dyne
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C2 noun /daɪn/

dyne

力の単位（センチメートル・グラム・秒の単位系）
Meaning
A unit of force in the centimeter-gram-second (cgs) system equal to 10⁻⁵ newtons.
Example
The physicist measured the force in dynes.
物理学者はダインで力を測定しました。
C2 verb /dɪsˈbɑːr/

disbar

弁護士を法曹界から正式に除外する
Meaning
to officially remove a lawyer from the legal profession
Example
The corrupt lawyer was disbarred for unethical conduct.
腐敗した弁護士は非倫理的な行動により除外されました。
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。
C2 adjective /dɪˈluːsəri/

delusory

幻想的な
Meaning
Based on illusion; not real.
Example
He was filled with delusory hopes of becoming famous overnight.
彼は一夜にして有名になるという幻想的な希望に満ちていた。
C2 verb /dɪsˈroʊb/

disrobe

服を脱ぐ
Meaning
to remove one's clothes
Example
The monk disrobed before entering the river.
僧侶は川に入る前に衣服を脱いだ。
C2 verb /ˌdɪskəˈmoʊd/

discommode

邪魔する
Meaning
To cause inconvenience or trouble to someone.
Example
I hope my request does not discommode you.
私のリクエストがあなたに不便をかけないことを願っています。
C2 verb /dɪˈstreɪn/

distrain

差し押さえる
Meaning
to seize someone's property in order to obtain payment of rent or other money owed
Example
The landlord distrained the tenant's furniture for unpaid rent.
家主は未払いの家賃のために借家人の家具を差し押さえました。
C2 noun/verb /dɪsˈfeɪvər/

disfavor

不支持 / 不快
Meaning
disapproval or dislike; to regard with disapproval
Example
The new policy fell into disfavor with the public.
新しい政策は一般の人々の間で不評を買いました。
C2 noun /dɪˈfoʊliənt/

defoliant

Meaning
a chemical that causes leaves to drop from plants, often used in warfare or agriculture
Example
The army sprayed defoliant to clear the forest cover.
C2 verb /dɪˈspɔɪl/

despoil

略奪する
Meaning
To steal or violently remove valuable possessions from a place.
Example
The invaders despoiled the village during the war.
侵略者は戦争中に村を略奪しました。
C2 noun /dɪˈsɪstəns/

desistance

停止
Meaning
The act of stopping or ceasing from some action or behavior.
Example
The court urged his desistance from further unlawful activities.
裁判所は彼にさらなる違法行為から停止するよう促しました。
C2 verb /dɪˈbɔːtʃ/

debauch

堕落させる
Meaning
to corrupt morally; to lead into excessive indulgence in sensual pleasures
Example
The novel shows how wealth can debauch a person's character.
その小説は、どのように富が人の性格を堕落させるかを示しています。
C2 adjective /daɪˈdæktɪk/

didactic

教育的な
Meaning
Intended to teach, often with a moral lesson.
Example
The novel is not just entertaining but also didactic in nature.
その小説はただの娯楽ではなく、教育的な性質も持っている。
C2 noun /ˈdjʊərəns/

durance

監禁
Meaning
imprisonment or confinement
Example
The prisoner spent years in durance before his release.
囚人は解放される前に数年間監禁されていた。
C2 noun /ˈdɪktəm/

dictum

格言
Meaning
A formal pronouncement, authoritative statement, or maxim.
Example
The judge’s dictum clarified the principle of equality before the law.
裁判官の格言は法の前での平等の原則を明確にしました。
C2 verb /diːˈmoʊbəlaɪz/

demobilize

解散する
Meaning
To release from military service or to disband troops.
Example
The government decided to demobilize the army after the war.
政府は戦争後に軍隊を解散することを決定しました。
C2 noun /ˌdɪsprəˈpɔːrʃən/

disproportion

不均衡
Meaning
a lack of balance or symmetry; an inequality
Example
There is a clear disproportion between rich and poor in many societies.
多くの社会において、富裕層と貧困層の間に明確な不均衡があります。
C2 noun /ˈdaɪətraɪb/

diatribe

激しい非難
Meaning
A forceful and bitter verbal attack against someone or something.
Example
The politician launched a diatribe against his opponents.
政治家は自分の対戦相手に対して激しい非難を始めた。
C2 adjective /ˌdɛbəˈnɛr/

debonair

魅力的
Meaning
confident, stylish, and charming, typically referring to a man
Example
He looked debonair in his tuxedo at the gala.
彼はガラでタキシードを着て魅力的に見えました。
C2 noun /ˌdɪfəˈrɛnʃə/

differentia

区別する特徴
Meaning
A distinguishing characteristic that sets one thing apart from another.
Example
The differentia of humans is their ability to reason abstractly.
人間の区別する特徴は抽象的に考える能力です。
C2 verb /dɪsˈpɔːrt/

disport

楽しむ
Meaning
To amuse oneself in a lively or playful way.
Example
The children disported themselves in the garden.
子供たちは庭で楽しんでいました。
C2 adjective /ˈdɪlətɔːri/

dilatory

遅延の
Meaning
Tending to cause delay; slow to act.
Example
The committee was criticized for its dilatory response to the crisis.
委員会は危機に対するその遅延反応で批判されました。
C2 noun /dɪˈstɪlər/

distiller

蒸留業者
Meaning
A person or company that makes alcoholic drinks or purified liquids by distillation.
Example
The distiller introduced a new brand of whiskey last year.
蒸留業者は昨年、新しいウイスキーブランドを紹介しました。
C2 noun dɪsˈbɜːs.mənt

disbursement

支払い
Meaning
The payment of money from a fund.
Example
The company's disbursement of salaries was delayed.
会社の給与の支払いが遅れました。
C2 verb /djuːp/

dupe

だます
Meaning
To deceive or trick someone into believing or doing something.
Example
He was duped into buying a fake watch.
彼は偽物の時計を買うようにだまされました。
C2 adjective /ˈdɔːnt.ləs/

dauntless

無敵の、勇敢な、決然とした
Meaning
Showing fearlessness and determination; brave and resolute.
Example
The dauntless soldier fought against all odds.
無敵の兵士はすべての困難に立ち向かった。
C2 adjective /dæŋk/

dank

湿っていて寒い
Meaning
unpleasantly damp and cold
Example
The basement was dark and dank, filled with a musty smell.
地下室は暗くて湿っていて、悪臭が充満していました。
C2 verb /deɪn/

deign

自分の尊厳を損ねて何かをする
Meaning
to do something considered beneath one's dignity
Example
The king did not deign to reply to the commoner.
王は平民に返答することをしなかった。
C2 adjective /djuːˈplɪsɪtəs/

duplicitous

裏表のある
Meaning
Deceitful; deliberately deceptive or dishonest.
Example
The politician was criticized for his duplicitous statements.
その政治家は裏表のある発言で批判された。
C2 noun /ˌdɪskənˈtɪnjʊəns/

discontinuance

中止
Meaning
the act of stopping something, especially permanently
Example
The discontinuance of the service disappointed many customers.
サービスの中止は多くの顧客を失望させました。
C2 noun /ˌdɛkəˈsɪləbəl/

decasyllable

十音節詩行
Meaning
A line of verse with ten syllables.
Example
The poet often wrote in decasyllable form.
詩人はしばしば十音節詩行で書いていた。
C2 adjective /ˈdʌktaɪl/

ductile

延性
Meaning
capable of being stretched into a thin wire without breaking; easily influenced
Example
Gold is a very ductile metal.
金は非常に延性のある金属です。
C2 noun /djuːˈɛnə/

duenna

ガバーナント
Meaning
an older woman acting as a governess or chaperone, especially in Spanish families
Example
The young lady was accompanied by a duenna during the festival.
若い女性は祭りの間、デュエナに付き添われていました。
C2 verb /dɪˈræsɪˌneɪt/

deracinate

根こそぎ引き抜く
Meaning
To uproot something completely; to displace people from their native environment or culture.
Example
The conflict deracinated many families from their homeland.
その紛争は多くの家族を故郷から追い出しました。
C2 verb /dɪˈdʒɛkt/

deject

落胆させる
Meaning
to make someone feel sad, depressed, or dispirited
Example
The news of his failure seemed to deject him deeply.
彼の失敗のニュースは彼を深く落胆させたようだ。
C2 verb /dɪˈpreɪv/

deprave

堕落させる
Meaning
to corrupt morally; to make someone immoral or wicked
Example
The novel was criticized for attempting to deprave the minds of young readers.
その小説は若い読者の心を堕落させようとしたため批判された。
C2 verb /dɪˈnjuːd/

denude

裸にする
Meaning
to strip something of its covering, possessions, or assets
Example
The forest was denuded of trees by illegal logging.
違法な伐採によって森は木々を裸にされた。
C2 noun /dɪˌlɪniˈeɪʃən/

delineation

delineation
Meaning
the precise description, drawing, or outlining of something
Example
The artist’s delineation of the landscape was remarkably accurate.
アーティストの風景のデリニエイションは驚くほど正確でした。
C2 verb /dɪsˈbɜːrs/

disburse

分配する
Meaning
to pay out money, especially from a fund
Example
The organization will disburse the funds to the affected families.
その団体は影響を受けた家族に資金を分配します。
C2 noun /draɪ ˈmæŋgoʊ ˈpaʊdər/

Dry Mango Powder

アムチュール
Meaning
a tangy powder made from dried raw mangoes, used as a spice in Indian cuisine
Example
The chef sprinkled dry mango powder over the chaat for extra tanginess.
シェフはチャートに酸味を加えるためにドライマンゴーパウダーを振りかけました。
C2 noun /ˈdɛkəˌliːtər/

decaliter

10リットル
Meaning
A metric unit of capacity equal to ten liters.
Example
The container could hold up to one decaliter of water.
その容器は最大で1デカリットルの水を収納できます。
C2 noun /ˈdɪfθɒŋ/

diphthong

二重母音
Meaning
A complex vowel sound that begins with one vowel and glides into another within the same syllable.
Example
The word 'coin' contains a diphthong.
'コイン'という単語には二重母音が含まれています。
C2 noun /ˌdɛd ˈhiːt/

dead-heat

引き分け
Meaning
a race or contest in which two or more competitors finish exactly equal
Example
The race ended in a dead-heat between the two runners.
レースは二人のランナーの間で引き分けで終わった。
C2 adjective /ˈdɛprɪkətɔːri/

deprecatory

軽蔑的な
Meaning
expressing disapproval or belittling
Example
He gave a deprecatory remark about their performance.
彼は彼らのパフォーマンスについて軽蔑的なコメントをしました。
C2 noun /ˈdɛkəˌlɔːɡ/

decalogue

Meaning
The Ten Commandments in the Bible; a set of fundamental rules or principles.
Example
The priest gave a sermon on the importance of the Decalogue.
C2 noun /ˈdræɡˌnɛt/

dragnet

広域捜査
Meaning
A systematic search or investigation, often by police to catch criminals.
Example
The police launched a dragnet to capture the fugitives.
警察は逃亡者を捕まえるために広域捜査を開始した。
C2 verb /dɪˈkænt/

decant

デキャンタ
Meaning
To pour liquid gently from one container into another, especially without disturbing the sediment.
Example
She carefully decanted the wine into a clean glass.
彼女は慎重にワインをきれいなグラスに注いだ。
C2 adjective /droʊl/

droll

ユニーク
Meaning
curious or unusual in a way that provokes dry amusement
Example
He had a droll sense of humor that made everyone laugh.
彼はみんなを笑わせるユニークなユーモアのセンスを持っていた。
C2 adjective /dɪsˈkʌmfɪtɪŋ/

discomfiting

不快な
Meaning
Causing unease, embarrassment, or discomfort.
Example
His discomfiting questions made everyone shift uncomfortably in their seats.
彼の不快な質問は、皆が座席で不安そうに動かせるようにさせた。
C2 noun /dɪˌsɪdəˈreɪtəm/

desideratum

必要な物
Meaning
something that is desired or considered necessary
Example
For many students, financial aid is a desideratum.
多くの学生にとって、経済援助は必要な物です。
C2 noun /draɪd roʊz ˈpɛtəlz/

Dried Rose Petals

乾燥ローズの花びら
Meaning
dehydrated petals from roses used for culinary and aromatic purposes
Example
The dessert was garnished with dried rose petals.
デザートは乾燥ローズの花びらで飾られていました。
C2 noun /ˈdoʊneɪtər/

donator

寄付者
Meaning
A person who gives something, especially money or goods, as a donation.
Example
The donator wished to remain anonymous after contributing a large sum.
寄付者は大きな金額を寄付した後、匿名でいることを希望しました。
C2 noun /dɪˈkæmɪtər/

decameter

デカメートル
Meaning
A metric unit of length equal to ten meters.
Example
The field was measured in decameters for accuracy.
そのフィールドは正確さのためにデカメートルで測定されました。
C2 noun /ˈdɪti/

ditty

短い歌
Meaning
a short, simple song or poem
Example
She sang a cheerful little ditty while cooking.
彼女は料理をしながら陽気な小さな歌を歌っていた。
C2 noun /dɪˈsɛmbələr/

dissembler

偽善者
Meaning
a person who conceals their real feelings or intentions; a hypocrite or pretender
Example
The politician was accused of being a dissembler who never revealed his true plans.
その政治家は、自分の本当の計画を決して明かさなかった偽善者だと非難された。
C2 noun /ˈdɪfɪdəns/

diffidence

自信の欠如
Meaning
Lack of self-confidence; shyness or modesty.
Example
Her diffidence made it hard for her to speak in public.
彼女の自信の欠如は、公衆の前で話すのを難しくした。
C2 noun /draɪ ɡuːs ˈbɛri/

Dry goose berry

乾燥アムラ
Meaning
dehydrated amla fruit, rich in vitamin C and used for medicinal and culinary purposes
Example
Dry goose berry powder is excellent for hair growth.
乾燥アムラの粉末は、髪の成長に優れています。
C2 noun /ˌdɪsɪˈpeɪʃən/

dissipation

浪費
Meaning
the process of disappearing or wasting; excessive indulgence in pleasure
Example
The dissipation of his fortune left him in poverty.
彼の財産の浪費は彼を貧困に追いやった。
C2 noun /ˈdɛnɪzən/

denizen

住民
Meaning
an inhabitant or resident of a particular place
Example
The forest is home to many nocturnal denizens.
その森は多くの夜行性の住民の家です。
C2 verb /dɪsˈbɜːrdən/

disburden

負担を軽減する
Meaning
to relieve someone of a burden or load
Example
She disburdened herself of worries by sharing them with her friend.
彼女は心配を友達と共有することで自分を負担から解放した。
C2 noun /dɪsˈkwaɪɪtjuːd/

disquietude

Meaning
A state of uneasiness, anxiety, or restlessness.
Example
His constant pacing showed his inner disquietude.
C2 noun /ˌdɪskwɪˈzɪʃən/

disquisition

論文
Meaning
A long or elaborate discussion or written essay on a particular subject.
Example
The professor gave a lengthy disquisition on ancient philosophy.
教授は古代哲学についての長い論文を発表しました。
C2 adjective /ˈdɪsəluːt/

dissolute

放蕩
Meaning
lacking moral restraint; indulging excessively in sensual pleasures
Example
He led a dissolute life filled with parties and gambling.
彼はパーティーとギャンブルで満ちた放蕩の生活を送った。
C2 adjective /ˈdʌlsɪt/

dulcet

甘美
Meaning
sweet and soothing (often used ironically)
Example
She was enchanted by his dulcet voice.
彼女は彼の甘美な声に魅了されていた。
C2 noun /ˌdɪsəˈvaʊəl/

disavowal

拒否
Meaning
the denial of any responsibility, connection, or support
Example
The politician issued a firm disavowal of the controversial remarks.
その政治家は物議を醸す発言に対して強い拒否を表明した。
C2 noun /ˈdəʊ.lər/

dolor

痛み
Meaning
A state of great sorrow or distress.
Example
The nation was in deep dolor after the tragedy.
国は悲劇の後、深い痛みに沈んでいた。
C2 adjective /dɪsˈpɛptɪk/

dyspeptic

消化不良, イライラした
Meaning
Relating to indigestion or having a gloomy or irritable disposition.
Example
After the heavy meal, he felt dyspeptic and uncomfortable.
重い食事の後、彼は消化不良で不快に感じました。
C2 noun /djuːˈplɪsɪti/

duplicity

二重性
Meaning
Deceitfulness or double-dealing; dishonesty.
Example
Her duplicity was revealed during the investigation.
調査中に彼女の二重性が明らかになった。
C2 noun /dəˈɡerəˌtaɪp/

daguerreotype

古い写真
Meaning
An early type of photograph produced on a silver or silver-covered copper plate.
Example
The museum displayed a rare daguerreotype of Abraham Lincoln.
博物館にはアブラハム・リンカーンの珍しいダゲレオタイプが展示されていました。
C2 verb /dɪˈskraɪ/

descry

遠くで見る
Meaning
to catch sight of something, especially something distant or obscure
Example
From the hilltop, they descried a small village in the distance.
丘の頂上から、彼らは遠くの小さな村を見た。
C2 adjective /dɪˈkɔːrəs/

decourous

得体な
Meaning
characterized by propriety, good taste, and proper manners
Example
She maintained a decourous silence during the ceremony.
彼女は式典中に得体な沈黙を守った。
C2 noun /ˈdiːɪst/

deist

デイスト
Meaning
a person who believes in the existence of a supreme being but rejects organized religion
Example
The philosopher identified himself as a deist.
その哲学者は自分をデイストとして認識した。
C2 verb /dɪsˈkʌmfɪt/

discomfit

困惑させる
Meaning
to make someone feel uneasy, embarrassed, or confused
Example
The interviewer’s tough questions discomfited the candidate.
インタビュアーの厳しい質問が候補者を困惑させた。
C2 noun /dɪˈspɔɪlər/

despoiler

略奪者
Meaning
A person who robs, plunders, or violently takes things from others.
Example
The despoilers left the city in ruins.
略奪者たちは街を廃墟にした。
C2 noun /ˈdɒldrəmz/

doldrums

Meaning
A state of inactivity, stagnation, or low spirits; also a region near the equator with calm winds.
Example
After the project failed, the team was stuck in the doldrums for months.
C2 noun /dɪˈdʒɛnərəsi/

degeneracy

退化
Meaning
The state of decline or deterioration, often in moral, cultural, or physical qualities.
Example
The novel portrays the moral degeneracy of a corrupt society.
その小説は腐敗した社会の道徳的退化を描いています。
C2 noun /ˌdiːlɛkˈteɪʃən/

delectation

喜び
Meaning
great pleasure or delight
Example
She read the story aloud for the delectation of her friends.
彼女は友達の喜びのために物語を大声で読みました。
C2 noun /dɪˈsweɪʒən/

dissuasion

説得しないこと
Meaning
The act of persuading someone not to take a course of action.
Example
Her dissuasion prevented him from making a bad investment.
彼女の説得しないことは、彼が悪い投資をしないようにしました。
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。
C2 noun /dɪˈtraɪtəs/

detritus

デトリタス
Meaning
Waste or debris of any kind; fragments left from destruction or decay.
Example
The riverbank was covered with detritus after the flood.
洪水後、川岸はデトリタスで覆われていました。
C2 noun /dɪˈprævɪti/

depravity

堕落
Meaning
moral corruption; wickedness
Example
The film portrays the moral depravity of a corrupt society.
その映画は腐敗した社会の道徳的堕落を描いています。
C2 noun /ˈdeɪ.ɪs/

Dais

演壇
Meaning
a raised platform, typically at one end of a room or hall, for speakers or honored guests
Example
The principal stood on the dais to address the entire school assembly.
校長は演壇に立ち、全校集会に話しかけました。
C2 noun /dɪˌlæpɪˈdeɪʃən/

dilapidation

荒廃
Meaning
The state of disrepair or ruin as a result of neglect.
Example
The old temple was in a state of dilapidation.
その古い寺院は廃墟の状態にありました。
C2 adjective /dɪˈspjuːtəbl/

Disputable

議論の余地がある; 疑わしい
Meaning
open to debate or argument; questionable
Example
The facts in the case are disputable and need further investigation.
その事件の事実は議論の余地があり、さらなる調査が必要です。
C2 adjective /ˌdɪspjuːˈteɪʃəs/

disputatious

議論好きな
Meaning
fond of or given to argument and debate
Example
His disputatious nature often led to heated conversations.
彼の議論好きな性格は、しばしば熱い議論を引き起こす。
C2 noun /dɪˈmʌrɪdʒ/

demurrage

デマレッジ
Meaning
a charge payable to the owner of a ship or vehicle for not loading or unloading on time
Example
The company had to pay demurrage for delaying the unloading of goods.
会社は荷物の荷降ろしの遅れでデマレッジを支払わなければならなかった。
C2 verb /dɪˈspɒnd/

despond

落ち込む
Meaning
to lose confidence or hope; to become dejected
Example
After repeated failures, he began to despond.
繰り返しの失敗の後、彼は落ち込むようになった。
C2 noun /ˌdaɪələˈtɪʃən/

dialectician

弁証法の専門家
Meaning
A person skilled in dialectic or logical argument.
Example
Socrates is often considered the greatest dialectician in history.
ソクラテスはしばしば歴史上最も偉大な弁証法の専門家と見なされます。
C2 adverb /ˈdɑːrklɪŋ/

darkling

暗闇の中で
Meaning
In the dark or growing dark; dimly.
Example
The forest creatures moved darkling through the night.
森の生き物は夜に暗闇の中で動いていた。
C2 noun /dɪˈkæmərən/

decameron

デカメロン (ボッカッチョの物語集)
Meaning
A collection of 100 tales written by Giovanni Boccaccio in the 14th century, told by a group of people over ten days.
Example
The Decameron is considered a masterpiece of classical Italian literature.
デカメロンはイタリア古典文学の傑作とされています。
C2 adjective /dɪsˈkɜrsɪv/

discursive

脱線的
Meaning
Tending to digress or move from topic to topic; lengthy and rambling.
Example
His discursive style made the lecture hard to follow.
彼の脱線的なスタイルは講義を追うのが難しかった。
C2 verb /dɪˈkleɪm/

declaim

Meaning
to speak aloud in a formal, passionate, or theatrical way
Example
The actor declaimed his lines with great intensity.
C2 noun /ˈdaɪɡræf/

digraph

二重音字
Meaning
A pair of letters representing a single sound, such as 'sh' in 'ship'.
Example
In the word 'phone', the letters 'ph' form a digraph.
'電話'という言葉では、'ph'の文字が二重音字を形成します。
C2 adjective /dɪˈmoʊniˌæk/

demoniac

悪魔的な
Meaning
possessed, produced, or influenced by a demon; frenzied or violent
Example
The soldiers fought with demoniac fury.
兵士たちは悪魔的な怒りで戦った。
C2 adjective /ˈdoʊlfəl/

Doleful

悲しげな; 哀れな;
Meaning
sorrowful; mournful; expressing grief or sadness
Example
She gave him a doleful look when he left.
彼が去ったとき、彼女は悲しげな表情を彼に向けた。
C2 noun /ˈdoʊtɪdʒ/

dotage

老年
Meaning
The period of old age, especially when one is weak or senile.
Example
He spent his dotage reminiscing about his youth.
彼は晩年を若い頃を思い出して過ごしました。
C2 adjective /ˈdɒdərɪŋ/

doddering

震えている / 弱い
Meaning
Weak, shaky, or unsteady, especially due to old age.
Example
The doddering professor struggled to climb the stairs.
ドダリング教授は階段を登るのに苦労していました。
C2 noun /ˌdɛkləˈmeɪʃən/

declamation

朗読
Meaning
a formal speech delivered with rhetorical or dramatic effect
Example
Her declamation captivated the audience at the competition.
彼女の朗読は競技会で観客を魅了しました。
C2 noun /ˈduːti/

Dhuti

ドゥティ
Meaning
a traditional Indian garment for men consisting of a piece of unstitched cloth worn around the waist and legs
Example
The elderly man wore a white dhuti during the religious ceremony.
年配の男性は宗教的な儀式で白いドゥティを着ていた。
C2 noun /ˈdɛftnəs/

deftness

巧妙さ
Meaning
Skillfulness and quickness in action or thought.
Example
Her deftness with words impressed the audience.
彼女の言葉の巧妙さは観客を感動させた。
C2 noun /ˈdæstərd/

dastard

卑怯者
Meaning
a cowardly or dishonorable person
Example
Only a dastard would betray his closest friend.
裏切るのは卑怯者だけだ。
C2 verb /ˌdɛlɪˈkwɛs/

deliquesce

空気中の水分を吸収して液体になる
Meaning
to become liquid by absorbing moisture from the air
Example
The salt began to deliquesce after being left in the humid room.
塩は湿度の高い部屋に置かれた後、液体に変わり始めました。
C2 noun /ˌdaɪvəˈɡeɪʃən/

divagation

脱線
Meaning
digression; wandering from a path or subject
Example
His lecture was full of divagation, making it hard to follow the main point.
彼の講義は脱線だらけで、主なポイントを追うのが難しかった。
C2 adjective /ˈdaʊ.di/

dowdy

時代遅れ / ださい
Meaning
unfashionable, dull, or shabby in appearance
Example
She wore a dowdy dress to the party.
彼女はパーティーに時代遅れのドレスを着ていた。
C2 adjective /ˌdɛlɪˈkwɛsənt/

deliquescent

湿気を吸収して液体に変わる
Meaning
tending to become liquid by absorbing moisture from the air
Example
Sugar is not deliquescent, but salt can be.
砂糖はデリクエセントではないが、塩はそうである可能性がある。
C2 noun /ˈdeɪ.mæn/

day-man

日雇い労働者
Meaning
a worker employed by the day; a day laborer
Example
The farmer hired a day-man to help with the harvest.
農家は収穫を手伝うために日雇い労働者を雇いました。
C2 verb /ˈdiːɪfaɪ/

deify

神格化する
Meaning
to treat or worship someone or something as a god
Example
Some fans deify their favorite celebrities.
一部のファンはお気に入りの有名人を神のように崇拝します。
C2 adjective /dɪˈstɛnsəbl̩/

distensible

伸縮可能な
Meaning
Capable of being stretched or expanded.
Example
The stomach is a distensible organ that can expand after eating.
胃は食後に膨らむことができる伸縮可能な器官です。
C2 noun /ˌdɪləˈtænt/

dilettante

愛好家
Meaning
A person who takes up an art, activity, or subject merely for amusement, especially in a superficial way.
Example
He was dismissed as a dilettante in the art world because he lacked formal training.
彼は芸術界で愛好家として退けられました、なぜなら正式な訓練が不足していたからです。
C2 verb /dɪˈbɑːrk/

debark

下船する
Meaning
to disembark or get off a ship, aircraft, or vehicle
Example
The passengers debarked as soon as the ship docked.
乗客は船がドックに着いたときに下船しました。
C2 verb /diːˈpɒpjʊˌleɪt/

depopulate

人口減少
Meaning
To reduce the number of people living in a place.
Example
The war threatened to depopulate the once-thriving town.
戦争はかつて繁栄していた町を人口減少させる脅威を与えた。
C2 noun /ˈdɒɡərəl/

doggerel

低俗な詩
Meaning
Comic or irregular verse, often poorly constructed and lacking in artistic quality.
Example
The poet’s work was dismissed as mere doggerel by the critics.
詩人の作品は批評家によって単なる低俗な詩として却下された。
C2 noun /ˈdɛkəˌɡɒn/

decagon

十角形
Meaning
A polygon with ten sides and ten angles.
Example
The geometry teacher drew a perfect decagon on the board.
数学の先生は黒板に完璧な十角形を描きました。
C2 adjective /ˈdɔːrsəl/

dorsal

背鰭
Meaning
Relating to the back or upper side of an animal or body part.
Example
Sharks have a prominent dorsal fin.
サメは目立つ背鰭を持っています。
C2 prefix /dɪs-/

dys-

異常、悪い、困難、または欠陥を意味する接頭辞
Meaning
A prefix meaning abnormal, bad, difficult, or impaired.
Example
Words like 'dysfunction' and 'dyslexia' use the prefix dys- to indicate difficulty or impairment.
'ディスファンクション'や'ディスレクシア'のような言葉は、困難や障害を示すためにディス-という接頭辞を使用します。
C2 noun /ˈdɛkəˌpɒd/

decapod

十脚目
Meaning
An arthropod with ten limbs, such as crabs, lobsters, and shrimps.
Example
The lobster is a well-known decapod.
ロブスターは有名な十脚目です。
C2 adjective /ˈdjuːtiəs/

duteous

忠実な
Meaning
dutiful; obedient and respectful
Example
The duteous child always followed her parents’ instructions.
その忠実な子供は常に両親の指示に従っていました。
C2 adjective /ˌdɪskəmˈbɑːbjuleɪtɪd/

discombobulated

混乱した
Meaning
confused and disoriented; feeling unsettled
Example
She looked discombobulated after hearing the unexpected news.
予期しないニュースを聞いた後、彼女は混乱しているように見えた。
C2 adjective /ˌdaɪəˈtɒmɪk/

diatomic

二原子
Meaning
Consisting of two atoms.
Example
Oxygen is a diatomic molecule.
酸素は二原子分子です。
C2 noun /dɪˈpoʊnənt/

deponent

証人
Meaning
A person who gives testimony under oath, especially in a written deposition.
Example
The deponent confirmed the accuracy of the statement during the trial.
証人は裁判中に証言の正確性を確認しました。
C2 noun /ˌdɛrɪˈlɪkʃən/

dereliction

職務怠慢
Meaning
the state of being abandoned; neglect of duty
Example
The officer was charged with dereliction of duty.
その役人は職務怠慢で起訴された。