動をします。

C2 noun /ɪˈfɛmɪnəsi/

effeminacy

女性的特質

Meaning

The quality of showing traits traditionally associated with women, such as delicacy or softness.

Example

In ancient times, effeminacy was often criticized as a sign of weakness.

古代では、女性的特質はしばしば弱さのサインとして批判されていました。

C1 adjective /ɪˈstreɪndʒd/

estranged

疎遠

Meaning

no longer close or affectionate with someone; alienated

Example

She felt estranged from her family after the long dispute.

彼女は長い争いの後、家族と疎遠に感じた。

C1 verb /ˈiːvzdrɒp/

eavesdrop

盗み聞き

Meaning

to secretly listen to a conversation

Example

She stood near the door to eavesdrop on their conversation.

彼女はその会話をこっそり聞くためにドアの近くに立っていました。

B2 noun /ɪkˈsploʊʒən/

explosion

爆発

Meaning

a violent burst or release of energy, often causing damage and noise

Example

The explosion shook the entire neighborhood.

爆発は近隣一帯を揺さぶった。

C2 noun /ˌiː.tiˈɒ.lə.dʒi/

etiology

病因学

Meaning

the cause or origin of a disease or condition

Example

Doctors are studying the etiology of the new virus.

医師たちは新しいウイルスの病因学を研究しています。

Meaning

To give someone the power or authority to do something; to make someone stronger or more confident.

Example

Education can empower people to improve their lives.

B2 noun /ˈɛksələns/

excellence

卓越

Meaning

the quality of being outstanding or extremely good

Example

The school is known for its academic excellence.

その学校は学術的な卓越性で知られています。

B1 noun /ˈaɪ.braʊ/

Eyebrow

眉毛

Meaning

the strip of hair growing on the ridge above the eye socket

Example

She raised her eyebrow in surprise.

彼女は驚いて眉を上げた。

C2 adjective /ɪˈkwɪvəkəl/

equivocal

曖昧

Meaning

Open to more than one interpretation; ambiguous.

Example

His equivocal answer confused everyone.

彼の曖昧な答えは皆を混乱させた。

B2 noun /ɪkˈspəʊʒər/

exposure

曝露

Meaning

the state of being exposed to contact with something, especially harmful

Example

Prolonged exposure to the sun can damage your skin.

長時間太陽に曝されると、肌にダメージを与えることがあります。

B1 noun ɪmˈplɔɪmənt

employment

雇用

Meaning

The condition of having paid work; the action of giving work to someone.

Example

Employment was limited to Urdu speakers.

雇用はウルドゥ語を話す人々に限定されていました。

C2 verb /ɪnˈθrɔːl/

enthral

魅了する

Meaning

To captivate or hold someone’s full attention.

Example

The magician’s performance enthralled the audience.

マジシャンのパフォーマンスは観客を魅了した。

B1 noun /ˈɛlɪmənt/

element

要素

Meaning

A basic or essential part of something; a simple substance that cannot be broken down further.

Example

Trust is a key element of any strong relationship.

信頼は強い関係の重要な要素です。

C1 adjective /ɪɡˈzɪləreɪtɪd/

exhilarated

興奮した

Meaning

feeling very happy, animated, or elated

Example

She felt exhilarated after finishing the marathon.

彼女はマラソンを終えた後、とても興奮していた。