Vacillation
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C2 noun /ˌvæs.ɪˈleɪ.ʃən/

Vacillation

迷い
Meaning
the inability to decide between different opinions or actions; indecision
Example
His constant vacillation between career choices frustrated his parents.
彼のキャリア選択の間の絶え間ない揺れは、彼の親を困惑させました。
A1 verb /rɪˈmembə/

remember

覚える
Meaning
to bring a past event back into one's mind; to keep in memory
Example
I remember my first day at school.
私は学校の最初の日を覚えています。
B1 adjective /ˈkæʒ.u.əl/

Casual

リラックスして無頓着; 偶然の; 非公式
Meaning
relaxed and unconcerned; happening by chance; informal
Example
He wore casual clothes to the party.
彼はパーティーにカジュアルな服を着て行った。
C1 verb /ˈstaɪmi/

stymie

妨げる
Meaning
to prevent or hinder the progress of something
Example
The new regulations could stymie small businesses.
新しい規制は小規模なビジネスに障害をもたらす可能性があります。
B2 noun /skɛtʃ/

sketch

スケッチ
Meaning
a simple, rough drawing or outline
Example
He made a quick sketch of the landscape.
彼は風景の素早いスケッチを作成しました。
C2 adjective ˌɪn.ɪ.fɪˈkeɪ.ʃəs

inefficacious

効果がない
Meaning
Not producing any or the desired effect; ineffective.
Example
The treatment was inefficacious in curing the disease.
その治療法は病気の治癒に効果がありませんでした。
C2 noun /ˈterəpɪn/

terrapin

小さな淡水カメ
Meaning
a small freshwater turtle, especially one found in North America
Example
The terrapin slowly crawled into the pond.
テラピンはゆっくりと池に這い込んだ。
C1 adjective, noun /ˈdɛrəlɪkt/

derelict

放棄された
Meaning
in poor condition due to neglect or disuse; a homeless or neglected person
Example
The old factory stood derelict for decades.
古い工場は何十年も放置されていました。
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。
B2 noun /ˌɑːrkiˈɑːlədʒi/

archaeology

考古学
Meaning
the study of human history and prehistory through excavation and analysis of artifacts, monuments, and other physical remains
Example
She studied archaeology to learn about ancient civilizations.
彼女は古代文明について学ぶために考古学を学びました。
B2 noun /ɡreɪs/

grace

優雅, エレガンス
Meaning
simple elegance or refined movement; goodwill and kindness
Example
She moved with grace across the stage.
彼女は舞台を優雅に歩いた。
C1 noun /ˈtæpəstri/

tapestry

Meaning
A piece of thick textile fabric with pictures or designs woven into it, often hung on walls.
Example
The museum displayed an ancient tapestry from the 15th century.
A2 noun /ˈstjuːdiəʊ/

studio

スタジオ
Meaning
a room where an artist, photographer, musician, or broadcaster works
Example
The singer recorded her new song in the studio.
歌手はスタジオで新しい曲を録音しました。
C2 adjective /ˌdɪsəˈfɛktɪd/

disaffected

不満な
Meaning
Dissatisfied and rebellious, especially against authority or leadership.
Example
The reforms were introduced to calm the disaffected youth.
改革は不満な若者を落ち着かせるために導入されました。
C2 verb /ˈhɑːrkən/

hearken

注意深く聞く
Meaning
To listen attentively; to give heed.
Example
He would hearken to his mentor’s advice before making decisions.
彼は意思決定を下す前に、メンターのアドバイスに耳を傾けた。
C2 adjective /ˈstɪdʒiən/

stygian

暗黒
Meaning
extremely dark, gloomy, or forbidding
Example
They walked through the stygian cave with torches.
彼らは松明を持って暗黒の洞窟を歩いていました。
C2 noun /proʊˈsiː.ni.əm/

proscenium

プロセニアム
Meaning
the part of a theater stage in front of the curtain; the arch framing the stage
Example
The actors bowed at the proscenium before leaving the stage.
俳優たちは舞台を離れる前にプロセニアムでお辞儀をした。
C1 adjective /ˈstoʊɪk/

stoic

冷静な, 無感情な
Meaning
Showing little or no emotion, even in difficult situations.
Example
She remained stoic during the crisis, never showing fear or panic.
彼女は危機の間、冷静で恐怖やパニックを示さなかった。
B1 noun /meɪt/

mate

友達, 相棒
Meaning
a friend or companion; a partner in marriage or reproduction
Example
He went fishing with his old school mate.
彼は古い学校の友達と釣りに行きました。
C1 noun əˌkred.ɪˈteɪ.ʃən

accreditation

認定
Meaning
The action or process of officially recognizing someone or something as having a particular status or being qualified to perform a particular activity.
Example
Accreditation ensures institutional credibility.
認定は組織の信頼性を保証します。
A2 noun /hɪl/

Hill

小高い丘; 小山
Meaning
a naturally raised area of land, not as high or craggy as a mountain
Example
The children enjoyed rolling down the grassy hill behind their house during summer vacation.
子供たちは夏休みに家の裏の草むらの丘を転がるのが好きでした。
C1 adjective ˈɒptɪmaɪzd

optimized

最適化, 改善, より効率的
Meaning
Made as fully perfect, functional, or effective as possible; improved to achieve maximum efficiency.
Example
The system has been optimized for faster performance.
システムはより速いパフォーマンスのために最適化されました。
C1 verb /reɪz/

raze

取り壊す
Meaning
To completely destroy or demolish something, especially a building.
Example
The old factory was razed to make way for new apartments.
古い工場は新しいアパートメントのために取り壊されました。
C1 noun, verb /ˈskʌf.əl/

scuffle

乱闘
Meaning
a short, confused fight or struggle; to engage in such a fight
Example
Two players scuffled on the field after the foul.
ファウルの後、二人の選手がフィールドで殴り合った。
C2 verb /kəˈraʊz/

carouse

騒いで飲む
Meaning
to drink and enjoy oneself noisily, often with others
Example
They stayed up all night to carouse after the victory.
彼らは勝利の後、一晩中騒いで飲んでいた。
C1 noun ɔːˈstɛr.ɪ.ti

austerity

緊縮
Meaning
Simple and disciplined lifestyle, avoiding luxury.
Example
The government implemented austerity measures to reduce expenses.
政府は支出を削減するために緊縮策を実施した。
B2 noun /ˈmeɪnˌlænd/

mainland

Meaning
the principal landmass of a country or continent, as opposed to the surrounding islands
Example
The mainland of Australia is home to most of its population.
B2 adverb /ˈpjʊərli/

purely

純粋に
Meaning
only and completely; entirely
Example
The decision was purely based on economic factors.
その決定は完全に経済的な要因に基づいていました。
C1 adjective /ˌʃoʊ.vəˈnɪs.tɪk/

chauvinistic

ショービニズム
Meaning
Displaying or characterized by excessive or prejudiced loyalty or support, especially towards one's own gender or group.
Example
His chauvinistic attitude alienated many of his female colleagues.
彼のショウビニスティックな態度は多くの女性の同僚を疎外した。
B1 verb /dɪˈklaɪn/

decline

減少する
Meaning
To become smaller, fewer, or less; to decrease gradually.
Example
The unemployment rate continues to decline.
失業率は減少し続けています。
C1 noun /riˈæktənt/

reactant

Meaning
A substance that takes part in and undergoes change during a chemical reaction.
Example
Oxygen is a reactant in the process of combustion.
C1 noun /ˈkænən/

canon

規範
Meaning
A general law, rule, principle, or collection of sacred books accepted as genuine.
Example
The book is now considered part of the literary canon.
その本は現在、文学の規範の一部と見なされています。
C2 noun /ˈnaɪəlɪst/

nihilist

ニヒリスト
Meaning
A person who rejects all religious and moral principles, often believing that life is meaningless.
Example
He was called a nihilist for rejecting all social norms.
彼はすべての社会的規範を拒否したため、ニヒリストと呼ばれました。
C1 noun /ˈstaɪpend/

Stipend

奨学金
Meaning
a fixed regular sum paid as a salary or allowance
Example
The research student receives a monthly stipend for living expenses.
研究学生は生活費のために毎月奨学金を受け取ります。
A1 determiner/pronoun /ˈɛni/

any

いずれかの
Meaning
one, some, or all, without specifying which
Example
Do you have any questions?
何か質問はありますか？
C1 adjective /ɪˈklɛktɪk/

eclectic

エクレクティック
Meaning
Selecting or deriving ideas, styles, or tastes from a broad and diverse range of sources.
Example
Her taste in music is eclectic, ranging from classical to hip-hop.
彼女の音楽の好みはエクレクティックで、クラシックからヒップホップまで幅広いです。
C1 verb ˈflʌk.tʃu.eɪt

fluctuate

変動する
Meaning
To regularly increase or decrease.
Example
Stock prices fluctuate due to market conditions.
株価は市場の状況によって変動します。
B1 noun /ˈpæsɪdʒ/

passage

狭い通路; 断片/引用; 一つの状態や場所から他の場所へ移動するプロセス
Meaning
a narrow way through or between; a section of text or music; the process of moving from one state or place to another
Example
The narrow passage led from the courtyard to the library.
狭い通路は中庭から図書館へと続いていた。
C1 noun /mɪˈlɪʃə/

militia

民兵
Meaning
a group of ordinary people who are trained to act as soldiers in emergencies
Example
The village formed a militia to defend against attacks.
村は攻撃から守るために民兵を結成した。
C2 adjective /rɪˈmɪs/

remiss

怠慢
Meaning
Negligent in performing a duty or responsibility.
Example
The manager was remiss in not checking the financial reports carefully.
マネージャーは財務報告書を慎重に確認しなかったことで怠慢だった。
C1 noun /ˈnaɪ.tɪŋ.ɡeɪl/

Nightingale

ナイチンゲール
Meaning
small songbird known for its beautiful singing, especially at night
Example
The nightingale sang sweetly in the moonlight.
ナイチンゲールは月明かりの中で甘美に歌った。
C2 verb /ˈræŋ.kəl/

rankle

イライラさせる
Meaning
To cause continuing annoyance or resentment.
Example
His unfair criticism continued to rankle her for days.
彼の不公平な批判は何日も彼女をイライラさせ続けた。
A2 noun /pərˈmɪʃən/

permission

許可
Meaning
the action of allowing or granting consent
Example
You need permission to enter the restricted area.
制限区域に入るには許可が必要です。
A2 noun /reɪs/

race

レース
Meaning
a competition of speed, or a group of people with similar characteristics
Example
The race was very exciting, with many competitors.
レースは非常にエキサイティングで、たくさんの競技者がいました。
B2 verb /riːˈɔːrɡənaɪz/

reorganize

再編成する
Meaning
to arrange something again in a different way for greater efficiency or order
Example
The manager decided to reorganize the team structure.
マネージャーはチームの構造を再編成することに決めました。
B2 verb /ˈkeɪtər/

cater

Meaning
To provide food, drinks, or services, usually for an event or group.
Example
The company catered the wedding reception.
A2 verb; adjective /broʊk/

broke

壊した；無一文
Meaning
past tense of break; having no money or being financially poor
Example
I broke my phone last night and now I’m completely broke.
昨夜スマホを壊してしまい、今は無一文です。
C1 adjective ˈɪn.tər.ɪm

interim

暫定的
Meaning
In or for the intervening period; provisional or temporary.
Example
Interim governments manage transitional phases.
暫定政府は移行段階を管理します。
B2 adjective /rɪˈsɔːrsfəl/

resourceful

Meaning
Having the ability to find quick and clever ways to overcome difficulties.
Example
She is very resourceful when it comes to solving unexpected problems.
B2 noun /ˈɔːrɡənaɪzər/

organizer

主催者
Meaning
a person who arranges or coordinates activities, events, or groups; a tool or item used to keep things in order
Example
She worked as the main organizer of the international conference.
彼女は国際会議の主要な主催者だった。
C2 noun /ˈpɔːpərɪzəm/

pauperism

貧困
Meaning
The state of being extremely poor.
Example
The country struggled with rising pauperism in the 19th century.
その国は19世紀に増大する貧困と戦っていました。
C2 noun /ˈwɒrən/

warren

ウサギの巣穴のネットワーク
Meaning
A network of interconnected rabbit burrows; also used metaphorically for a densely populated building or district.
Example
The old part of the city is a warren of narrow streets.
街の古い部分は、狭い通りが入り組んだ迷路のようです。
C2 noun /ˈstætɪks/

statics

静力学
Meaning
The branch of mechanics dealing with bodies at rest and forces in equilibrium.
Example
She is studying statics as part of her engineering course.
彼女は工学のコースの一環として静力学を学んでいます。
C1 verb /ɪˈluːmɪneɪt/

illuminate

照らす
Meaning
To light up or make something clearer.
Example
Streetlights illuminate the road at night.
街路灯が夜に道路を照らします。
C1 verb /rɪˈtɔːrt/

retort

反論
Meaning
To reply quickly or sharply, often in a witty or angry manner.
Example
He quickly retorted that he was not to blame.
彼は素早く反論した、彼が悪くないと言った。
A1 verb /kætʃ/

catch

キャッチする
Meaning
to grab something that is moving; to get a disease; to understand
Example
Can you catch the ball I'm throwing?
投げているボールをキャッチできますか？
C1 noun /fjuːd/

feud

争い, 敵意
Meaning
a prolonged and bitter quarrel or conflict, often between families or groups
Example
The two families have been in a feud for generations.
二つの家族は世代を超えて争い続けています。
B2 verb /ˈresəl/

wrestle

レスリング
Meaning
to fight by grappling and trying to throw down an opponent; to struggle with a problem
Example
The children like to wrestle on the playground.
子供たちは遊び場でレスリングするのが好きです。
A2 noun /bɪər/

beer

ビール
Meaning
An alcoholic drink made from yeast-fermented malt flavored with hops.
Example
He ordered a glass of cold beer at the bar.
彼はバーで冷たいビールを注文した。
C1 noun /səˈbætɪkəl/

sabbatical

学習や旅行のための休暇
Meaning
A period of paid leave granted to a teacher or worker for study or travel, traditionally every seventh year.
Example
She took a sabbatical to research her new book.
彼女は新しい本を研究するためにサバティカルを取った。
B1 adjective /rɪˈlækst/

relaxed

リラックスした
Meaning
free from tension or stress; calm and comfortable
Example
She felt relaxed after listening to soft music.
柔らかい音楽を聞いて、彼女はリラックスした。
C1 noun /rɪˈliːf treɪn/

Relief Train

救援列車
Meaning
a train that carries emergency supplies and aid to disaster-affected areas
Example
The relief train arrived with food and medical supplies for the flood victims.
救援列車は洪水の被害者のために食料と医療物資を運んできました。
C1 verb /ˌdɪsɪmˈbɑːrk/

disembark

降りる
Meaning
To leave a ship, aircraft, or other vehicle.
Example
The passengers disembarked from the plane after landing.
乗客は着陸後、飛行機から降りました。
B1 noun /tɜːmz/

terms

条件
Meaning
plural of term; conditions or rules in a contract or agreement
Example
The terms of the agreement are clearly outlined in the contract.
契約条件は契約書に明確に記載されています。
C1 noun /ˈskrɪmɪdʒ/

scrimmage

練習試合
Meaning
A practice game or informal match, often in sports, especially football.
Example
The team had a scrimmage before the official season started.
チームは公式シーズンが始まる前に練習試合を行いました。
B2 adjective /ʌnˈberəbəl/

Unbearable

耐えられない
Meaning
too painful, annoying, or unpleasant to tolerate; impossible to endure
Example
The heat in the desert was unbearable.
砂漠の暑さは耐えられなかった。
B2 adjective /fɔːrˈsiːəbl/

foreseeable

予測可能な
Meaning
Able to be predicted or expected in advance
Example
The company is unlikely to make changes in the foreseeable future.
その会社は予測可能な未来において変化を起こす可能性は低い。
C2 noun /ˌkɒnsæŋˈɡwɪnɪti/

consanguinity

血縁関係
Meaning
The fact of being descended from the same ancestor; blood relationship.
Example
The degree of consanguinity was important in inheritance laws.
相続法では、血縁関係の程度が重要でした。
C1 adjective /ʌnˈsɜːrvɪsəbəl/

Unserviceable

使えない; 故障した
Meaning
not in working order; unable to be used; defective
Example
The old computer became unserviceable after the system crash.
古いコンピュータはシステムクラッシュ後、使えなくなりました。
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。
B2 verb /skwiːz/

squeeze

絞る
Meaning
to press something firmly, especially from all sides in order to extract or compress it
Example
She squeezed the toothpaste to get the last bit.
彼女は歯磨き粉のチューブを絞って、最後の一滴を出しました。
C2 noun /ˌmɪsæprɪˈhɛnʃən/

misapprehension

誤解
Meaning
a mistaken belief or misunderstanding
Example
There is a common misapprehension about the causes of the disease.
病気の原因についての一般的な誤解がある。
B2 adjective /ˌɪnstɪˈtjuːʃənl/

institutional

制度的
Meaning
Relating to an organization or established practice.
Example
The government made several institutional reforms in education.
政府は教育においていくつかの制度的改革を実施しました。
C1 adjective /traɪt/

trite

陳腐な
Meaning
Overused and lacking originality.
Example
The speech was full of trite phrases.
スピーチは陳腐なフレーズでいっぱいだった。
C1 adjective /ʌnˈdɔːntɪd/

Undaunted

不屈の; 勇敢な; 断固たる;
Meaning
not intimidated or discouraged by difficulty, danger, or disappointment
Example
Despite the setbacks, she remained undaunted in pursuing her goals.
挫折にもかかわらず、彼女は目標を追い続ける中で不屈であり続けた。
B1 noun /ˈmoʊ.ʃən/

Motion

動き; 移動の行動
Meaning
the action of moving or being moved; a formal proposal
Example
The car was in constant motion during the journey.
その車は旅の間、常に動いていました。
C1 noun /ˈsɛpərətɪst/

separatist

分離主義者
Meaning
A person who supports the separation of a group from a larger body, often for political or cultural independence.
Example
The separatist group demanded independence from the central government.
分離主義者グループは中央政府からの独立を要求した。
C1 noun /ˌædʒ.ɪˈteɪ.ʃən/

agitation

動揺
Meaning
a state of nervousness, excitement, or unrest; or action of stirring up public concern
Example
There was visible agitation among the crowd.
群衆の中には明らかな動揺がありました。
A2 verb /ɪkˈspleɪn/

explain

説明する
Meaning
to make something clear or easy to understand by describing it in more detail
Example
The teacher explained the difficult concept to the students.
教師は生徒たちにその難しい概念を説明しました。
C1 adjective /ˈkɔː.zəl/

causal

因果的
Meaning
relating to or acting as a cause
Example
There is a causal link between smoking and cancer.
喫煙と癌との間には因果関係があります。
B2 noun /ˌsɜːrtɪfɪˈkeɪʃən/

certification

認定
Meaning
the process of officially recognizing or confirming that something or someone meets required standards; an official document proving qualification
Example
She received her professional certification after completing the training program.
彼女は研修プログラムを修了した後、専門的な認定を取得しました。
C1 noun /ˈʃær.ən fruːt/

Sharon fruit

シャロンフルーツ
Meaning
a sweet orange persimmon fruit that can be eaten when firm
Example
The Sharon fruit is sweet and can be eaten like an apple.
シャロンフルーツは甘く、リンゴのように食べることができます。
B1 adverb /ˈtʃɪəfəli/

cheerfully

陽気に
Meaning
in a happy and positive manner; with visible good spirits
Example
She greeted everyone cheerfully despite the long day.
長い一日にもかかわらず、彼女は陽気に皆に挨拶した。
B1 noun ˌkɒnsənˈtreɪʃən

concentration

集中
Meaning
The action or power of focusing one's attention or mental effort on a particular object or activity
Example
Concentration is key to mastering any skill.
集中はどんなスキルでも習得するための鍵です。
C1 adjective, verb, noun /ˈkaʊntərfɪt/

counterfeit

偽造
Meaning
made to look like something genuine in order to deceive
Example
The police seized a batch of counterfeit currency.
警察は偽札の一群を押収しました。
C1 noun /ˈkætərækt/

cataract

白内障 / 滝
Meaning
A medical condition causing clouding of the eye's lens; also a large waterfall.
Example
The old man suffered from cataracts in both eyes.
その高齢の男性は両目に白内障を患っていました。
B2 verb /ɪˈnɪʃieɪt/

initiate

開始する
Meaning
to begin or start; to introduce someone to a new activity
Example
The company will initiate a new training program.
会社は新しい研修プログラムを開始します。
C2 noun /ˈprɒsɪlaɪt/

proselyte

改宗者
Meaning
A person who has converted from one belief, opinion, or religion to another.
Example
She became a proselyte after converting to a new faith.
彼女は新しい信仰に改宗した後、改宗者になった。
C2 adjective /ˈdɛsəlˌtɔːri/

desultory

無秩序な
Meaning
lacking a clear plan, purpose, or enthusiasm
Example
His desultory conversation bored the audience.
彼の無秩序な会話は観客を退屈させた。
B2 verb /ˈnæreɪt/

narrate

物語る
Meaning
To tell a story or describe events, often in detail.
Example
She will narrate the events of her journey to the audience.
彼女は観客に自分の旅の出来事を語るでしょう。
C1 noun kənˈfɔː.mə.ti

conformity

順応、適合、従順
Meaning
Compliance with standards, rules, or laws. Behavior in accordance with socially accepted conventions.
Example
Strict conformity to the rules ensures order in society.
規則の厳格な順守は社会の秩序を保証します。
C1 adjective /ɪnˈdʒʊəriəs/

injurious

有害な
Meaning
Causing or likely to cause harm or damage.
Example
Smoking is injurious to health.
喫煙は健康に有害です。
A1 adverb /ˈmeɪbi/

maybe

たぶん
Meaning
used to express possibility or uncertainty
Example
Maybe we will go to the park tomorrow.
たぶん明日公園に行くでしょう。
C2 adjective /ˈsɪlieɪtɪd/

ciliated

繊毛を持つ
Meaning
Having minute hairlike projections (cilia) on the surface of cells or organisms.
Example
The ciliated cells in the respiratory tract help move mucus out of the lungs.
呼吸器官の繊毛細胞は粘液を肺から外に出すのを助けます。
B2 verb /əbˈteɪn/

obtain

取得する
Meaning
to get or acquire something
Example
You need to obtain a visa before traveling abroad.
あなたは海外に行く前にビザを取得する必要があります。
C1 noun /ˌoʊvərprəˈdʌkʃən/

overproduction

過剰生産
Meaning
The act of producing more of something than is needed or can be consumed.
Example
The economic crisis was caused by the overproduction of goods.
経済危機は商品の過剰生産によって引き起こされた。
C1 noun /ˈkɒlərə/

cholera

Meaning
An infectious disease of the small intestine causing severe vomiting and diarrhea.
Example
The village suffered an outbreak of cholera after the flood.
C1 noun /ˈpiːɒn/

peon

ピオン
Meaning
a low-ranking worker, often performing menial tasks
Example
The office peon delivered the files to each department.
オフィスのピオンは各部署にファイルを届けました。
C1 adjective /ˈsʌn.dri/

sundry

雑多な
Meaning
Various or miscellaneous.
Example
The shop sells fruits, clothes, and sundry items.
その店は果物、衣類、そして雑多な商品を販売しています。
C2 adjective /əbˈstrɛpərəs/

obstreperous

騒がしくて制御が難しい
Meaning
Noisy and difficult to control.
Example
The obstreperous students disrupted the class.
騒がしい学生たちが授業を妨害した。
B1 adverb /ˈpɜr.sən.ə.li/

Personally

個人的に; 私の意見では; 自分のために; 自分自身で
Meaning
as a person; in one's own opinion; for oneself; in person
Example
Personally, I think the movie was excellent, though others disagree.
個人的に言うと、その映画は素晴らしいと思いますが、他の人は賛成していません。
C2 noun /pərˈsɪpiəns/

percipience

洞察力
Meaning
The ability to perceive, understand, or notice things quickly.
Example
His percipience in reading people made him a great negotiator.
人々を読む彼の洞察力は、彼を素晴らしい交渉者にしました。
C1 noun /ˈpetɪkoʊt/

Petti-coat

ペチコート
Meaning
an undergarment worn by women under a dress or skirt
Example
She wore a white petticoat under her dress.
彼女はドレスの下に白いペティコートを着ていました。
C2 verb /ˈæntɪdeɪtɪd/

antedated

以前の日付
Meaning
assigned to an earlier date than the actual one; happened earlier
Example
The letter was antedated to appear more official.
手紙はもっと公式に見えるように日付が遡って記入されました。
B2 noun /ˈwɜːrkɪŋ mæn/

working-man

労働者
Meaning
a man engaged in manual labor or industrial work, often considered as part of the working class
Example
The working-man fought hard for better wages and conditions.
労働者はより良い賃金と条件のために懸命に戦った。
B2 noun /ˈdiːlər/

dealer

ディーラー
Meaning
a person or business that buys and sells goods; someone who distributes
Example
The car dealer offered a discount to attract customers.
車のディーラーは顧客を引き付けるために割引を提供しました。
A1 noun /bɔːl/

ball

ボール
Meaning
a round object used in games or sports
Example
The children played with a ball in the park.
子供たちは公園でボールで遊びました。
C2 adjective /həˈmɑː.lə.ɡəs/

homologous

同源 (構造)
Meaning
Having the same relation, relative position, or structure, especially due to evolutionary origin.
Example
The wings of bats and the arms of humans are homologous structures.
コウモリの翼と人間の腕は同源の構造です。
B2 noun /dʒet/

Jet

ジェット機
Meaning
a rapid stream of liquid, gas, or flame; an aircraft powered by jet engines
Example
The jet took off smoothly and reached cruising altitude quickly.
ジェットは滑らかに離陸し、すぐに巡航高度に達しました。
C1 noun /əˈfɪn.ɪ.ti/

affinity

親近感
Meaning
A natural liking for or attraction to a person, thing, idea, etc.
Example
She has an affinity for classical music.
彼女はクラシック音楽に親近感を持っています。
C1 noun /ˌɛtɪˈmɒlədʒi/

etymology

語源学
Meaning
The study of the origin of words and how their meanings and forms have evolved.
Example
The etymology of the word 'salary' comes from the Latin word for salt.
'給与'という言葉の語源は、ラテン語の塩を意味する言葉から来ています。
C2 noun /ˈseɪnjər/

seignior

封建領主
Meaning
A feudal lord; a man of authority in medieval Europe.
Example
The seignior demanded taxes from the peasants.
封建領主は農民から税金を要求した。
A2 adjective /ˈkloʊ.sɪst/

closest

最も近い
Meaning
nearest in distance or relationship
Example
He is my closest friend.
彼は私の最も親しい友人です。
C1 noun /ˈmɜːrdʒər/

merger

合併
Meaning
The combination of two or more companies into a single entity.
Example
The merger of the two firms created the largest bank in the region.
2社の合併により、地域で最大の銀行が設立されました。
C1 adverb /ˌhɛdˈfɜrst/

headfirst

頭から
Meaning
With the head leading; in a reckless or hasty manner.
Example
He dived headfirst into the pool.
彼は頭から飛び込んだ。
C1 noun /plʊəˈrælɪti/

plurality

多数派または過半数
Meaning
the state of being multiple; the greater part or majority
Example
In the election, she won by a plurality of votes.
選挙では、彼女は票の多数で勝利しました。
C2 noun /θrɔːl/

thrall

Meaning
The state of being in someone's power or under strong influence; slavery or bondage.
Example
He was in thrall to the powerful leader.
C1 verb /ˈɪə.mɑːrk/

earmark

指定する
Meaning
To designate funds, resources, or time for a particular purpose.
Example
The government has earmarked funds for education.
政府は教育のための資金を指定しました。
A1 pronoun /ðɪs/

this

これ
Meaning
used to refer to a person or thing that is close or near in space, time, or thought
Example
This is my favorite book.
これは私のお気に入りの本です。
C2 adjective /prəˈpɪʃəs/

propitious

好ましい
Meaning
giving or indicating a good chance of success; favorable
Example
The sunny weather was a propitious start to the picnic.
晴れた天気はピクニックにとって好ましい始まりでした。
B1 noun /ˈjuːnɪvɜːrs/

Universe

宇宙
Meaning
all existing matter and space; the cosmos
Example
Scientists study the universe to understand its mysteries.
科学者たちは宇宙の謎を解明するために研究しています。