empirical
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C1 adjective ɪmˈpɪr.ɪ.kəl

empirical

経験に基づくまたは実証的
Meaning
Based on, concerned with, or verifiable by observation or experience rather than theory or pure logic.
Example
Scientific research relies on empirical evidence.
科学的な研究は実証的な証拠に依存しています。
B1 noun /ɪkˈspreʃ.ən/

Expression

表現; 発表;
Meaning
the act of making thoughts or feelings known; a look on someone's face
Example
The artist's painting was a beautiful expression of her inner emotions.
アーティストの絵は彼女の内面的な感情の美しい表現でした。
B2 verb /ɪnˈvɪʒən/

envision

想像する
Meaning
to imagine or picture something in the future; to visualize a possibility or goal
Example
She envisions a world where everyone has equal access to education.
彼女はすべての人が平等に教育を受けられる世界を想像しています。
C1 adjective /ɪˈkwɛstriən/

equestrian

馬術の
Meaning
Relating to horse riding or horseback riders.
Example
She won several equestrian competitions.
彼女は複数の馬術競技で優勝しました。
C1 verb /ɪnˈʃraɪn/

enshrine

何かを神聖または重要として保存または敬う
Meaning
to preserve or cherish something as sacred or important
Example
The constitution enshrines the right to freedom of speech.
憲法は言論の自由の権利を保護しています。
C2 noun /juː/

Ewe

雌羊
Meaning
a female sheep
Example
The ewe gave birth to twin lambs.
雌羊は双子の子羊を産みました。
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。
C2 noun /ˌɛksəˈdʒiːsɪs/

exegesis

注解
Meaning
A critical explanation or interpretation of a text, especially a religious scripture.
Example
The professor gave a detailed exegesis of the biblical passage.
教授は聖書の一節の詳細な注解を提供した。
B2 noun /ˈɛθɪk/

ethic

倫理
Meaning
a set of moral principles, especially ones relating to a particular group, system, or profession
Example
He has a strong work ethic and always meets deadlines.
彼は強い労働倫理を持っており、常に締め切りを守ります。
B2 verb /ɪnˈlɑːrdʒ/

enlarge

広げる
Meaning
to make something bigger or increase in size
Example
They decided to enlarge their house.
彼らは家を広げることに決めました。
B2 adverb /ɪkˈskluːsɪvli/

exclusively

独占的に
Meaning
only; not shared with others
Example
This service is available exclusively to premium members.
このサービスはプレミアムメンバーのみが利用できます。
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 ɪˈveɪ.sɪv

evasive

回避的な, 狡猾な, 曖昧な
Meaning
Tending to avoid commitment or self-revelation, especially by responding only indirectly.
Example
He gave an evasive answer to avoid trouble.
彼は問題を避けるために回避的な答えをしました。
B2 noun /ɪkˈses/

Excess

過剰; 余分
Meaning
an amount of something that is more than necessary, permitted, or desirable
Example
The excess food from the party was donated to the local shelter.
パーティーからの余剰食料は地元のシェルターに寄付されました。
C1 adjective /ɪkˈsplɔɪtətɪv/

exploitative

搾取的な
Meaning
making use of a situation or people unfairly and unethically for one's own advantage
Example
The workers protested against the exploitative practices of the factory.
労働者たちは工場の搾取的な行動に抗議した。
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。
C2 noun /ɪˌkliːziˈæstɪk/

ecclesiastic

教会の
Meaning
A member of the clergy or church official.
Example
The council was attended by several high-ranking ecclesiastics.
その会議には数人の高位の教会役員が出席しました。
B1 adjective /ɪmˈbær.ə.sɪŋ/

Embarrassing

恥ずかしい; 気まずい; 屈辱的な
Meaning
causing shame or awkwardness; uncomfortable; humiliating
Example
It was embarrassing when I forgot her name.
彼女の名前を忘れたとき、それは恥ずかしかったです。
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。
C1 verb /ɪnˈɡroʊs/

engross

夢中
Meaning
to absorb all the attention or interest of someone
Example
She was so engrossed in the book that she forgot the time.
彼女は本に夢中になりすぎて時間を忘れてしまいました。
C2 verb /ɪnˈdjuː/

endue

授ける
Meaning
To provide or endow with a quality or ability.
Example
The leader was endued with wisdom and courage.
リーダーは知恵と勇気を授けられた。
C2 verb /ɪˈmɛnd/

emend

訂正する
Meaning
to correct or revise a text, especially for errors
Example
The editor emended the manuscript before publication.
編集者は公開前に原稿を訂正しました。
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 /ˈiːɡoʊˌtɪzəm/

egotism

エゴイズム
Meaning
The practice of talking and thinking about oneself excessively because of an inflated sense of self-importance.
Example
His constant boasting revealed his egotism.
彼の絶え間ない自慢は、彼のエゴティズムを明らかにした。
C2 adjective /ɪˈfʌldʒənt/

effulgent

輝かしい
Meaning
Shining brilliantly; radiant.
Example
Her effulgent smile brightened everyone's mood.
彼女の輝かしい笑顔は皆の気分を明るくした。
B2 adjective /ɪkˈsten.sɪv/

Extensive

広範囲の; 大規模な; 広い
Meaning
covering or affecting a large area; comprehensive; wide-ranging
Example
The company conducted extensive research before launching the new product.
企業は新しい製品を発売する前に広範囲の研究を行いました。
C2 noun /ˌɛntəˈmɒlədʒi/

entomology

昆虫学
Meaning
The scientific study of insects.
Example
She studied entomology to understand the behavior of bees.
彼女は蜂の行動を理解するために昆虫学を学びました。
B2 adjective /ɪˈlɛktərəl/

electoral

選挙の
Meaning
related to elections or voting
Example
The electoral process in the country has been reformed in recent years.
その国の選挙プロセスは近年改革されました。
B2 verb /ˈɛmɪˌɡreɪt/

emigrate

移住する
Meaning
To leave one's own country in order to settle permanently in another.
Example
Many people emigrated from Europe to America in the 19th century.
多くの人々は19世紀にヨーロッパからアメリカに移住しました。
C2 verb /ɪnˈkʌmbər/

encumber

負担をかける
Meaning
to burden or weigh down something, making it difficult to move or progress
Example
She was encumbered by the heavy luggage during her journey.
彼女は旅行中に重い荷物に負担を感じていました。
C1 noun /ɪɡˈzuːbərəns/

exuberance

活力
Meaning
the quality of being full of energy, excitement, and cheerfulness
Example
Her exuberance made the whole team feel motivated.
彼女の活力はチーム全体をやる気にさせた。
B2 verb /ɪˈrɛkt/

erect

建てる
Meaning
to build or construct something; to set upright
Example
They erected a statue in the town square.
彼らは町の広場に像を建てました。
B2 noun /ɪkˈskɜː.ʃən/

Excursion

遠足; 観光旅行
Meaning
a short journey or trip, especially one engaged in as a leisure activity
Example
The school organized an excursion to the science museum for all students.
学校はすべての学生のために科学博物館への遠足を組織しました。
C1 adjective /ɪmˈfæt.ɪk/

Emphatic

強調された; 強い; 力強く表現された
Meaning
forceful; strong; showing emphasis; expressed with force and conviction
Example
She gave an emphatic 'no' to the proposal.
彼女は提案に対して強調された'ノー'を言いました。
A2 adverb /ˈiːkwəli/

equally

平等に
Meaning
in an equal or fair way; to the same degree
Example
The prize money was equally divided among the winners.
賞金は受賞者の間で平等に分けられました。
B1 verb /ɪmˈplɔɪ/

employ

雇う
Meaning
to hire someone to do a job; to use something effectively
Example
The company plans to employ more engineers next year.
その会社は来年、もっと多くのエンジニアを雇う予定です。
C2 noun /ɪnˈtriːti/

entreaty

請願
Meaning
An earnest or humble request or plea.
Example
She made an entreaty for peace during the heated argument.
彼女は激しい議論の中で平和を求める請願をしました。
C2 noun /ɪˌnʌn.siˈeɪ.ʃən/

enunciation

発音, 明確な発音
Meaning
The act of saying or pronouncing words clearly and distinctly.
Example
His enunciation was clear during the presentation.
彼の発音はプレゼンテーション中に明確でした。
A2 abbreviation /ɛtˈsɛtərə/

etc

など
Meaning
Used to indicate additional, similar items in a list that are not mentioned.
Example
The shop sells fruits, vegetables, dairy, etc.
店では果物、野菜、乳製品などが販売されています。
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。
C2 noun /ɪkˈskrɛsəns/

excrescence

異常な成長
Meaning
An abnormal outgrowth or lump, often considered unattractive.
Example
The building was considered an excrescence on the landscape.
その建物は風景の中で異常な成長と見なされました。
B1 adjective /ɪnˈtaɪər/

Entire

完全な; 全体; 分割されていない
Meaning
complete; whole; not divided or in parts
Example
She read the entire book in one sitting.
彼女は一気に本全体を読みました。
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。
C1 adjective /ɪkˈskjuːzəbl/

excusable

許容可能な
Meaning
Able to be forgiven or justified.
Example
Her mistake was excusable given the circumstances.
彼女の間違いは状況を考慮すれば許容可能でした。
C1 verb ɪɡˈzɛm.plɪ.faɪ

exemplify

例示する
Meaning
To be a typical example of or to illustrate something clearly, to show as an example or demonstrate.
Example
His dedication exemplifies true leadership.
彼の献身は真のリーダーシップを例示しています。
C2 adjective /ˌen.zɪˈmæt.ɪk/

enzymatic

酵素に関連する
Meaning
Relating to or involving enzymes, which are proteins that catalyze biochemical reactions in living organisms.
Example
Enzymatic reactions regulate metabolism in the human body.
酵素反応は人間の体内で代謝を調節します。
B1 verb /ˈɛstɪˌmeɪt/

estimate

見積もる
Meaning
To roughly calculate or judge the value, number, quantity, or extent of something.
Example
The engineer estimated the cost of the project at $5 million.
エンジニアはプロジェクトのコストを500万ドルと見積もりました。
C1 adverb /ˈiːstwədz/

Eastwards

東へ
Meaning
towards the east; in an eastern direction
Example
The river flows eastwards into the ocean.
川は東へ流れて海へ向かう。
A1 adverb /ˈevər/

Ever

いつでも; 常に; どんな方法でも
Meaning
at any time; always; in any way
Example
Have you ever been to Paris?
あなたはパリに行ったことがありますか？
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。
B2 noun ɪnˈdev.ər

endeavor

努力
Meaning
An attempt to achieve a goal; a serious determined effort.
Example
The endeavor to innovate space tourism is ambitious.
スペースツーリズムの革新への努力は野心的です。
C2 noun /ɪˌdʒækjʊˈleɪʃən/

ejaculation

射精 / 突然の叫び
Meaning
The action of suddenly saying something or the release of semen during sexual climax.
Example
His sudden ejaculation of joy surprised everyone in the room.
彼の突然の喜びの射精は部屋の中の誰もが驚いた。
B2 verb /ɪnˈɡeɪdʒɪŋ/

engaging

関与する
Meaning
Participating or becoming involved in; occupying or attracting someone's interest or attention.
Example
Engaging youth in education is essential.
教育に若者を関与させることは重要です。
B2 noun ˌel.ɪ.dʒəˈbɪl.ə.ti

eligibility

適格性
Meaning
The state of having the right to do or obtain something through satisfaction of the appropriate conditions.
Example
Eligibility criteria maintain fairness.
適格基準は公平性を維持します。
B2 noun /ˈɛseɪ/

essay

エッセイ
Meaning
A short piece of writing on a particular subject.
Example
She wrote an essay about climate change.
彼女は気候変動についてのエッセイを書きました。
C1 noun ˈiːkəʊˌsɪstəm ˈsɜːvɪsɪz

ecosystem services

生態系サービス
Meaning
The benefits people obtain from ecosystems.
Example
Forests provide valuable ecosystem services, such as purifying air and water.
森林は空気と水を浄化するなど、貴重な生態系サービスを提供します。
C1 adjective ɪˈθɪə.ri.əl

ethereal

天上的, 精緻な, 超自然的
Meaning
Extremely delicate and light in a way that seems too perfect for this world.
Example
Her voice had an ethereal quality.
彼女の声にはエセリアルな質感がありました。
C2 verb /ɪkˈspɛktəreɪt/

expectorate

痰を吐く
Meaning
to cough up and spit out mucus from the throat or lungs
Example
The patient began to expectorate thick mucus.
患者は濃い粘液を吐き始めました。
B2 verb /ɪnˈroʊl/

enrol

登録する
Meaning
To officially register or sign up for a course, program, or membership
Example
She decided to enrol in a language course to improve her skills.
彼女はスキルを向上させるために語学コースに登録することに決めた。
B1 noun /ɪˈlɛkʃən/

election

選挙
Meaning
The process of choosing someone for public office by voting.
Example
The election will be held next month.
選挙は来月行われます。
C2 verb /ɪˈfjuːz/

effuse

表現する
Meaning
To pour out or express feelings freely and openly.
Example
She effused gratitude for the help she received.
彼女は受け取った助けに感謝の気持ちを表しました。
C2 verb /ɪkˈspeɪʃiˌeɪt/

expatiate

詳細に話すまたは書く
Meaning
to speak or write at length or in detail
Example
The professor expatiated on the importance of critical thinking.
教授は批判的思考の重要性について詳細に説明しました。
C1 verb /ɪnˈɡʌlf/

engulf

飲み込む
Meaning
to completely surround or cover something or someone
Example
The village was engulfed by floodwaters.
その村は洪水に飲み込まれた。
C2 verb /ˈɛdɪfaɪ/

edify

Meaning
To instruct or improve someone morally or intellectually.
Example
Good books can both entertain and edify the reader.
C2 adjective /ɪɡˈzɔːstɪbəl/

exhaustible

使い果たせる
Meaning
able to be used up completely; not infinite
Example
Coal and oil are exhaustible resources.
石炭と石油は使い果たせる資源です。
A1 adjective /ɪkˈsaɪtɪd/

excited

興奮した
Meaning
very enthusiastic and eager about something
Example
The children were excited to open their presents.
子供たちはプレゼントを開けるのを楽しみにして興奮していました。
C1 verb /ɪˈspaʊz/

espouse

支持する
Meaning
To adopt or support a cause, belief, or way of life.
Example
She espoused the philosophy of nonviolence throughout her career.
彼女はキャリアを通じて非暴力の哲学を支持していました。
C1 adjective /ɪnˈdjʊər.ə.bəl/

Endurable

耐えられる
Meaning
able to be endured; bearable; tolerable
Example
The pain was endurable with proper medication.
適切な薬で痛みは耐えられました。
C1 verb /ɪnˈsjuː/

ensue

結果として起こる
Meaning
to happen as a result or consequence
Example
After the argument, silence ensued.
議論の後、沈黙が続いた。
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 noun /ˈɛn.kleɪv/

enclave

飛び地
Meaning
a distinct area or group enclosed within a larger one
Example
The city has a small Italian enclave where traditions are preserved.
その都市には、伝統が守られている小さなイタリアン飛び地があります。
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。
B1 noun /ɪkˈspres treɪn/

Express Train

エクスプレス列車
Meaning
a fast train that travels between major stations with few or no intermediate stops
Example
The express train reached the destination in half the usual time.
エクスプレス・トレインは通常の半分の時間で目的地に到着しました。
B2 noun /ˈet.ɪ.kət/

Etiquette

エチケット
Meaning
the customary code of polite behavior in society or among members of a particular profession
Example
Proper etiquette requires standing when a lady enters the room.
適切なエチケットは、女性が部屋に入るときに立ち上がることを求めます。
A2 verb ɜrn

earn

稼ぐ
Meaning
To obtain money, typically as payment for work or through investment; to acquire or deserve through one's efforts.
Example
Assets help you earn income even while sleeping.
資産は、寝ている間でも収入を得るのを助けてくれます。
B1 adjective /ɪnˌθjuːziˈæstɪk/

enthusiastic

熱心な
Meaning
Having or showing intense and eager enjoyment, interest, or approval.
Example
The explorers were enthusiastic about the journey.
探検家たちはその旅に熱心でした。
C1 verb /ɪˈkɒnəmaɪz/

economize

節約する
Meaning
To reduce spending or use resources carefully.
Example
Families are trying to economize by cutting unnecessary expenses.
家族は不必要な支出を削減して、節約しようとしています。
B1 verb /ɪkˈspænd/

expand

拡大する
Meaning
To increase in size, number, or importance.
Example
The company plans to expand its operations into new markets.
その会社は新しい市場に事業を拡大する予定です。
C2 verb /ɪnˈθroʊn/

enthrone

戴冠する
Meaning
to install someone on a throne or to give someone high status
Example
The king was enthroned in a grand ceremony.
王は大きな儀式で即位しました。
C1 noun /ɪˈklɪps/

Eclipse

日食 (太陽または月)
Meaning
an obscuring of light from one celestial body by another; a decline or loss
Example
The total solar eclipse darkened the sky for several minutes.
完全な太陽日食は数分間空を暗くしました。
B1 adjective /ɪˈlɛktrɪkəl/

electrical

電気的な
Meaning
related to electricity or the use of electrical power
Example
The electrical system in the house needs repair.
家の電気システムは修理が必要です。
C1 adjective /ɪmˈbrɔɪld/

embroiled

巻き込まれた
Meaning
being deeply involved in a difficult situation, conflict, or scandal
Example
She found herself embroiled in a heated family dispute.
彼女は激しい家族間の争いに巻き込まれているのを見つけた。
C2 noun /ɪˈlɪksər/

elixir

エリクシール
Meaning
A magical or medicinal potion believed to cure illnesses or grant immortality.
Example
The old legend spoke of an elixir that could grant eternal youth.
古代の伝説は、永遠の若さを与えることができるエリクシールについて語っていました。
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。
C2 verb /ˈekspərˌɡeɪt/

expurgate

削除する
Meaning
To remove offensive or objectionable parts from a text or speech.
Example
The publisher decided to expurgate the novel before reprinting it.
出版社は再版前に小説を削除することにした。
A2 noun ɪˈmɜː.dʒən.si

emergency

緊急事態
Meaning
A sudden situation that is dangerous or serious and needs immediate attention or action.
Example
A financial emergency can arise at any time.
財政的な緊急事態はいつでも発生する可能性があります。
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。
B2 noun /ɪɡˌzædʒ.əˈreɪ.ʃən/

Exaggeration

誇張
Meaning
a statement that represents something as better or worse than it really is
Example
His story about the fish he caught was clearly an exaggeration.
彼が捕まえた魚についての話は明らかに誇張だった。
C1 noun /ɪkˌsperɪˈmɛnteɪʃən/

experimentation

実験
Meaning
The process of performing a scientific procedure to make a discovery, test a hypothesis, or demonstrate a known fact.
Example
Experimentation leads to groundbreaking products.
実験は革新的な製品を生み出します。
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。
C1 adjective ɪˌɡæl.ɪˈteə.ri.ən

egalitarian

平等主義者
Meaning
Believing in or based on the principle that all people are equal and deserve equal rights and opportunities.
Example
The new law promotes an egalitarian society.
新しい法律は平等主義の社会を促進します。
C2 adjective /ˌɛsəˈtɛrɪk/

esoteric

秘教的
Meaning
intended for or understood by only a small number of people with special knowledge
Example
The professor gave an esoteric lecture on ancient philosophy.
教授は古代哲学に関する秘教的な講義を行いました。
C2 noun /eɪˈklɑː/

eclat

大成功
Meaning
Brilliant success, acclaim, or great public approval.
Example
The artist's debut performance was met with great éclat.
アーティストの初めてのパフォーマンスは大成功を収めました。
B2 noun /ˈɛmɪɡrənt/

emigrant

移民
Meaning
A person who leaves their own country to settle permanently in another.
Example
The emigrant started a new life in Canada.
移民はカナダで新しい生活を始めました。
C2 noun /juːˈdʒen.ɪks/

eugenics

優生学
Meaning
the study or practice of improving the genetic quality of the human population
Example
Eugenics has been criticized for its unethical applications in history.
優生学は歴史的にその非倫理的な応用について批判されてきました。
C2 noun /ˈɛpɪˌsaɪkl/

epicycle

外周上の小円
Meaning
a small circle whose center moves around the circumference of a larger one, used in ancient astronomy
Example
The concept of the epicycle was used to explain planetary motion.
エピサイクルの概念は惑星の運動を説明するために使用されました。
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。
A1 adjective/adverb /ˈɜːrli/

early

早い
Meaning
before the usual or expected time
Example
She arrived early to the meeting.
彼女は会議に早く到着しました。
B2 verb /ɪkˈsiːd/

exceed

超える
Meaning
to go beyond a limit or expectation
Example
The athlete exceeded everyone's expectations by winning the gold medal.
アスリートは金メダルを獲得することで皆の期待を超えました。
C1 noun /ɪˈpɪt.ə.mi/

epitome

特定の品質やタイプの完璧な例; 何かの最良の表現
Meaning
A perfect example of a particular quality or type; the best representation of something.
Example
She is the epitome of grace and kindness.
彼女は優雅さと親切さの典型です。
B2 noun /ˌɛkspɜːˈtiːz/

expertise

専門知識
Meaning
Expert knowledge or skill in a particular area.
Example
His expertise in graphic design is widely recognized.
彼のグラフィックデザインの専門知識は広く認められています。
C1 noun /ˌɛks.həˈleɪ.ʃən/

exhalation

息を吐くこと
Meaning
The action of breathing out.
Example
Slow exhalation calms the nervous system.
ゆっくりした息を吐くことは神経系を落ち着かせます。
B1 verb /ɪnˈʃʊər/

ensure

確実にする
Meaning
To make certain that something will happen or be the case.
Example
Please ensure that the door is locked before you leave.
出発前にドアが閉まっていることを確認してください。
C2 noun /ˈɛksplətɪv/

expletive

罵声
Meaning
a word or phrase used as an exclamation, often offensive or profane
Example
He shouted an expletive when he dropped the hammer on his foot.
彼はハンマーを足に落としたときに罵声をあげました。
B2 noun /ˌek.əˈnɒm.ɪk səˌsteɪ.nəˈbɪl.ə.ti/

economic sustainability

経済の持続可能性
Meaning
The ability of an economy to support a defined level of economic production indefinitely.
Example
Economic sustainability drives long-term growth.
経済の持続可能性は長期的な成長を促進する。
B2 noun /iˈkɒlədʒɪst/

ecologist

エコロジスト
Meaning
A scientist who studies the relationships between living organisms and their environment.
Example
The ecologist studied the effects of pollution on the forest ecosystem.
エコロジストは森林の生態系に対する汚染の影響を研究しました。
B2 adverb /ˈiːɡərli/

Eagerly

熱心に; 強い欲望を持って
Meaning
with keen interest or enthusiasm; with great desire
Example
The children eagerly waited for the holiday to begin.
子供たちは休暇が始まるのを熱心に待っていました。
C1 noun ˈeʃ.ə.lɒn

echelon

階層、ランク、段階
Meaning
A level or rank in an organization, a profession, or society.
Example
He climbed to the upper echelon of the corporate world.
彼は企業の世界の上級レベルに登りつめました。
C2 noun, adjective /ɪˈklɪptɪk/

ecliptic

黄道
Meaning
The apparent path of the sun across the sky; relating to eclipses or this path.
Example
The ecliptic is the plane of Earth's orbit around the Sun.
黄道は地球の太陽の周りの軌道の平面です。
A2 noun /ˈer.ər/

Error

エラー; 間違い
Meaning
a mistake; something done incorrectly or wrong
Example
The error in the calculation led to incorrect results.
計算のエラーにより、不正確な結果が出ました。
C2 adjective /ɪˈmɛrɪtəs/

emeritus

名誉教授
Meaning
having retired but allowed to retain their title as an honor
Example
He is a professor emeritus at the university.
彼は大学の名誉教授です。
C2 noun /ˈɛpəlɛt/

epaulette

肩章
Meaning
A variant spelling of epaulet, also meaning a shoulder ornament, especially on military uniforms.
Example
The officer’s epaulette shone brightly under the sunlight.
その将校のエポレットは太陽の下で輝いていました。
B2 noun /ˈɛθɪks/

ethics

倫理
Meaning
moral principles that govern a person's behavior or the conduct of an activity
Example
Business ethics require companies to act fairly and responsibly.
ビジネス倫理は、企業に公平かつ責任を持って行動することを求めます。
C1 verb /ɪˈkweɪt/

equate

等しい
Meaning
To consider as equal or equivalent.
Example
Many people equate wealth with success.
多くの人々は富と成功を同一視します。
C2 noun /ɪnˈkʌmbrəns/

encumbrance

負担 / 障害
Meaning
a burden or obstacle that makes progress or movement difficult
Example
Debt can become a serious encumbrance in life.
借金は人生で深刻な障害となる可能性があります。
B2 noun /ɪˈsteɪt/

estate

Meaning
A large area of land, property, or possessions owned by someone, often including a big house.
Example
The family owned a large estate in the countryside.
B2 adjective /ɪɡˈzɔː.stɪd/

exhausted

疲れ果てた
Meaning
Extremely tired; having no energy left.
Example
Feeling exhausted after waking up is common.
目が覚めた後に疲れ果てたと感じるのはよくあることです。
A2 noun /ɪˈvent/

event

出来事
Meaning
something that happens, especially something important
Example
The concert was the biggest event of the year.
コンサートは今年最大の出来事でした。
B2 adjective /ɪˈlæs.tɪk/

Elastic

弾力性
Meaning
able to stretch and return to original shape; flexible; adaptable
Example
The elastic band can stretch and return to its original shape.
弾力性のあるバンドは伸びて元の形に戻ります。
C1 noun /ˌɛkstrəˈdɪʃən/

extradition

引渡し
Meaning
the official process of sending someone accused of a crime to another country or state
Example
The extradition of the suspect was delayed due to legal issues.
容疑者の引渡しは法的問題のため遅れました。
B2 adjective /ˈɛθnɪk/

ethnic

民族的
Meaning
relating to a population subgroup with a common national or cultural tradition
Example
The festival celebrated the city's diverse ethnic communities.
フェスティバルは都市のさまざまな民族のコミュニティを祝いました。