expropriation
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C2 noun /ɪkˌsprəʊ.priˈeɪ.ʃən/

expropriation

収用
Meaning
The act of government taking private property, also known as confiscation, nationalization, or seizure.
Example
The land expropriation led to disputes among landowners.
土地の収用は土地所有者間で争いを引き起こしました。
C1 adjective /ˌæntiˈneɪtl/

antenatal

産前
Meaning
Relating to the medical care and treatment given to a pregnant woman before the birth of her child.
Example
She attended regular antenatal checkups throughout her pregnancy.
彼女は妊娠中に定期的な産前検診を受けていました。
C2 verb /trænsˈfɪɡjʊər/

transfigure

変形する
Meaning
To transform the outward appearance or form, often in a way that elevates or glorifies.
Example
The artist managed to transfigure simple clay into a beautiful sculpture.
アーティストは単純な粘土を美しい彫刻に変えることができました。
C1 adjective /ˈplʌk.i/

plucky

勇敢
Meaning
having or showing courage and determination
Example
The plucky child rescued the kitten from the tree.
勇敢な子供が木から子猫を救いました。
C1 adjective ˈflʌd proʊn

flood-prone

洪水に見舞われやすい
Meaning
Susceptible to flooding; likely to experience floods frequently.
Example
Bangladesh is a flood-prone deltaic nation.
バングラデシュは洪水が発生しやすいデルタ国家です。
B2 verb /ˈɡæmbəl/

gamble

ギャンブル
Meaning
to bet money on games of chance; to take a risky action
Example
He decided to gamble his savings on the stock market.
彼は株式市場に貯金を賭けることに決めました。
C1 noun /ˈbʌrə, ˈbʊrə/

borough

区
Meaning
A town, district, or administrative division, especially one with its own local government.
Example
Brooklyn is a borough of New York City.
ブルックリンはニューヨーク市の区です。
B1 adjective /dɪˈtɜːrmɪnd/

determined

決心した
Meaning
Having firmly decided to do something and not letting anything stop you.
Example
She was determined to finish her studies despite many obstacles.
多くの障害があったにもかかわらず、彼女は学業を終わらせる決心をしていた。
C1 noun ˌmɒd.ɪ.fɪˈkeɪ.ʃənz

modifications

修正
Meaning
The action of making partial or minor changes to something.
Example
DNA modifications enable enhanced traits in crops.
DNAの修正により作物の特性が向上します。
B2 verb /prɪˈzjuːm/

presume

仮定する
Meaning
To suppose something is true without proof; to take for granted.
Example
I presume she has already left for the meeting.
私は彼女がすでに会議に出かけたと思います。
B1 adjective /ˌɪmpəˈlaɪt/

impolite

無礼
Meaning
Not showing good manners; rude.
Example
It is impolite to interrupt someone while they are speaking.
誰かが話しているときに邪魔をするのは失礼です。
B1 noun /ˈtreʒər/

Treasure

宝物
Meaning
a quantity of precious metals, gems, or other valuable objects; something of great worth or value
Example
The pirates buried their treasure on the island.
海賊たちは島に宝物を埋めました。
A2 noun ˈpʌblɪk træns ˈpɔːt

public transport

公共交通機関
Meaning
Transportation systems available for use by the general public, typically including buses, trains, and metros.
Example
Public transport systems are essential for reducing traffic congestion.
公共交通機関は交通渋滞を減らすために重要です。
B2 noun /ˈkæʒ.u.əl.ti/

Casualty

犠牲者; 負傷者; 損失
Meaning
a person killed or injured in a war or accident; a victim of circumstances
Example
The hospital treated many casualties from the car accident.
病院は車の事故からの多くの負傷者を治療しました。
A2 noun /fækt/

fact

事実
Meaning
A thing that is known or proved to be true
Example
It is a fact that the Earth orbits the Sun.
地球が太陽の周りを回っているのは事実です。
A2 noun /ɡæs/

gas

ガス
Meaning
A substance like air that is neither solid nor liquid and can expand freely.
Example
The balloon was filled with gas.
風船はガスで満たされていた。
B2 noun /ˈsɜːr.plʌs/

surplus

余剰
Meaning
An amount that is more than what is needed.
Example
The country has a surplus of food this year.
今年、その国には食料の余剰があります。
C2 noun /ˈpɪkəloʊ/

piccolo

小さなフルート
Meaning
a small flute, higher in pitch than the regular flute
Example
She played a lively tune on the piccolo during the concert.
彼女はコンサートでピッコロを使って活気のあるメロディを演奏しました。
C1 noun /ˈʃæsi/

chassis

車両のシャーシ
Meaning
the base frame of a vehicle or other wheeled machine
Example
The mechanic examined the car's chassis for damage.
整備士は車のシャーシに損傷がないか確認しました。
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 noun /diˈoʊ.dər.ənt/

Deodorant

デオドラント
Meaning
a substance that removes or conceals unpleasant smells, especially bodily odors
Example
She applied deodorant before going to the gym to stay fresh during workout.
彼女はジムに行く前に、トレーニング中にさっぱりとした状態を保つためにデオドラントを塗りました。
B2 noun /kənˈsɛnt/

consent

同意
Meaning
permission for something to happen or agreement to do something
Example
She gave her consent before the operation.
彼女は手術の前に同意を与えました。
B1 noun /ˈædʒɪktɪv/

adjective

形容詞
Meaning
a word that describes or modifies a noun by giving more information about its quality, quantity, or state
Example
The adjective in the sentence adds more detail to the noun.
形容詞は名詞に詳しい情報を加えます。
C1 noun /ˈkliː.vər/

Cleaver

大きな包丁
Meaning
a heavy knife with a broad blade used for chopping meat or vegetables
Example
The chef used a cleaver to chop the chicken bones.
シェフはチキンの骨を切るために大きな包丁を使いました。
B2 verb /dɪˈvoʊt/

devote

捧げる
Meaning
to give time, effort, or resources to something
Example
She devotes much of her time to helping the poor.
彼女は貧しい人々を助けるために多くの時間を捧げています。
A2 adverb /ˈtruːli/

Truly

本当に
Meaning
in accordance with fact or reality; genuinely
Example
She truly loves her family.
彼女は本当に家族を愛しています。
B2 verb ˈfɔːr.mjə.leɪt

formulate

策定する
Meaning
To create or develop a plan or idea clearly and specifically, to construct an idea or strategy clearly.
Example
The company must formulate a strategy for expansion.
会社は拡張戦略を策定する必要があります。
C2 adjective /prɪˈskrɪptɪbəl/

prescriptible

規定可能
Meaning
Capable of being prescribed or laid down as a rule or directive.
Example
Certain regulations are prescriptible under the law.
特定の規則は法律の下で規定可能です。
C2 adjective /ˌɪnfɪnɪˈtɛsɪməl/

infinitesimal

微細な
Meaning
Extremely small in size or amount; so tiny as to be almost negligible.
Example
The error was so infinitesimal that it didn’t affect the results.
そのエラーは非常に微細で、結果に影響を与えることはありませんでした。
C2 noun /kænt/

cant

偽善的な言葉
Meaning
Hypocritical and insincere talk, especially about moral or religious principles.
Example
The politician's speech was filled with cant about honesty and integrity.
その政治家の演説は、誠実さと誠実性についての偽善的な言葉で満ちていた。
C2 noun /ˈkɒntrətɑː̃/

contretemps

予期しない対立
Meaning
an unexpected and unfortunate event or disagreement; a minor dispute
Example
There was a small contretemps between the two colleagues during the meeting.
会議中、二人の同僚の間で小さな予期しない対立がありました。
B2 adjective /ˈkɒn.trər.i/

Contrary

反対の; 対立する;
Meaning
opposite in nature, direction, or meaning; completely different
Example
Contrary to popular belief, cats can be very social animals.
一般的な信念とは反対に、猫は非常に社交的な動物であることができます。
C1 noun /ˌtrɛpɪˈdeɪʃən/

trepidation

恐れ
Meaning
a feeling of fear or anxiety about something that may happen
Example
She opened the letter with some trepidation.
彼女は少し恐れを抱えて手紙を開けた。
C1 adjective /ˈtɛlˌteɪl/

telltale

明白な
Meaning
Revealing something that is usually hidden; giving away a secret or clue.
Example
The telltale signs of fatigue were visible on his face.
疲労の明白な兆候が彼の顔に現れていた。
C1 noun /ˈθʌroʊˌfɛr/

thoroughfare

大通り
Meaning
a main road or public highway that goes through a place
Example
The new mall is located along the main thoroughfare.
新しいショッピングモールは大通り沿いにあります。
C1 noun /prəˈspɛktəs/

prospectus

募集要項
Meaning
a printed document that advertises or describes a school, business, or investment offering
Example
The university sent out a prospectus to attract new students.
大学は新しい学生を引き付けるために募集要項を送った。
C2 noun /ˈkloʊtʃər/

cloture

討論終了手続き
Meaning
a procedure for ending a debate and taking a vote.
Example
The Senate invoked cloture to end the lengthy debate.
上院は長時間の討論を終わらせるためにクロチュールを適用しました。
C1 adjective /ˈsɪlkən/

Silken

絹の; 柔らかい; 滑らか;
Meaning
made of silk; smooth and soft like silk
Example
She wore a beautiful silken dress to the party.
彼女はパーティーに美しい絹のドレスを着ていきました。
A2 noun /ˈdɑrk.nəs/

Darkness

暗闇; 無知;
Meaning
the partial or total absence of light; wickedness or evil; ignorance or lack of knowledge
Example
The power outage plunged the entire city into darkness.
停電で町全体が暗闇に包まれた。
C1 noun /ɪmˈpjʊərəti/

impurity

不純物
Meaning
the state of being unclean or contaminated; a substance that makes something impure
Example
The scientist removed every impurity from the water sample.
科学者は水のサンプルからすべての不純物を取り除いた。
B1 noun /loʊn/

Loan

ローン
Meaning
a thing that is borrowed, especially a sum of money that is expected to be paid back with interest
Example
He took a loan to buy a new car.
彼は新しい車を買うためにローンを組みました。
B2 noun /rɪˈmeɪn.dər/

Remainder

残り; 余り
Meaning
the part that is left over; what remains after the other parts have been taken away
Example
The remainder of the food was stored in the refrigerator.
残りの食べ物は冷蔵庫に保存されました。
B1 noun /ˈlɪm.ɪt/

Limit

制限; 限界
Meaning
a point or level beyond which something does not or may not extend or pass; the greatest amount allowed
Example
There is a speed limit on this road.
この道には速度制限があります。
C2 verb /ɪˈstreɪndʒ/

estrange

Meaning
to cause someone to no longer be close or affectionate; to alienate
Example
His constant criticism began to estrange him from his friends.
B2 noun /ˈpleɪˌɔːf/

playoff

チャンピオン決定戦
Meaning
a series of games played to determine a champion among top teams
Example
The team qualified for the playoffs after a strong season.
チームは強いシーズン後にプレーオフに進出しました。
B1 noun ˌtɑːdʒ məˈhɑːl

Taj Mahal

タージ・マハル
Meaning
A famous mausoleum in India, considered one of the most beautiful structures ever built and a symbol of love.
Example
The Taj Mahal is considered one of the most beautiful structures ever built.
タージ・マハルはこれまでに建てられた中で最も美しい建造物の一つとされている。
C1 noun /sɛˈseɪʃən/

cessation

停止
Meaning
The fact or process of ending or being brought to an end.
Example
There was a temporary cessation of hostilities.
敵対行為は一時的に停止しました。
B1 noun ɡreɪt wɔːl əv ˈtʃaɪ.nə

Great Wall of China

万里の長城
Meaning
A massive ancient fortification system in China, built to protect against invasions and considered one of the most famous landmarks in the world.
Example
The Great Wall of China is one of the most famous landmarks in the world.
万里の長城は世界で最も有名なランドマークの一つです。
B1 noun /ʃɑːrk/

Shark

サメ
Meaning
a large marine fish with sharp teeth and a cartilaginous skeleton
Example
The shark is a powerful predator of the ocean.
サメは海の強力な捕食者です。
C2 noun /əˈkwaɪərmənt/

acquirement

取得; 習得
Meaning
the act of acquiring something; something that has been acquired, especially a skill or possession
Example
Language proficiency is an important acquirement for global careers.
語学力はグローバルなキャリアにとって重要な取得です。
C2 adjective /ˈek.wə.bəl/

Equable

冷静
Meaning
calm and even-tempered; not easily disturbed
Example
He maintained an equable temperament throughout the crisis.
彼は危機の間、冷静な気質を保ち続けた。
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 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。
C1 noun /ˈpær.ə.kiːt/

Parakeet

インコ
Meaning
a small colorful parrot with a long tail, often kept as a pet
Example
The green parakeet learned to say hello.
緑色のインコはこんにちはを言うことを学びました。
C2 adjective /ˌaɪsəʊˈθɜːrməl/

isothermal

等温
Meaning
Having or maintaining equal or constant temperature.
Example
The experiment was conducted under isothermal conditions.
実験は等温条件で行われました。
C1 adjective /səbˈvɜːrsɪv/

subversive

破壊的
Meaning
seeking or intended to undermine or overthrow an established system or authority
Example
The group was banned for its subversive activities.
そのグループは破壊的な活動のために禁止された。
C1 adjective /ˌfɪl.ænˈθrɒp.ɪk/

philanthropic

博愛主義的な
Meaning
showing concern for the welfare of others; generous and charitable
Example
She is known for her philanthropic activities in the city.
彼女は街での博愛活動で知られています。
C1 verb /daɪˈvɜːrdʒ/

diverge

分岐する
Meaning
to separate and go in different directions; to differ
Example
The two paths diverge at the fork in the road.
二つの道は交差点で分かれる。
A2 noun /wɜːrθ/

Worth

価値; 価格;
Meaning
the value equivalent to that of someone or something; the level at which someone or something deserves to be valued
Example
The painting is worth thousands of dollars.
その絵画は数千ドルの価値があります。
C2 adjective /ˈɒf.biːt/

offbeat

風変わり
Meaning
Unusual, unconventional, or different from the norm.
Example
She has a very offbeat sense of humor.
彼女はとても風変わりなユーモアを持っています。
C1 adjective dɪ ˈskrɛʃ.ən.er.i

discretionary

裁量の
Meaning
Available for use at the discretion of the user; not required or mandatory.
Example
He set aside some discretionary income for travel.
彼は旅行のためにいくらかの裁量所得を取っておいた。
B2 noun /plæˈtoʊ/

plateau

高原、平坦な土地、変化の少ない時期
Meaning
an elevated flat area of land or a period of little change
Example
After months of growth, sales reached a plateau.
数ヶ月の成長の後、売上はプラトーに達した。
C2 adjective /ˈtæsɪtɜrn/

taciturn

寡黙
Meaning
reserved or uncommunicative in speech; saying little
Example
He was a taciturn man who rarely spoke in meetings.
彼は会議でほとんど話さない寡黙な人だった。
C1 verb /ˈmjuːteɪt/

mutate

突然変異する
Meaning
To change or cause to change in form, nature, or character.
Example
The virus can mutate into a more dangerous strain.
ウイルスはより危険な株にミュートすることができます。
B2 adjective /ɪnˈvaɪrənmənt ˈfrɛndli/

environment-friendly

環境に優しい
Meaning
Designed or produced in a way that causes minimal harm to the environment, often using sustainable materials and processes that reduce ecological impact.
Example
Environment-friendly products are designed to reduce ecological damage.
環境に優しい製品は、環境へのダメージを減らすように設計されています。
A1 noun /mɑːm/

mom

ママ
Meaning
an informal word for mother
Example
My mom makes the best homemade food.
私のママは一番美味しい手作り料理を作る。
C1 noun /rɛnˈdɪʃən/

rendition

演奏
Meaning
a performance or interpretation of a piece of art, music, or text
Example
The singer gave a moving rendition of the classic song.
歌手はクラシックな歌の感動的な演奏を行いました。
B2 verb /snæp/

snap

折れる
Meaning
to break suddenly; to speak angrily; to take a photograph quickly
Example
The rope snapped under the weight.
ロープは重さで折れました。
C1 noun /ˈbaɪoʊˌsfɪr/

Biosphere

バイオスフィア
Meaning
the regions of the surface and atmosphere of the earth occupied by living organisms
Example
Climate change is affecting the entire biosphere.
気候変動はバイオスフィア全体に影響を与えています。
C1 verb /ˈmʌd.əl/

muddle

混乱させる
Meaning
to mix things up in a confused way or to make a mess of something
Example
He muddled the papers and couldn’t find the report.
彼は書類を混乱させ、報告書を見つけられなかった。
C1 adjective /ˈbrɪtl/

brittle

壊れやすい
Meaning
easily broken or cracked; hard but liable to break
Example
The glass was so brittle that it cracked easily.
ガラスはとても壊れやすくて、簡単に割れました。
C1 noun /fəˈsɑːd/

facade

ファサード
Meaning
The front of a building; a false or superficial appearance
Example
The building's glass facade reflected the sunset.
建物のガラスのファサードは日没を反映していた。
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 noun ɪɡˈzek.jə.tɪv

executive

執行機関
Meaning
The branch of government responsible for implementing and enforcing laws.
Example
The executive body enforces policies.
執行機関は政策を実行します。
C2 noun /ˈθɝː.moʊ.klaɪn/

thermocline

サーモクライン
Meaning
A layer in a body of water in which temperature changes rapidly with depth.
Example
The thermocline separates warm surface water from cold deep water.
サーモクラインは、暖かい表面水と冷たい深層水を分けます。
B1 phrasal verb /bloʊ aʊt/

blow out

吹き消す
Meaning
to extinguish by blowing; to fail suddenly or burst; to expand or exceed limits dramatically
Example
She blew out the candles on her birthday cake.
彼女は誕生日ケーキのろうそくを吹き消した。
C1 noun /ˈmæk.rəʊˌnjuː.tri.ənts/

macronutrients

マクロン栄養素
Meaning
Nutrients that are needed in large amounts to provide energy and building materials for the body, including carbohydrates, proteins, and fats.
Example
Proteins, fats, and carbohydrates are vital macronutrients.
タンパク質、脂肪、炭水化物は重要なマクロン栄養素です。
B1 noun /ˈdaɪ.mənd/

Diamond

ダイヤモンド
Meaning
a precious stone that is extremely hard and brilliant when cut
Example
She wore a diamond ring on her finger.
彼女は指にはダイヤモンドの指輪を着けていた。
C1 verb /prəˈlɪf.ə.reɪt/

proliferate

急速に増加する
Meaning
To increase rapidly in numbers; to grow or spread quickly and extensively.
Example
Startups tend to proliferate in a thriving economy.
スタートアップは、活況を呈している経済で急速に増加する傾向があります。
C1 noun /kəˈluːʒən/

collusion

共謀
Meaning
A secret agreement or cooperation, especially for an illegal or dishonest purpose.
Example
There was evidence of collusion between the officials and the contractors.
役人と契約者の間で共謀の証拠がありました。
C2 noun /ˈmɒkəsɪn/

moccasin

モカシン
Meaning
A soft leather shoe, traditionally worn by Native Americans, often made from deerskin.
Example
He slipped on a pair of comfortable moccasins before going outside.
彼は外に出る前に快適なモカシンを履きました。
C1 verb /ˈdaʊn.pleɪ/

downplay

軽視する
Meaning
to make something seem less important than it really is
Example
The company tried to downplay the risks of the new product.
会社は新しい製品のリスクを軽視しようとしました。
B1 noun /ˈtʃɛərˌwʊmən/

chairwoman

女性議長
Meaning
a woman who presides over a meeting, committee, or organization; a female leader of a board or council
Example
She was elected chairwoman of the company after years of experience.
彼女は長年の経験の後、その会社の女性議長に選ばれた。
B2 verb /ˈɪntɪɡreɪt/

integrate

統合する
Meaning
To combine or bring together into a unified whole.
Example
The new system integrates data from multiple sources.
新しいシステムは複数のソースからデータを統合します。
B1 noun /ɪnˈtɛnʃən/

intention

意図
Meaning
A plan, aim, or purpose behind an action.
Example
Her intention was to finish the project before the deadline.
彼女の意図はプロジェクトを締め切り前に終わらせることだった。
C1 noun /ˈpɛdɪɡriː/

pedigree

家系
Meaning
the recorded ancestry or lineage of a person, family, or animal; the history or origin of something
Example
The dog has a pedigree that traces back several generations.
その犬は何世代にもわたる家系を持っています。
B1 noun /hel/

Hell

地獄; 苦痛な状態; 極めて不快な経験
Meaning
a place regarded in various religions as a spiritual realm of evil and suffering; an extremely unpleasant experience
Example
Working in the factory during summer was absolute hell due to the extreme heat.
夏に工場で働くことは、極端な暑さのためにまさに地獄のようだった。
C1 verb /ɪmˈplɔːr/

implore

Meaning
To beg someone earnestly or desperately to do something.
Example
She implored him to stay with her.
B2 adjective /dɪsˈɡreɪsfəl/

Disgraceful

恥ずべき; 不名誉な; 非難に値する
Meaning
shameful; bringing dishonor; worthy of condemnation
Example
His disgraceful behavior shocked everyone at the party.
彼の恥ずべき行動はパーティーでみんなを驚かせました。
C2 noun /ˈdɛvɪlri/

devilry

悪戯
Meaning
Wicked or cruel behavior; mischievous actions.
Example
The children were full of devilry on Halloween night.
ハロウィンの夜、子供たちは悪戯でいっぱいだった。
C1 adjective ˈkʌm.bə.səm

cumbersome

重い、扱いにくい、運ぶのが難しい
Meaning
Heavy, unwieldy, difficult to handle or carry.
Example
The cumbersome luggage slowed him down.
重い荷物が彼を遅くした。
A1 verb /peɪnt/

paint

絵を描く
Meaning
to apply a colored substance to a surface
Example
She loves to paint landscapes in her free time.
彼女は自由時間に風景画を描くのが好きです。
B2 noun /əˈsʌmpʃən/

Assumption

仮定
Meaning
a thing that is accepted as true without proof; a supposition
Example
His assumption about the weather proved to be wrong.
天気に関する彼の仮定は間違っていることが証明されました。
C2 adjective /ˈpeɪli/

paly

縞模様
Meaning
striped with different colors, usually used in heraldry
Example
The knight’s shield was decorated with paly stripes of red and gold.
騎士の盾には赤と金の縞模様が飾られていた。
C1 noun /rɪˈpɛərə/

repairer

修理人
Meaning
a person whose job is to fix damaged or broken things
Example
The repairer fixed the broken washing machine quickly.
修理人は壊れた洗濯機をすぐに直した。
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。
C2 adjective /ˈkɑːrnəl/

carnal

肉体的
Meaning
Relating to physical, especially sexual, desires and appetites.
Example
The book explores the conflict between spiritual and carnal desires.
この本は精神的欲望と肉体的欲望の間の対立を探ります。
B1 noun /rɪst/

Wrist

手首
Meaning
the joint connecting the hand with the forearm
Example
He wore a watch on his wrist.
彼は手首に時計をしていた。
B2 noun /ˈtruːθ.fəl.nəs/

Truthfulness

正直
Meaning
the quality of being truthful; honesty and accuracy in what one says or does
Example
Her truthfulness in the investigation helped solve the case quickly.
調査における彼女の正直さが、事件を迅速に解決するのに役立ちました。
C1 verb /bɪˈmoʊn/

bemoan

嘆く
Meaning
To express discontent or sorrow over something.
Example
Critics bemoaned the lack of diversity in the film.
批評家たちは映画の多様性の欠如を嘆いた。
C1 adjective /ʌnˈtʃælɪndʒd/

Unchallenged

挑戦されていない; 反対なしに受け入れられた; ライバルなし
Meaning
not disputed or questioned; accepted without opposition; having no rival
Example
He remained the unchallenged champion for five years.
彼は5年間、挑戦されていないチャンピオンであり続けました。
C1 adjective /ˈvɛnərəbəl/

Venerable

尊敬すべき; 立派な
Meaning
deserving respect due to age, wisdom, or character; revered
Example
The venerable professor has taught at the university for fifty years.
その尊敬すべき教授は大学で50年間教えてきました。
C1 noun /ˌekspəˈzɪʃən/

exposition

説明 / 展覧会
Meaning
a detailed explanation or a large public exhibition
Example
The scientist gave a clear exposition of the theory.
科学者は理論を明確に説明しました。
C1 adjective /ɔːˈstɪə/

austere

厳格、簡素
Meaning
Severe or strict in manner, attitude, or appearance; plain and simple.
Example
The monk lived an austere life in the mountains.
修道士は山中で厳格な生活を送った。
C2 noun /ˈtrʌk.jʊ.ləns/

truculence

好戦的
Meaning
Aggressiveness or eagerness to fight.
Example
His speech was full of truculence and threats.
彼の演説は好戦的で脅しに満ちていた。
C1 noun /ˈledʒ.ər/

Ledger

元帳
Meaning
a book or other collection of financial accounts of a particular type
Example
The accountant updated the company ledger daily.
会計士は毎日会社の元帳を更新しました。
C2 adjective /ɒmˈnɪʃ.ənt/

Omniscient

全知の
Meaning
having complete knowledge; all-knowing
Example
The narrator in the novel appears to be omniscient, knowing every character's thoughts.
小説の語り手は全知であるかのようで、すべての登場人物の思考を知っている。
C1 adjective ˌæd.vɚˈser.i.əl

adversarial

対立的な
Meaning
Involving or characterized by conflict or opposition.
Example
The two companies have an adversarial relationship in the market.
その二つの会社は市場で対立的な関係を持っている。
C1 adjective /ˌpɜːrpənˈdɪkjələr/

perpendicular

垂直
Meaning
At an angle of 90 degrees to a given line, plane, or surface.
Example
The ladder was placed perpendicular to the ground for safety.
はしごは安全のために地面に対して垂直に配置されました。
B1 adjective /ˈsekənderi/

secondary

二次的
Meaning
Less important than something else; derived from or dependent on something primary.
Example
Safety is our primary concern, while speed is only secondary.
安全は私たちの最優先事項であり、速度は二次的なものです。
C2 noun /ˈjuːfəni/

euphony

ユーフォニー
Meaning
The quality of being pleasing to the ear, especially through harmonious combination of words.
Example
The orator's speech was full of euphony and rhythm.
演説者のスピーチはユーフォニーとリズムで満ちていた。
A1 noun /bed/

Bed

ベッド
Meaning
a piece of furniture for sleep or rest, typically a framework with a mattress
Example
She made her bed every morning before going to work.
彼女は毎朝仕事に行く前にベッドを整えます。
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。
B2 adjective /ˌʌn.əkˈsep.tə.bəl/

Unacceptable

受け入れられない
Meaning
not satisfactory or allowable; not acceptable
Example
The quality of work was completely unacceptable.
仕事の質は完全に受け入れられませんでした。
C2 verb /lʌɡ/

lug

Meaning
to carry or drag something heavy or cumbersome with effort
Example
He had to lug the suitcase up three flights of stairs.
B2 verb, noun /stæb/

stab

刺す
Meaning
to pierce or wound with a pointed weapon or object
Example
He was stabbed in the back during the altercation.
彼は口論中に背中を刺されました。
C1 adjective /əˈsɛndənt/

ascendant

上昇する、支配的な
Meaning
Rising in power or influence; dominant.
Example
She is an ascendant leader in the political party.
彼女は政治党の中で上昇するリーダーです。
A2 adverb /ˈstrɒŋɡli/

strongly

強く
Meaning
in a strong manner or to a great extent
Example
She strongly believes in the power of positive thinking.
彼女はポジティブな思考の力を強く信じています。
C2 adjective /kænˈtæŋ.kər.əs/

cantankerous

気難しい
Meaning
Bad-tempered, argumentative, and uncooperative.
Example
The cantankerous old man complained about everything.
その気難しい老人は何にでも不満を言った。
B2 verb /soʊk/

soak

浸す
Meaning
to make something completely wet by immersing it in liquid
Example
She soaked the clothes in water before washing them.
彼女は洗濯する前に服を水に浸しました。
C1 noun /ˈmɒn.ə.təʊn/

monotone

単調な声
Meaning
A continuous sound, especially of a person's voice, that does not rise and fall in pitch.
Example
The teacher's monotone made the lecture hard to follow.
教師のモノトーンが講義を聞き取るのを難しくした。