demesne
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C2 noun /dɪˈmeɪn/

demesne

邸宅に付属する土地
Meaning
Land attached to a manor and retained for the owner's use.
Example
The castle was surrounded by its vast demesne.
その城は広大な邸宅に付属する土地に囲まれていました。
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。
C1 adjective /dɪˈfaɪənt/

Defiant

反抗的な; 逆らう
Meaning
boldly resistant or challenging; disobedient
Example
The defiant student refused to follow the rules.
その反抗的な学生はルールに従うことを拒否しました。
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。
A1 verb /duː/

do

する
Meaning
to perform an action; to carry out
Example
I do my homework every evening.
私は毎晩宿題をします。
B2 noun /ˈdaʊn.fɔːl/

Downfall

没落; 失敗; 崩壊
Meaning
a loss of power, prosperity, or status; the cause of such a loss
Example
His arrogance and pride led to his eventual downfall in business.
彼の傲慢と誇りは、ビジネスにおける彼の最終的な失墜を招いた。
C1 adjective /dɪˈmɒnstrəbl/

demonstrable

証明可能
Meaning
clearly able to be shown or proven
Example
There was demonstrable evidence that he was innocent.
彼が無罪であることを示す証明可能な証拠がありました。
C1 noun ˌdep.əˈzɪʃ.ən

deposition

堆積、何かを堆積させるプロセス
Meaning
The action of depositing something; the laying down of matter by a natural process.
Example
River deposition leads to the formation of new landmasses.
河川の堆積は新しい大陸の形成をもたらします。
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。
B2 verb /dʌmp/

dump

何かを無駄に捨てるまたは放置する
Meaning
to drop or dispose of something carelessly; to end a relationship suddenly
Example
He dumped all the trash into the bin.
彼はゴミをすべてゴミ箱に捨てた。
B1 verb /dɪˈpɛndɪŋ/

depending

依存する
Meaning
Being contingent on or influenced by something.
Example
The success of the plan is depending on the team's effort.
計画の成功はチームの努力に依存しています。
C1 verb /ˈdæŋɡəl/

dangle

ぶら下がる
Meaning
to hang loosely or swing freely
Example
The keys dangled from his belt.
鍵がベルトからぶら下がっていました。
C1 noun /ˈdek.ə.dəns/

decadence

堕落
Meaning
Moral or cultural decline characterized by excessive indulgence in pleasure or luxury.
Example
The novel describes the decadence of the wealthy elite.
その小説は裕福なエリートの堕落を描いています。
B2 verb dɪˈtɪrɪəˌreɪts

deteriorates

悪化する
Meaning
To become progressively worse; to decline in quality, condition, or strength.
Example
The quality of air deteriorates due to pollution.
汚染によって大気の質が悪化する。
B2 adjective /dɪˈstɪŋkt/

Distinct

独特の; ユニークな; 明確な; 認識できる
Meaning
separate and different; clear and recognizable; unique
Example
Each painting has its own distinct style and character.
各々の絵画には、それぞれ独自のスタイルと特徴があります。
B2 verb /dɪˈfɜːr/

defer

延期する
Meaning
To postpone or delay; to yield to someone else's judgment or opinion.
Example
The meeting was deferred until next week.
会議は来週まで延期されました。
B2 noun /dɪˈnaɪ.əl/

Denial

否認
Meaning
the action of declaring something to be untrue; refusal to acknowledge something
Example
His denial of involvement in the scandal was met with skepticism.
スキャンダルへの関与を否認した彼の姿勢は、疑念を持って受け止められました。
C2 noun /ˌdɛspəˈrɑːdoʊ/

desperado

Meaning
A bold, reckless, or dangerous person, often a criminal.
Example
The sheriff was determined to capture the desperado who terrorized the town.
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 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。
C1 adjective /ˌdaɪəˈbɒlɪkəl/

diabolical

悪魔的
Meaning
Wicked, cruel, or outrageously bad; resembling the devil.
Example
The dictator’s diabolical rule brought misery to the nation.
独裁者の悪魔的な支配は国に苦しみをもたらした。
B1 verb /ˌdɪsəˈpɔɪnt/

disappoint

失望させる
Meaning
to fail to fulfill the hopes or expectations of someone; to make someone feel sad or displeased
Example
I hope I won't disappoint you with my performance.
私はパフォーマンスであなたを失望させたくない。
C2 adjective /ˈdɪfɪdənt/

diffident

Meaning
Shy or lacking confidence in one's own abilities.
Example
He was too diffident to ask a question in class.
B2 noun /dɪˌtɜː.mɪˈneɪ.ʃən/

determination

決意
Meaning
Firmness of purpose; the quality of being determined; resolve.
Example
His determination to succeed was unwavering.
成功するための彼の決意は揺るぎなかった。
B1 verb /dɪˈvɛləpɪŋ/

developing

開発
Meaning
the process of growing, improving, or becoming more advanced
Example
She is developing new skills in programming.
彼女はプログラミングで新しいスキルを開発しています。
C2 verb /ˈdɛpɪleɪt/

depilate

脱毛する
Meaning
to remove hair from the skin, especially by mechanical or chemical means
Example
She decided to depilate her legs before the event.
彼女はイベントの前に足を脱毛することに決めました。
C1 verb /dɪˈkraɪ/

decry

非難する
Meaning
to publicly criticize or express strong disapproval of something
Example
Many activists decry the destruction of the rainforest.
多くの活動家が熱帯雨林の破壊を非難しています。
B2 adverb /ˈdʌbli/

doubly

二重に
Meaning
in a twofold manner; to twice the degree
Example
She felt doubly fortunate after winning the prize and getting a promotion.
彼女は賞を受賞し、昇進した後、二重に幸運だと感じました。
C1 verb /ˌdɪsəˈsɛmbəl/

disassemble

分解する
Meaning
To take apart something into its separate pieces.
Example
He had to disassemble the computer to repair it.
彼は修理のためにコンピュータを分解しなければならなかった。
C1 noun /ˈdeɪˌbreɪk/

daybreak

夜明け
Meaning
The time in the morning when daylight first appears; dawn.
Example
They set out on their journey at daybreak.
彼らは夜明けに旅を始めました。
B2 adjective /dɪˈstɪŋɡwɪʃt/

Distinguished

優れた; 名誉のある; 有名な; 尊厳のある外見または態度
Meaning
notable; honored; famous; having a dignified appearance or manner
Example
He is a distinguished professor at the university.
彼は大学の優れた教授です。
C2 verb /ˈdæli/

dally

無駄にする
Meaning
To act or move slowly; to waste time; also to engage in a casual romantic relationship.
Example
He dallied in the garden instead of starting his work.
彼は仕事を始める代わりに庭で時間を無駄にしていました。
A2 noun /ˈdɪs.təns/

Distance

距離
Meaning
the length of space between two points; remoteness in place, time, or relationship
Example
The distance between the two cities is approximately three hundred kilometers.
2つの都市間の距離は約300キロメートルです。
C1 noun ˈdɪk.ʃən

diction

発音と単語の選択
Meaning
The style of pronunciation and word choice in speaking or writing.
Example
A strong diction enhances communication skills.
強いディクションはコミュニケーション能力を向上させます。
C2 adjective /ˈdɛsɪkeɪtɪd/

desiccated

乾燥した
Meaning
completely dried, having had all moisture removed
Example
The museum displayed desiccated specimens of plants.
博物館は乾燥した植物標本を展示した。
C2 noun /ˈdɔːrmər/

dormer

ドーマー窓
Meaning
A window that projects vertically from a sloping roof.
Example
The old house had a dormer overlooking the garden.
その古い家には庭を見下ろすドーマー窓がありました。
C1 adjective /ˈdestatəʊt/

Destitute

困窮した; 貧しい; 財産もお金もない
Meaning
extremely poor; without money or possessions
Example
Many families became destitute after the economic collapse.
経済崩壊後、多くの家族は困窮しました。
B2 noun daɪˈmen.ʃən

dimension

次元
Meaning
An aspect or feature of a situation, problem, or thing; a measurable extent.
Example
Renewable projects add a new dimension to urban planning.
再生可能エネルギープロジェクトは都市計画に新しい次元を加えます。
C2 adjective /ˌdaɪəˈlɛktɪkəl/

dialectical

弁証法的
Meaning
Relating to the logical discussion of ideas and opinions.
Example
She took a dialectical approach to solve the complex issue.
彼女は複雑な問題を解決するために弁証法的なアプローチを取りました。
B2 noun /ˌdɪsɪnˈfɛktənt/

disinfectant

消毒剤
Meaning
a chemical substance used to kill harmful microorganisms on surfaces
Example
The cleaner sprayed disinfectant on the table.
清掃員はテーブルに消毒剤を噴霧しました。
C2 verb /ˌdɪskəmˈbɑːbjuleɪt/

discombobulate

混乱させる
Meaning
to confuse or disconcert; to upset the normal order
Example
The sudden question seemed to discombobulate him.
突然の質問が彼を混乱させたようだ。
C1 verb /dʌb/

dub

吹き替え
Meaning
to give a name or label to something; to add a soundtrack to a film or recording
Example
The movie was dubbed into several languages for international release.
その映画は国際公開のためにいくつかの言語に吹き替えられました。
B2 noun ˈdevəsteɪtɪŋ ˈkɒnsɪkwənsɪz

devastating consequences

壊滅的な結果
Meaning
Extremely harmful or destructive results or effects
Example
Air pollution has devastating consequences for health.
大気汚染は健康に壊滅的な結果をもたらす。
B2 verb /ˈdɛzɪɡneɪt/

designate

指名する
Meaning
to officially assign, appoint, or indicate something or someone
Example
The committee will designate a new chairperson next week.
委員会は来週、新しい会長を指名する予定です。
A1 noun /deɪz/

days

日々
Meaning
plural of day; refers to multiple 24-hour periods of time
Example
The project will take at least five days to finish.
このプロジェクトは少なくとも5日かかります。
C1 verb /ˈdræm.ə.taɪz/

dramatize

ドラマ化する
Meaning
to present a story in a dramatic way, or to exaggerate something
Example
The novel was dramatized into a popular TV series.
その小説は人気のテレビシリーズにドラマタイズされました。
C1 noun /ˌdiː.kɒmpəˈzɪʃən/

decomposition

分解
Meaning
the process of decaying or breaking down into simpler parts
Example
The decomposition of leaves enriches the soil.
葉の分解は土壌を豊かにします。
C1 adjective /dɪsˈhɑːrtənd/

Disheartened

落胆した
Meaning
discouraged; feeling dejected; losing hope or confidence
Example
She felt disheartened after failing the exam twice.
彼女は試験に2回失敗した後、落胆していました。
B2 adverb /ˈdɪmli/

dimly

薄暗く
Meaning
in a faint or unclear way; with little light
Example
The room was dimly lit by a single candle.
部屋は一本のろうそくで薄暗く照らされていた。
B1 noun /ˌdɛfɪˈnɪʃən/

definition

定義
Meaning
a statement that explains the meaning of a word or concept
Example
The dictionary gives a clear definition of the word.
辞書はその言葉の明確な定義を示します。
C1 verb /dɪˈzɪst/

desist

Meaning
to stop doing something, especially an action considered wrong or undesirable
Example
The judge ordered the company to desist from unfair practices.
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。
C1 adjective /dɪˈmɪnjətɪv/

diminutive

非常に小さい
Meaning
extremely or unusually small
Example
Despite his diminutive size, he was a powerful leader.
その非常に小さい体格にもかかわらず、彼は強力なリーダーだった。
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 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 /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。
A2 noun /ˈdɪfərəns/

difference

違い
Meaning
A point or way in which things are not the same.
Example
There is a big difference between theory and practice.
理論と実践の間に大きな違いがあります。
B2 verb /dɪˈstɪŋɡwɪʃ/

distinguish

区別する
Meaning
to recognize or show the differences between two or more things; to set apart as different
Example
It can be difficult to distinguish between truth and rumor.
真実と噂を区別するのは難しいかもしれません。
C2 noun /ˌdoʊ.məˈstɪs.ə.ti/

domesticity

家庭生活
Meaning
Life at home or devotion to family life.
Example
She enjoys the domesticity of cooking and gardening.
彼女は料理とガーデニングの家庭生活を楽しんでいます。
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。
A2 noun /dɪˈziːz/

disease

病気
Meaning
An illness or medical condition that affects the body or mind.
Example
The doctor is researching a cure for the disease.
医者はその病気の治療法を研究しています。
C1 verb /dɪsˈkwɑːlɪfaɪ/

disqualify

失格する
Meaning
to officially prevent someone from participating or being eligible
Example
The referee decided to disqualify the player for cheating.
審判は不正行為のために選手を失格にすることを決定しました。
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。
C1 adjective ˌdet.rɪˈmen.təl

detrimental

有害な
Meaning
Tending to cause harm; damaging or harmful.
Example
Pollution has detrimental effects on fertility.
汚染は生殖能力に有害な影響を与えます。
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 adjective /dɪˈtɜːrmɪnət/

determinate

確定的
Meaning
having exact and definite limits or form
Example
The contract is for a determinate period of two years.
契約は2年間の確定した期間です。
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。
B1 noun /dɪˈmænd/

Demand

需要；消費者の商品の要求
Meaning
an urgent request; the desire of consumers for goods or services
Example
The demand for organic food has increased significantly in recent years.
オーガニック食品の需要は近年顕著に増加しています。
C1 noun ˌdɪm.ɪˈnjuː.ʃən

diminution

減少
Meaning
A reduction in the size, extent, or importance of something; decrease.
Example
There has been a diminution in air pollution.
大気汚染の減少がありました。
C2 adjective /dɪˈstreɪ/

distrait

ぼんやりした
Meaning
deeply distracted or absent-minded, often due to worry or grief
Example
He looked distrait after hearing the sad news.
悲しい知らせを聞いた後、彼はぼんやりしているように見えた。
C2 noun /dəˈkɔɪt/

Dacoit

盗賊
Meaning
a member of an armed gang of robbers; a bandit, especially in India and Myanmar
Example
The village was terrorized by a gang of dacoits who robbed travelers.
その村は、旅行者を強盗した強盗団によって恐怖に陥れられました。
B2 noun /dɪˈsen.dənt/

Descendant

子孫
Meaning
a person who is descended from a particular ancestor; offspring of a later generation
Example
She discovered that she was a descendant of European royalty through genealogy research.
彼女は系譜研究を通じて、ヨーロッパの王族の子孫であることを発見しました。
A1 adjective /dɑːk/

Dark

暗い
Meaning
having little or no light; of a deep shade approaching black
Example
She prefers dark colors for her winter clothes.
彼女は冬の服に暗い色を好みます。
A2 verb /dɪˈpend/

depend

頼る
Meaning
to rely on someone or something for support
Example
Children depend on their parents for care.
子供たちは親に頼って世話を受けています。
B2 noun /ˈdɛpjʊti/

deputy

代理
Meaning
A person appointed as a substitute with power to act.
Example
The deputy will lead the meeting in the manager’s absence.
代理はマネージャー不在時に会議を主導します。
B2 noun /depθ/

Depth

深さ; 深いまたは深遠な特質
Meaning
the distance from the top or surface to the bottom; the quality of being intense or profound
Example
The depth of the ocean in this area reaches over three thousand meters.
この地域の海の深さは3,000メートルを超えています。
B2 adjective /ˈded.li/

Deadly

致命的な; 死亡の; 危険な
Meaning
causing or able to cause death; extremely dangerous; lethal
Example
The deadly poison killed the plant instantly.
致命的な毒はその植物を瞬時に殺しました。
C1 noun /ˌdɪsəˈluːʃən/

dissolution

解散
Meaning
the act of formally ending or breaking apart something, such as an organization or marriage
Example
The dissolution of the company was announced yesterday.
会社の解散は昨日発表されました。
C1 noun /ˈdaʊri/

dowry

持参金
Meaning
Property or money brought by a bride to her husband at marriage.
Example
The dowry tradition is still followed in some cultures.
いくつかの文化では、持参金の伝統が今でも守られています。
A1 noun /dres/

Dress

ドレス
Meaning
a piece of clothing for women or girls that covers the body and extends down over the legs
Example
She wore a beautiful blue dress to the party.
彼女はパーティーで美しい青いドレスを着ていました。
C1 noun /ˌdɛsɪˈmeɪʃən/

decimation

壊滅
Meaning
The act of destroying or killing a large proportion of something.
Example
The decimation of the city left thousands homeless.
都市の壊滅により、何千人もの人々が家を失った。
C2 noun /dɪˈbɛntʃər/

debenture

社債
Meaning
a type of debt instrument not secured by physical assets or collateral
Example
The company raised capital by issuing debentures to investors.
その会社は投資家に社債を発行して資本を調達した。
C1 noun /ˌdɒmɪˈneɪʃən/

domination

支配
Meaning
the exercise of control or influence over someone or something
Example
The empire sought domination over its neighbors.
帝国は隣国に対する支配を求めていた。
C1 adjective /dɪˈpreɪvd/

depraved

堕落した
Meaning
morally corrupt or wicked
Example
The film depicts the life of a depraved criminal.
その映画は堕落した犯罪者の人生を描いています。
C1 adjective /dɪˈklærətɪv/

declarative

宣言的
Meaning
relating to a statement that declares something; in grammar, a sentence that makes a statement
Example
A declarative sentence simply states a fact or opinion.
宣言的な文は、単に事実や意見を述べるものです。
B2 verb /drɪft/

drift

漂う
Meaning
to move slowly, especially by air or water currents
Example
The boat began to drift away from the shore.
ボートは岸から離れ始めた。
B2 noun/verb /dɪˈvɔːrs/

divorce

離婚
Meaning
the legal ending of a marriage; to officially end a marriage
Example
After years of conflict, they decided to get a divorce.
数年の対立の後、彼らは離婚することを決めました。
B2 noun /dɪsˈɡreɪs/

Disgrace

恥辱; 不名誉; 恥ずかしい
Meaning
loss of reputation or respect as the result of a dishonorable action; a shameful situation
Example
His arrest brought disgrace upon his entire family and reputation.
彼の逮捕は彼の家族全体と評判に恥辱をもたらした。
C1 noun /ˈdɪm.pəl/

Dimple

えくぼ
Meaning
a small depression in the flesh, either one that exists permanently or one that forms when smiling
Example
Her charming dimples appeared whenever she smiled at the children.
彼女の魅力的なえくぼは、子供たちに微笑むたびに現れました。
C2 adjective /ˈdaʊti/

doughty

勇敢な
Meaning
brave, valiant, courageous
Example
The doughty soldier never backed down from a challenge.
勇敢な兵士は挑戦から決して後退しなかった。
A2 noun /dɪˈzaɪnər/

designer

デザイナー
Meaning
a person who plans and creates the form or structure of something
Example
The fashion designer presented her new collection.
ファッションデザイナーは新しいコレクションを発表しました。
B2 noun /dɪˈtɜːrdʒənt/

detergent

洗剤
Meaning
a substance used for cleaning, especially for washing clothes and dishes
Example
She bought a new brand of detergent for laundry.
彼女は洗濯のために新しいブランドの洗剤を買いました。
B2 verb dɪsˈrʌpt

disrupt

破壊する
Meaning
To interrupt or disturb the normal progress or activity of something.
Example
Individual pursuits disrupt social harmony.
個々の追求は社会的調和を破壊します。
A2 noun /dɒl/

doll

人形
Meaning
a small toy resembling a human figure, especially for children
Example
The little girl hugged her favorite doll tightly.
小さな女の子はお気に入りの人形をしっかり抱きしめました。
A2 verb /dɪsˈkʌvər/

discover

発見する
Meaning
to find something for the first time
Example
Scientists discovered a new planet last year.
科学者たちは昨年新しい惑星を発見しました。
B2 noun /dʌv/

Dove

鳩
Meaning
a small, gentle bird with soft cooing sounds, often white and symbolizing peace
Example
The white dove flew peacefully across the blue sky.
白い鳩は青い空を平和に飛んでいた。
B2 verb /dɪˈskrɪmɪˌneɪt/

discriminate

Meaning
To treat someone unfairly based on race, gender, or other differences; or to recognize a distinction.
Example
The law prohibits employers from discriminating against women.
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 /ˈdiːmən/

demon

悪魔
Meaning
an evil spirit or devil
Example
The story was about a demon who haunted the village.
その話は、村を恐怖に陥れたデーモンについてでした。
B2 verb/noun /ˌdɪsrɪˈɡɑːrd/

disregard

軽蔑
Meaning
To ignore something; lack of consideration or respect for something.
Example
He disregarded the warning signs and kept driving.
彼は警告のサインを無視して運転し続けました。
C1 verb, noun /ˌdɪsɪˈluːʒən/

disillusion

幻滅
Meaning
to cause someone to realize that something is not as good as they believed
Example
The scandal disillusioned many voters.
そのスキャンダルは多くの有権者を幻滅させた。
C1 noun /diːˌtɒksɪfɪˈkeɪʃən/

detoxification

デトックス
Meaning
The process of removing toxic substances from a living organism.
Example
Detoxification helps to cleanse the body of harmful substances.
デトックスは体内の有害物質を排除するのに役立ちます。
C1 noun /dɪˈsaɪ.pəl/

Disciple

弟子; 信者
Meaning
a follower and student of a teacher, leader, or philosopher; devoted follower
Example
The famous philosopher had many disciples who spread his teachings worldwide.
その有名な哲学者には多くの弟子がいて、彼の教えを世界中に広めました。
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。
C1 verb /ˌdɪsˈmaʊnt/

dismount

降りる
Meaning
to get off or down from something, especially a horse, bicycle, or motorcycle
Example
The rider dismounted from the horse after a long journey.
長い旅の後、ライダーは馬から降りた。
B2 noun /djuː/

Dew

露
Meaning
tiny drops of water that form on cool surfaces at night when atmospheric water vapour condenses
Example
The morning dew glistened on the grass.
朝露が草の上で輝いていました。
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。
B2 verb /ˈdɪkteɪt/

dictate

口述する
Meaning
to say words aloud for someone to write down; to give orders
Example
The boss dictates letters to his secretary.
ボスは秘書に手紙を口述します。
B1 noun/verb /ˈdɒkjʊmənt/

document

文書
Meaning
Noun: A written, printed, or electronic record that provides information or evidence. Verb: To record information in written or electronic form.
Example
She carefully documented all the expenses of the trip.
彼女は旅行のすべての費用を慎重にドキュメントした。
B2 verb, noun /dɑːrt/

dart

ダート/急に走る
Meaning
to move suddenly and quickly; a small pointed missile thrown at a target
Example
The cat darted across the street to avoid the car.
猫は車を避けるために急いで道路を横切りました。
A2 verb /drɔː/

draw

描く
Meaning
to create pictures or designs with a pencil or pen
Example
She draws beautiful landscapes in her spare time.
彼女は余暇に美しい風景を描きます。
C1 noun /ˈdaɪnəˌmoʊ/

dynamo

電気を発生させる機械; 大きなエネルギーと熱意を持つ人物
Meaning
A machine that generates electricity; a person with great energy and enthusiasm.
Example
She is the real dynamo behind the success of the company.
彼女は会社の成功の背後にある本物のダイナモです。
C1 verb /dɪˈfjuːz/

diffuse

Meaning
to spread over a wide area or among a large number of people
Example
The smell of fresh bread diffused through the entire house.
C1 noun /ˈdɒktrɪn/

doctrine

教義
Meaning
A set of beliefs or principles held and taught by a religious, political, or other group.
Example
The church follows a strict doctrine on moral values.
教会は道徳的価値に関する厳格な教義を遵守しています。
B2 verb /ˌdɪsəˈpruːv/

disapprove

反対する
Meaning
to have a negative opinion about something; to consider something wrong or bad
Example
Many parents disapprove of smoking.
多くの親は喫煙を反対しています。
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。
B2 verb /ˌdɪfəˈrɛnʃieɪt/

differentiate

区別する
Meaning
To recognize or make a distinction between things.
Example
It is important to differentiate between fact and opinion.
事実と意見を区別することは重要です。
B2 verb /dɪˈstrækt/

distract

気を散らす
Meaning
to take someone's attention away from what they are doing or focusing on
Example
The loud noise distracted her during the exam.
大きな音が試験中に彼女をディストラクトした。
C1 verb /dɪˈstɪl/

distill

Meaning
To purify a liquid by heating and cooling; to extract the essential meaning or most important aspects.
Example
The factory distills water to make it safe for drinking.
B2 noun /ˌdɪsəˈɡriːmənt/

disagreement

不一致
Meaning
a failure to agree or a difference in opinion
Example
Their disagreement on the issue caused a delay in the project.
その問題に対する彼らの不一致はプロジェクトの遅延を引き起こしました。
C1 adjective /ˈdwɪndlɪŋ/

dwindling

減少
Meaning
Gradually reducing in number, size, or strength.
Example
The villagers relied on dwindling water supplies.
村人たちは減少していく水の供給に依存していた。