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C2 verb /ɪkˈstruːd/

extrude

押し出す
Meaning
to force something out through a small opening; to shape by pushing material through a mold
Example
The factory extrudes plastic pipes using modern machines.
工場は最新の機械を使用してプラスチック管を押し出します。
C2 adjective /ˈɛstɪməbl/

estimable

尊敬すべき
Meaning
Worthy of great respect.
Example
Her estimable achievements inspired the whole community.
彼女の尊敬に値する業績はコミュニティ全体にインスピレーションを与えました。
A2 noun /ɪksˈtʃeɪndʒ/

Exchange

交換
Meaning
an act of giving one thing and receiving another in return
Example
The exchange of gifts is a common tradition during the holidays.
贈り物の交換は休日に一般的な伝統です。
C2 verb /ˈjuːləˌdʒaɪz/

eulogize

讃える
Meaning
To praise highly in speech or writing, especially in honor of someone who has died.
Example
They gathered to eulogize their beloved teacher.
彼らは愛する先生を称賛するために集まりました。
C2 noun /ɪkˌspɒstjʊˈleɪʃən/

expostulation

抗議
Meaning
the act of expressing protest or disagreement
Example
His expostulation against the unfair rules was ignored.
不公平なルールに対する彼の抗議は無視されました。
C1 adjective /ɪˈmeɪʃieɪtɪd/

emaciated

やせ衰えた
Meaning
Abnormally thin or weak, usually due to illness or lack of food.
Example
The emaciated dog was rescued from the abandoned house.
そのやせ衰えた犬は放置された家から救出されました。
B1 verb /ˈedɪt/

edit

編集する
Meaning
to make changes to improve or correct something
Example
I need to edit this document before submission.
この文書を提出前に編集する必要があります。
C1 noun /ˈiː.dən/

Eden

エデン
Meaning
a place or state of great happiness; paradise
Example
The garden was like Eden, filled with beautiful flowers and peaceful atmosphere.
その庭はエデンのようで、美しい花々と平和な雰囲気に満ちていました。
B2 noun ˈiːkoʊˌtʊrɪzəm

Eco-tourism

エコツーリズム
Meaning
A form of tourism involving responsible travel to natural areas that conserves the environment and improves the well-being of local people.
Example
Eco-tourism promotes responsible travel to natural areas.
エコツーリズムは自然地域への責任ある旅行を促進します。
A2 adjective /ɪˌlɛkˈtrɒnɪk/

electronic

電子の
Meaning
Operating with or produced by the use of electronic devices.
Example
She bought an electronic keyboard for her music lessons.
彼女は音楽のレッスンのために電子キーボードを買った。
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。
C1 verb /ˈɛkskəˌveɪt/

excavate

幸せ
Meaning
to dig out or remove earth carefully, often for building or archaeological purposes
Example
The workers excavated the site to prepare for construction.
彼女は賞を受け取ったとき、自分の幸せを隠すことができませんでした。
C2 verb /ɪnˈsnɛər/

ensnare

罠にかける
Meaning
to catch or trap, often by trickery or deceit
Example
The hunter ensnared the rabbit with a net.
ハンターはネットでウサギを捕まえました。
C1 verb /ɛmˈbɛzəl/

embezzle

Meaning
to steal or misuse money or property entrusted to one's care
Example
The accountant was arrested for embezzling company funds.
A1 noun /aɪ/

Eye

目; 視力
Meaning
the organ of sight; the ability to see
Example
Her eyes sparkled with joy.
彼女の目は喜びで輝いていた。
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 ɪˌməʊ.ʃəˈnæl.ɪ.ti

emotionality

感情性
Meaning
The quality of being driven by emotions rather than reason; emotional responsiveness.
Example
His emotionality often influenced his decisions.
彼の感情性はしばしば彼の決定に影響を与えた。
B2 noun /ˈɛntəti/

entity

実体
Meaning
something that exists as a single and complete unit; an organization or being
Example
The new company will operate as a separate legal entity.
新しい会社は別個の法的実体として運営されます。
A1 pronoun /ˈɛvrɪθɪŋ/

everything

すべて
Meaning
all things; the whole lot
Example
He packed everything in his suitcase.
彼はすべてをスーツケースに詰め込んだ。
B1 verb /ɪˈstæblɪʃ/

establish

設立する
Meaning
To set up, create, or bring into existence something on a firm basis.
Example
The company plans to establish a new office in Dhaka.
その会社はダッカに新しいオフィスを設立する予定です。
C2 noun /ˌɛpɪˈdɜːrmɪs/

epidermis

皮膚の外層
Meaning
the outer layer of cells covering the body of an organism, especially the skin
Example
The epidermis protects the body from harmful bacteria.
エピデルミスは有害な細菌から体を守ります。
C2 verb /ɪˈmeɪʃieɪt/

emaciate

衰弱させる
Meaning
To make abnormally thin or weak, usually because of illness or lack of food.
Example
The prisoners were emaciated after months without proper food.
囚人たちは数ヶ月間適切な食事がなくて衰弱していました。
B2 noun /ˌɛkskləˈmeɪʃən/

exclamation

感嘆
Meaning
A sudden cry or remark expressing strong emotion or surprise.
Example
She let out an exclamation of joy when she heard the news.
彼女はそのニュースを聞いて、喜びの感嘆を漏らしました。
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。
C2 noun /ˈel.ɪ.fənt ˈæp.əl/

Elephant Apple

エレファントアップル
Meaning
a tropical fruit with a hard shell and acidic flesh
Example
Elephant apple is used to make delicious jams and pickles.
エレファントアップルは、美味しいジャムやピクルスを作るために使用されます。
C1 verb /ɪˈdʒektɪd/

ejected

eject
Meaning
to force someone or something to leave a place; to push or throw something out forcefully
Example
The pilot was ejected from the aircraft during the emergency.
パイロットは緊急時に飛行機から eject されました。
B1 noun /ɪɡˈzɪs.təns/

Existence

存在
Meaning
the fact or state of living or having objective reality; being alive
Example
Scientists are searching for evidence of life's existence on other planets.
科学者たちは他の惑星で生命の存在の証拠を探しています。
C2 verb /ɪˈvɪns/

evince

示す
Meaning
to show or demonstrate clearly
Example
She evinced her interest in the project through active participation.
彼女は積極的な参加を通じてそのプロジェクトに対する関心を示した。
B1 noun /ɪˈkɒnəmɪst/

economist

経済学者
Meaning
A person who studies or is an expert in economics.
Example
The economist predicted a rise in inflation.
経済学者はインフレの上昇を予測しました。
C2 noun /ˌɛpɪzəʊˈɒtɪk/

epizootic

動物伝染病
Meaning
An outbreak of disease affecting many animals of one kind at the same time.
Example
The farmer feared an epizootic might wipe out his cattle.
農家は、動物伝染病が彼の家畜を壊すかもしれないと恐れていました。
B2 noun ɪˈmɪʃ.ən

emission

排出
Meaning
The release or discharge of gases, particles, or other substances into the environment.
Example
Car manufacturers are reducing carbon emissions.
自動車メーカーはカーボン排出を減らしています。
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 /ɪkˈskɜːsɪv/

excursive

逸脱した
Meaning
Tending to digress or wander; moving away from the main subject.
Example
His excursive lecture left the students confused about the main topic.
彼の逸脱した講義は、学生たちを主題について混乱させました。
A2 noun /ˈɪər.ɪŋ/

Ear-ring

イヤリング
Meaning
a piece of jewelry worn on the earlobe or ear
Example
Her diamond earrings caught everyone's attention.
彼女のダイヤモンドのイヤリングは、みんなの注目を集めました。
C1 adjective ɪˌlektrəʊmæɡˈnetɪk

electromagnetic

電磁的
Meaning
Relating to both electricity and magnetism or their interaction.
Example
Electromagnetic forces repel protons.
電磁力は陽子を反発させる。
C1 adjective /ɪkˈstreɪ.ni.əs/

extraneous

無関係
Meaning
Not directly related or essential to the matter at hand; irrelevant.
Example
The editor removed extraneous details from the report.
編集者は報告書から無関係な詳細を削除しました。
C1 adjective /ɪˈlɪptɪkl/

elliptical

楕円形の
Meaning
Having the shape of an ellipse; also, a style of speech that is concise and sometimes obscure.
Example
The planet follows an elliptical orbit around the sun.
その惑星は太陽の周りをエリプティカルな軌道で回っています。
C1 noun /ˈɪrˌplʌɡ/

earplug

イヤープラグ
Meaning
a device inserted into the ear to block out noise or water
Example
He wore earplugs to sleep during the noisy night.
彼は騒がしい夜に寝るためにイヤープラグを着けました。
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 noun /ˌɛksaɪˈteɪʃən/

excitation

興奮
Meaning
a state of great excitement or the process of stimulating activity
Example
The news created great excitation among the fans.
そのニュースはファンの間で大きな興奮を引き起こしました。
A1 pronoun /ˈɛvrɪwʌn/

everyone

みんな
Meaning
every person; all people
Example
Everyone must bring their own lunch.
みんな自分のランチを持ってこなければならない。
C2 noun /ˌɛləˈkjuːʃn/

elocution

弁論術
Meaning
The skill of clear and expressive speech, especially in public speaking.
Example
She improved her elocution through constant practice.
彼女は継続的な練習を通じて弁論術を向上させた。
C2 noun /ˈɛnsaɪn/

ensign

旗
Meaning
A flag or standard, especially a military or naval one indicating nationality; also a junior officer in the navy or coast guard.
Example
The ship raised its national ensign before leaving the harbor.
その船は港を出る前に国旗を掲げました。
C1 adjective ɛnˈdɛm.ɪk

endemic

固有
Meaning
Native and restricted to a certain place.
Example
The Bengal tiger is endemic to the Indian subcontinent.
ベンガルタイガーはインド亜大陸に固有です。
C2 noun /juːˌtrɑː.fɪˈkeɪ.ʃən/

eutrophication

湖やその他の水域における栄養素の過剰
Meaning
Excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.
Example
Excess fertilizers lead to eutrophication in lakes.
過剰な肥料は湖におけるユートロフィケーションを引き起こします。
C2 verb /ɛkˈskɔːrieɪt/

excoriate

厳しく批判する
Meaning
To strongly criticize someone; to denounce severely.
Example
The critic excoriated the film for its poor script.
批評家はその映画の悪い脚本を厳しく批判しました。
C1 noun /ɪˈlɪpsɪs/

ellipsis

省略記号
Meaning
The omission of words in a sentence, represented by three dots (...).
Example
The writer used an ellipsis to show that part of the quote was omitted.
作家は引用部分が省略されたことを示すために省略記号を使用しました。
C2 noun /ˈiːɡres/

egress

出口
Meaning
The action of going out or leaving a place; an exit.
Example
The emergency door provided an egress for the trapped workers.
非常口は閉じ込められた作業員のために出口を提供しました。
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。
A2 noun /ɜːθ/

Earth

地球; 土;
Meaning
the planet on which we live; the ground or soil
Example
The astronauts could see Earth from their spacecraft in orbit.
宇宙飛行士たちは軌道上から地球を見ることができました。
B2 noun /ˈɪə.rə/

Era

時代
Meaning
a long and distinct period of history with a particular feature or characteristic
Example
The Renaissance was an era of great artistic and cultural achievement.
ルネサンスは大きな芸術的および文化的業績の時代でした。
C2 noun /ɛmˈpɪrɪˌsɪzəm/

empiricism

経験主義
Meaning
the theory that all knowledge is derived from sense-experience
Example
Empiricism argues that knowledge comes from experience and observation.
経験主義は、知識は経験と観察から来ると主張しています。
C1 verb /ɪˈnʌnsieɪt/

enunciate

明確に発音する
Meaning
to pronounce words clearly; to express an idea clearly
Example
The teacher asked him to enunciate each word.
先生は彼に各単語を明確に発音するように頼んだ。
C1 noun /ɪɡˈzɛkjətər/

executor

遺言執行者
Meaning
A person appointed to carry out the terms of someone's will after their death.
Example
The executor managed the estate according to the deceased’s wishes.
遺言執行者は故人の意志に従って財産を管理しました。
B2 verb /ˈɛskɔrt/

escort

付き添う
Meaning
to accompany someone; to guide or protect while going somewhere
Example
The guard escorted the visitor to the office.
ガードは訪問者をオフィスにエスコートしました。
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。
B1 adjective /ɪkˈspɛktɪd/

expected

予期された
Meaning
Regarded as likely to happen; anticipated or predicted.
Example
The unemployment rate is expected to decline further.
失業率はさらに低下すると予想されています。
C1 verb /ɪnˈtæŋɡəl/

entangle

Meaning
to become twisted together or caught in something; to involve in difficulties
Example
The fish got entangled in the net.
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 noun /ɪˈlɛk.trəʊ.laɪts/

electrolytes

電解質
Meaning
Minerals in body fluids that carry an electric charge and are essential for many bodily functions.
Example
Electrolytes help maintain proper fluid balance in the body.
電解質は体内の液体のバランスを維持するのに役立ちます。
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。
C1 verb /ɪmˈboʊl.dən/

embolden

勇気づける
Meaning
To give someone the courage or confidence to do something.
Example
The coach's words emboldened the team to play aggressively.
コーチの言葉はチームを積極的にプレーするように勇気づけました。
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。
C1 adjective /ɪˌlɪzəˈbiːθən/

elizabethan

エリザベス朝時代
Meaning
Relating to the reign of Queen Elizabeth I of England (1558–1603), especially the style of that period.
Example
Shakespeare wrote many of his plays during the Elizabethan era.
シェイクスピアはエリザベス朝時代に多くの戯曲を書きました。
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。
B1 noun /ˈempaɪər/

empire

帝国
Meaning
a group of countries or regions controlled by one ruler or government
Example
The Roman Empire lasted for centuries.
ローマ帝国は何世代にもわたって続きました。
B1 noun ɪˈkɒnəmiːz

economies

経済
Meaning
The wealth and resources of a country or region.
Example
Emerging economies have been growing rapidly over the past decade.
新興経済は過去10年間で急速に成長しています。
C2 noun /ˌɛksɪˈɡjuːɪti/

exiguity

不足
Meaning
the quality of being scanty or meager in amount
Example
The exiguity of resources made the project difficult to complete.
資源の不足がプロジェクトを完了するのを難しくしました。
B2 adjective /ɪˈven.tʃu.əl/

Eventual

最終的な
Meaning
happening or existing at the end of a process; final; ultimate
Example
The eventual outcome was better than expected.
最終的な結果は予想より良かった。
C1 noun /ˈɛpɪθɛt/

epithet

別名
Meaning
A descriptive phrase or word used to characterize someone or something, often as a nickname.
Example
He earned the epithet ‘The Great’ for his remarkable achievements.
彼はその素晴らしい業績により‘偉大な’別名を得ました。
C1 verb /ɪˈleɪt/

elate

喜ばせる
Meaning
To make someone very happy or proud.
Example
The success of the project elated the whole team.
プロジェクトの成功がチーム全体を喜ばせました。
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。
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。
C1 verb /ɪnˈdaʊ/

endow

Meaning
To provide with a quality, ability, or gift; to donate funds for a purpose.
Example
The university was endowed with a generous donation.
C2 verb /ɪkˈspʌndʒ/

expunge

削除
Meaning
To erase or remove completely, often something unwanted.
Example
He managed to expunge the embarrassing memory from his mind.
彼は恥ずかしい記憶を心から消し去ることに成功しました。
C1 noun ˈɛf.lu.ənt

effluent

排水または汚染された液体
Meaning
Liquid waste or sewage discharged into a river or the sea.
Example
Factory effluent contaminates nearby rivers and lakes.
工場の排水は近くの川や湖を汚染します。
A2 verb /ˈentər/

enter

入る
Meaning
to go into; to come or go inside
Example
Please knock before you enter the room.
部屋に入る前にノックしてください。
B2 noun /ˈɜːθ.wɜːm/

Earth-worm

ミミズ
Meaning
a segmented worm that lives in soil and helps decompose organic matter
Example
The gardener was happy to find many earthworms in the soil.
庭師は土壌でたくさんのミミズを見つけて喜んでいました。
C1 adjective /ˈɜːrθ.li/

Earthly

地上的; 世俗的; 物質的
Meaning
relating to the earth or human life; worldly; material rather than spiritual
Example
He focused on earthly pleasures rather than spiritual growth.
彼は精神的成長よりも地上的な楽しみに集中した。
C1 adjective /ɪˈleɪtɪd/

elated

非常に幸せ
Meaning
Extremely happy and excited.
Example
She was elated when she heard the good news.
良い知らせを聞いたとき、彼女は非常に幸せでした。
A2 noun /ɪˌlɛkˈtrɪsɪti/

electricity

電気
Meaning
A form of energy resulting from the existence of charged particles.
Example
The storm caused a power cut and we had no electricity.
嵐で停電し、電気がありませんでした。
C1 noun /ˈɑːnkɔːr/

encore

アンコール
Meaning
An additional performance demanded by an audience at the end of a show.
Example
The band returned to the stage for an encore.
バンドはアンコールのためにステージに戻った。
C1 noun ɪˌlæˈstɪs.ə.ti

elasticity

弾力性
Meaning
The responsiveness of demand or supply to changes in price.
Example
The elasticity of demand for luxury goods is high.
贅沢品の需要の弾力性は高い。
A1 noun /iːst/

east

東
Meaning
The direction from which the sun rises; one of the four cardinal points.
Example
The sun rises in the east.
太陽は東から昇ります。
C1 verb /ɪnˈθrɔːl/

enthrall

魅了する
Meaning
to captivate or hold someone’s attention completely
Example
The magician’s tricks enthralled the children.
マジシャンのトリックは子供たちを魅了しました。
C1 adjective /ɪɡˈzuːbərənt/

exuberant

興奮した
Meaning
full of energy, excitement, and cheerfulness
Example
The children were exuberant after winning the game.
子供たちはゲームに勝った後、興奮していました。
C1 noun /ˈjuːlədʒi/

eulogy

弔辞
Meaning
A speech or piece of writing that praises someone, especially after their death.
Example
Her brother delivered a heartfelt eulogy at the funeral.
彼女の兄は葬式で感動的な弔辞を述べました。
A1 pronoun /ˈɛvribɒdi/

everybody

皆
Meaning
all people; everyone
Example
Everybody enjoyed the party.
皆がパーティーを楽しんでいました。
C2 verb /ɪɡˈzɪləreɪt/

exhilarate

興奮させる
Meaning
To make someone feel very happy, animated, or excited.
Example
The mountain view exhilarated the travelers.
山の景色は旅行者を興奮させました。
C2 verb /ɪnˈtriːt/

entreat

懇願する
Meaning
To ask earnestly or beg someone to do something.
Example
She entreated him to stay a little longer.
彼女は彼にもう少し長くいてくれるように懇願した。
A2 noun /ˈel.ɪ.fənt/

Elephant

象
Meaning
a very large gray mammal with long curved teeth and a long nose called a trunk
Example
The elephant is the largest land animal in the world.
象は世界で最も大きな陸生動物です。
A2 noun /ˈɛləˌveɪtər/

elevator

エレベーター
Meaning
a machine that carries people or goods up and down between floors in a building
Example
We took the elevator to the tenth floor.
私たちはエレベーターで10階に行きました。
B2 verb, noun /ɪnˈdevər/

endeavour

努力する
Meaning
To try hard to achieve something; an attempt or effort
Example
She endeavoured to finish the project on time.
彼女は時間通りにプロジェクトを終わらせるために努力した。
B1 noun /ˌiːkəˈnɒmɪks/ or /ˌɛkəˈnɒmɪks/

economics

経済学
Meaning
The study of production, consumption, and transfer of wealth.
Example
He is studying economics at university.
彼は大学で経済学を学んでいます。
C2 noun /ˌɛmjʊˈleɪ.ʃən/

emulation

エミュレーション
Meaning
Reproducing something or following someone to achieve success.
Example
The software allows the emulation of old video games on modern devices.
そのソフトウェアは、古いビデオゲームを最新のデバイスでエミュレートすることを可能にします。
A2 noun /ɪˈlek.trɪk fæn/

Electric fan

電気ファン
Meaning
a device with rotating blades that creates airflow to cool or ventilate a room
Example
The electric fan keeps the room cool during hot summer days.
電気ファンは、暑い夏の日に部屋を涼しく保ちます。
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。
B2 noun /ˈek.oʊ/

Echo

エコー; 反響
Meaning
a sound that is reflected back; a repetition or imitation
Example
His voice created a clear echo in the empty cathedral.
彼の声は空の大聖堂で明確なエコーを作り出しました。
A1 adverb /ɛls/

else

他に何か
Meaning
In addition; besides.
Example
Is there anything else you need?
他に何か必要ですか?
B2 adjective ˈɛvɪdənt

evident

明白な
Meaning
Clearly seen or understood; obvious.
Example
The result was evident.
結果は明らかだった。
C2 verb /ɛnˈfiːbəl/

enfeeble

弱める
Meaning
To make weak or feeble; to deprive of strength.
Example
The long illness enfeebled the old man.
長い病気で老人は弱りました。
C1 verb /ɪnˈdʒen.dər/

engender

生じる
Meaning
To cause or give rise to a feeling, situation, or condition.
Example
The speech engendered hope among the people.
スピーチは人々の間に希望を生んだ。
C1 adjective /ˈɜːrstwaɪl/

erstwhile

かつての
Meaning
former or in the past
Example
They were erstwhile friends but no longer speak.
彼らはかつての友達でしたが、今は話しません。
C2 adjective /ˌɛkjʊˈmɛnɪkəl/

ecumenical

エキュメニカルな宗教的統一
Meaning
Promoting unity among different Christian churches or religions.
Example
The leaders gathered for an ecumenical conference to encourage dialogue.
リーダーたちは対話を促進するためにエキュメニカルな会議に集まりました。
C1 verb /ɪˈloʊp/

elope

駆け落ちする
Meaning
to run away secretly in order to get married, especially without parental consent
Example
The young couple decided to elope to another city.
若いカップルは別の都市に駆け落ちすることに決めました。
B2 noun /ɪˈfɛktɪvnəs/

effectiveness

効果
Meaning
the degree to which something is successful in producing a desired result.
Example
The effectiveness of the new policy is still being evaluated.
新しい政策の効果はまだ評価中です。
B2 noun /ˈem.ər.əld/

Emerald

エメラルド
Meaning
a bright green precious stone used in jewelry
Example
The emerald necklace sparkled in the sunlight.
エメラルドのネックレスは太陽の光で輝いていました。
C1 noun /ˈek.stə.si/

Ecstasy

エクスタシー
Meaning
an overwhelming feeling of great happiness or joyful excitement
Example
She was in complete ecstasy when she heard the good news.
彼女は良いニュースを聞いて完全にエクスタシーに浸っていました。
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 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 exclamation /juˈriːkə/

eureka

ユーレカ!
Meaning
An exclamation used to express a sudden discovery or realization.
Example
When the solution finally came to him, he shouted, 'Eureka!'
解決策がついに彼に浮かんだとき、彼は叫んだ。 'ユーレカ!'
B2 noun /ˈɜːrnər/

earner

稼ぐ人
Meaning
A person who earns money through work or business
Example
She is the primary earner in her family.
彼女は家族の主要な稼ぐ人です。
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。
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。
C1 verb /ɪnˈlaɪvən/

enliven

活気づける
Meaning
to make something more lively, interesting, or cheerful
Example
Her jokes helped enliven the dull meeting.
彼女の冗談は退屈な会議を活気づける手助けをした。
C2 noun /ɪˌkwɪvəˈkeɪʃən/

equivocation

あいまいな言葉の使用
Meaning
The use of ambiguous language to conceal the truth or to avoid committing oneself.
Example
The politician’s equivocation frustrated voters who wanted a clear answer.
政治家のあいまいな言葉は、明確な答えを求めていた有権者を失望させた。
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。
B2 noun ɪkˈspænʃən

expansion

拡張
Meaning
The action of becoming larger or more extensive; growth or development.
Example
Volunteering helps in the expansion of social networks.
ボランティア活動は、社会的ネットワークの拡張に役立ちます。
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 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 adverb /ɪkˈstɛnsɪvli/

extensively

広範囲に
Meaning
in a thorough or wide-ranging manner
Example
She traveled extensively across Europe for her research.
彼女は研究のためにヨーロッパを広範囲に旅行しました。