diffuse
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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 ˌdiːˌrɛɡ.jʊˈleɪ.ʃən

deregulation

規制緩和
Meaning
The removal or reduction of government regulations in an economic sector.
Example
Deregulation has increased competition in the telecommunications sector.
規制緩和は通信業界で競争を促進しました。
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。
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。
A1 noun /dɔːr/

Door

ドア
Meaning
a movable barrier used to close an entrance to a building or room
Example
Please close the door when you leave the room.
部屋を出るときはドアを閉めてください。
A1 adjective /dɪr/

dear

親愛なる
Meaning
loved or cherished; sometimes used as a polite form of address
Example
She is very dear to her grandparents.
彼女は祖父母にとって非常に親愛なる存在です。
C1 noun /dɪˈfɔː.mə.ti/

Deformity

変形; 身体的欠陥
Meaning
a distorted or unnatural shape or form; physical malformation
Example
The accident caused a permanent deformity in his left hand.
事故は彼の左手に永続的な変形を引き起こしました。
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。
A2 noun /ˈdʌzən/

dozen

ダース
Meaning
a group of twelve
Example
She bought a dozen eggs from the market.
彼女は市場でダースの卵を買いました。
C1 verb /ˈduːdəl/

doodle

Meaning
To draw or scribble absentmindedly, often while thinking about something else.
Example
She doodled flowers in the corner of her notebook during class.
C2 noun /ˈdɛvɪltrɪ/

deviltry

悪魔的な行為
Meaning
Cruel or malicious behavior; mischief with an evil aspect.
Example
The villain’s deviltry terrified the townsfolk.
悪党の悪魔的な行為は町の人々を恐れさせました。
B1 verb/noun /ˈdiːkriːs/ (noun), /dɪˈkriːs/ (verb)

decrease

Meaning
To become or make something smaller or fewer in number, amount, or degree.
Example
The population of the town has decreased over the years.
B2 noun /doʊ/

dough

生地
Meaning
a mixture of flour, water, and other ingredients used to make bread or pastries
Example
She kneaded the dough for ten minutes before baking.
彼女は生地を10分間こねた後、それを焼きました。
C1 verb /diːˈkoʊd/

decode

Meaning
to convert a coded message into a readable form; to interpret meaning
Example
The software can decode the hidden message within seconds.
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。
B2 noun /dɪˈkeɪ/

Decay

腐敗; 分解; 老化
Meaning
the process of rotting or decomposing; gradual decline or deterioration
Example
The old building showed signs of decay after years of neglect.
その古い建物は長年の無視の後、腐敗の兆しを示していた。
C1 noun /ˌdɜːrməˈtɑːlədʒi/

dermatology

皮膚科学
Meaning
The branch of medicine concerned with the skin and its diseases.
Example
He studied dermatology at medical school.
彼は医学部で皮膚科学を学んだ。
A2 noun /dɪˈzæs.tər/

Disaster

災害
Meaning
a sudden event causing great damage or loss of life; a complete failure
Example
The earthquake was a natural disaster that affected thousands of families.
地震は自然災害で、何千もの家族に影響を与えました。
C1 noun /daɪˈsɛkʃən/

dissection

解剖
Meaning
the act of cutting apart or analyzing something in detail, especially a body or structure
Example
The dissection of the specimen revealed important details about its structure.
標本の解剖はその構造に関する重要な詳細を明らかにした。
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。
C1 noun /dɪˈrɪʒən/

derision

嘲笑
Meaning
Contemptuous ridicule or mockery.
Example
His ideas were greeted with derision by the audience.
彼のアイデアは観客によって嘲笑された。
C1 noun /ˈdɛdlɒk/

deadlock

行き詰まり
Meaning
a situation in which progress is impossible because of disagreement
Example
Negotiations reached a deadlock after neither side agreed to compromise.
交渉は双方が妥協に同意しなかったため行き詰まりました。
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。
B2 noun /den/

Den

巣穴; 快適な部屋; 不法活動の場所
Meaning
a wild animal's lair or home; a small, comfortable room; a place for illegal activities
Example
The fox disappeared into its den when it sensed danger approaching.
キツネは危険が迫るのを感じて、巣穴に姿を消しました。
A1 noun /deɪts/

Dates

デーツ
Meaning
sweet brown oval fruits that grow on date palm trees
Example
Dates are commonly eaten during Ramadan to break the fast.
デーツはラマダン中に断食を解くためによく食べられます。
C1 adjective /dɪsˈɪntrəstɪd/

disinterested

無関心
Meaning
not influenced by personal interest; impartial or neutral
Example
The judge remained disinterested in the case.
裁判官はその事件に無関心のままでした。
B2 noun /dɪsˈɔːrdər/

disorder

障害
Meaning
A state of confusion or lack of order; also a medical or mental condition.
Example
The protest ended in disorder when the crowd became violent.
抗議は群衆が暴力的になったときに障害に終わった。
B2 noun /dɪˈsɛnt/

descent

降下 / 祖先
Meaning
the action of moving downward, falling, or dropping; ancestry or origin
Example
The climbers began their descent from the mountain peak.
登山者は山頂から降下を始めました。
C1 noun/verb /ˈdiːkɔɪ/

decoy

おとり
Meaning
something or someone used to lure or mislead
Example
The hunters used a wooden duck as a decoy.
狩人たちは木製のカモをデコイとして使った。
C2 noun /dɪsˈdʒʌŋkʃən/

disjunction

分裂
Meaning
A lack of connection between things; separation or disunity.
Example
There is a clear disjunction between theory and practice.
理論と実践の間には明確な分裂があります。
C1 noun /ˈdeɪ.li.ə/

Dahlia

ダリア
Meaning
a garden plant with brightly colored flowers that bloom in summer and autumn
Example
She planted colorful dahlias in her garden last summer.
彼女は昨年の夏に庭にカラフルなダリアを植えました。
B1 noun, verb /ˈdɪskaʊnt/

discount

割引
Meaning
A reduction in the usual price of something; to reduce the price of something.
Example
The store offered a 20% discount on all electronics.
その店はすべての電子製品に20%の割引を提供しました。
C1 adverb /ˈduːli/

Duly

適切に, 時間通りに
Meaning
in accordance with what is required or appropriate; at the proper time
Example
The documents were duly signed and submitted.
書類は適切に署名され、提出されました。
C1 adjective /dɪˈsɜːrnəbl/

discernible

明白な
Meaning
able to be seen, recognized, or understood
Example
There was a discernible change in his behavior.
彼の行動には明らかな変化があった。
C1 noun /ˈdɛspɒt/

despot

暴君
Meaning
a ruler with absolute power, often ruling in a cruel or oppressive way
Example
The despot ruled the nation with fear and violence.
暴君は恐怖と暴力で国を支配した。
C2 verb /ˌdɪsəˈbjuːz/

disabuse

誤解を解く
Meaning
To free someone from a false belief or misconception.
Example
The teacher tried to disabuse the students of their misunderstanding.
先生は生徒たちの誤解を解こうとしました。
C2 adjective /dɪˈluːsɪv/

delusive

欺瞞的
Meaning
Giving a false or misleading impression; deceptive.
Example
His promises turned out to be delusive and untrustworthy.
彼の約束は欺瞞的で信頼できないことが証明されました。
C1 adjective /ˈdɪs.ə.plɪ.ner.i/

Disciplinary

懲戒的
Meaning
relating to discipline; intended to correct behavior
Example
The company took disciplinary action against the employee.
会社は従業員に対して懲戒措置を取りました。
A1 noun /ˈdɒktər/

doctor

医者
Meaning
A qualified medical professional who treats illnesses and injuries.
Example
The doctor prescribed medicine for the patient.
医者は患者に薬を処方しました。
C1 noun ˈdɪskɔrd

discord

不和
Meaning
Disagreement or conflict between people or ideas.
Example
Discord among people disrupts societal stability.
人々の間の不和は社会の安定を乱す。
B2 noun /ˈdiː.sən.si/

Decency

品位
Meaning
behavior that conforms to accepted standards of morality or respectability
Example
She had the decency to apologize for her mistake immediately.
彼女はすぐに自分の間違いを謝る品位を示しました。
A2 noun /ˈdjuː.ti/

Duty

義務
Meaning
something that one is expected or required to do; moral or legal obligation
Example
It is our duty as citizens to vote in elections.
市民として選挙で投票することは私たちの義務です。
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。
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 /ˌdiːpɔːrˈteɪʃən/

deportation

Meaning
The act of expelling a foreigner from a country.
Example
The deportation of hundreds of workers sparked international criticism.
B2 noun ডিজিটাল ডিটক্স

digital detox

デジタルデトックス
Meaning
A period of time during which a person refrains from using electronic devices such as smartphones or computers, regarded as an opportunity to reduce stress or focus on social interaction in the physical world.
Example
A digital detox can help reduce hand fatigue.
デジタルデトックスは手の疲労を減らすのに役立ちます。
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。
C1 noun /ˈdjuːplɛks/

duplex

デュプレックスハウス
Meaning
A house or apartment divided into two separate residences.
Example
They live in a duplex near the city center.
彼らは市の中心近くのデュプレックスに住んでいます。
B2 adjective /ˈdɛlɪkət/

delicate

壊れやすい
Meaning
Easily broken or damaged; requiring careful handling.
Example
The vase is very delicate, so handle it with care.
この花瓶はとても壊れやすいので、注意して扱ってください。
B2 noun /ˈdeb.ɪt/

Debit

デビット; 借金; 引き落とし
Meaning
an entry recording an amount owed; money taken from a bank account
Example
The bank showed a debit of fifty dollars from my checking account.
銀行は私の当座預金口座から50ドルのデビットを表示しました。
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。
C1 noun /ˌdɪstɪˈleɪʃən/

distillation

蒸留
Meaning
The process of purifying a liquid by heating and cooling; the extraction of the essential meaning.
Example
Distillation is commonly used to produce alcoholic beverages.
蒸留はアルコール飲料の製造によく使用されます。
A2 noun /dɪˈsɪʒənz/

decisions

決定
Meaning
A conclusion or resolution reached after consideration; the action or process of deciding something.
Example
Making the right decisions in time was key to the project's success.
時間内に正しい決定を下すことがプロジェクトの成功の鍵でした。
C1 noun/verb /dɪsˈkwaɪət/

disquiet

Meaning
A feeling of worry or unease; to make someone feel anxious or uneasy.
Example
The strange silence filled the room with disquiet.
C1 verb /dɪsˈtrʌst/

distrust

不信
Meaning
to have no confidence or trust in someone or something
Example
Many people distrust politicians.
多くの人々は政治家を信用しません。
A2 noun /ˈden.tɪst/

Dentist

歯医者
Meaning
a medical professional who treats teeth and oral health
Example
I need to visit the dentist for a regular checkup.
定期検診のために歯医者に行かなければなりません。
C2 noun /draɪd ˈfɛnjʊˌɡriːk livz/

Dried Fenugreek Leaves

乾燥フェヌグリークの葉
Meaning
dehydrated leaves of the fenugreek plant used as a herb in cooking
Example
Add dried fenugreek leaves to the curry for extra flavor.
カレーに乾燥フェヌグリークの葉を加えて、さらに風味を加えます。
B1 noun dɪˈskʌvəriz

discoveries

発見
Meaning
The action or process of finding or learning something for the first time; facts or things discovered.
Example
His discoveries revolutionized multiple fields.
彼の発見は複数の分野で革命を起こした。
C2 adjective /dɪˈklæməˌtɔri/

declamatory

力強い演説スタイル
Meaning
speaking in a loud, rhetorical, or dramatic way
Example
The politician’s declamatory style impressed some but irritated others.
その政治家の力強い演説スタイルは一部の人々に感銘を与えたが、他の人々には不快感を与えた。
B2 adjective /dɪˈstrʌktɪv/

Destructive

破壊的な
Meaning
causing damage; harmful
Example
The hurricane was highly destructive to coastal areas.
ハリケーンは沿岸地域に非常に破壊的でした。
C1 noun dɪˌzɝː.t̬ə.fɪˈkeɪ.ʃən

desertification

砂漠化
Meaning
The process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.
Example
Deforestation accelerates desertification.
森林伐採は砂漠化を加速させます。
C1 noun /dɪˌnɒmɪˈneɪʃən/

denomination

宗派, 価値
Meaning
a recognized autonomous branch of the Christian Church; a unit of value or currency
Example
The church belongs to a Protestant denomination.
その教会はプロテスタントの宗派に属しています。
A2 adjective /dʌtʃ/

dutch

オランダの
Meaning
relating to the Netherlands, its people, or their language
Example
She enjoys Dutch paintings from the 17th century.
彼女は17世紀のオランダの絵画を楽しんでいます。
C1 noun /ˈdɛljuːdʒ/

deluge

洪水
Meaning
A severe flood; an overwhelming quantity of something.
Example
The town was hit by a deluge of rain in just a few hours.
その町は数時間で豪雨の洪水に襲われました。
B2 noun daɪˈlem.ə

dilemma

ジレンマ, 困難な選択
Meaning
A situation in which a difficult choice has to be made between two or more alternatives.
Example
She faced a moral dilemma at work.
彼女は職場で道徳的なジレンマに直面していた。
B2 verb /dɪˈspaɪz/

despise

軽蔑する
Meaning
to regard with contempt; to hate strongly
Example
She despises dishonesty in all its forms.
彼女はすべての不正直を軽蔑している。
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。
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 /dɪˈsper/

Despair

絶望
Meaning
the complete loss or absence of hope; a state of feeling hopeless
Example
After losing his job, he fell into despair and couldn't see any way forward.
仕事を失った後、彼は絶望し、前に進む方法が見えなかった。
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.
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。
C1 adjective /ˈdjuːtɪfəl/

Dutiful

義務感のある; 尊敬すべき; 従順な
Meaning
conscientiously fulfilling one's duty; obedient; respectful
Example
She is a dutiful daughter who always helps her parents.
彼女はいつも両親を助ける義務感のある娘です。
C1 noun/verb /dɪsˈdeɪn/

disdain

Meaning
The feeling that someone or something is unworthy of respect; to regard with contempt.
Example
She looked at the messy room with open disdain.
C2 verb /dɪˈsɪmjʊˌleɪt/

dissimulate

偽る
Meaning
To disguise or conceal one's true feelings or intentions.
Example
He tried to dissimulate his fear with a smile.
彼は笑顔で恐怖を隠そうとした。
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 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。
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。
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。
B2 noun /ˌdek.ləˈreɪ.ʃən/

Declaration

宣言; 発表; 告知
Meaning
a formal or explicit statement or announcement; an official proclamation
Example
The president's declaration of independence marked a historic moment for the nation.
大統領の独立宣言は、国にとって歴史的な瞬間を意味していました。
C1 adjective /dɪˈspɜːrst/

dispersed

散らばった
Meaning
Scattered or spread across a wide area.
Example
The dispersed population made it difficult to provide public services.
散らばった人口は公共サービスの提供を困難にしました。
C1 verb /dɪˈpriːʃieɪt/

depreciate

価値が下がる
Meaning
to reduce in value over time
Example
Cars tend to depreciate quickly in their first few years.
車は最初の数年間で急速に価値が下がる傾向があります。
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 noun /ˌdɪsərˈteɪʃən/

dissertation

論文
Meaning
A long piece of writing on a particular subject, usually written for a university degree.
Example
She spent two years writing her doctoral dissertation.
彼女は博士論文を書くのに2年を費やしました。
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。
B2 verb /dɪsˈtʃɑːrdʒ/

discharge

退院
Meaning
to release or dismiss from duty; to emit or give off
Example
The hospital will discharge the patient tomorrow.
病院は明日患者を退院させる。
C2 noun /dɪsˈjuːnjən/

disunion

分裂
Meaning
the state of being separated or not united
Example
Civil wars often result from national disunion.
内戦はしばしば国家の分裂から起こる。
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 /ˈdɛdˌpæn/

deadpan

無表情
Meaning
Deliberately impassive or expressionless in manner.
Example
She delivered the joke in a completely deadpan voice.
彼女は完全に無表情な声でジョークを言った。
C1 verb /ˌdiːˈbʌŋk/

debunk

虚偽を暴露する、神話を打破する
Meaning
Expose the falseness or hollowness of (a myth, idea, or belief).
Example
Scientists debunked the myth that vaccines cause autism.
科学者たちは、ワクチンが自閉症を引き起こすという神話を打破した。
C2 noun /ˈdeb.juː.tɑːnt/

debutante

社会で初めて公式に登場する若い女性
Meaning
A young woman making her first formal appearance in society.
Example
The debutante wore a white gown at the ball.
デビュータントは舞踏会で白いドレスを着ていました。
C1 adjective /ˈdɑːsəl/ or /ˈdəʊsaɪl/

docile

従順な
Meaning
easily managed, taught, or controlled; submissive
Example
The docile puppy quickly learned new tricks.
従順な子犬はすぐに新しい技を覚えました。
A2 noun /ˈdrʌɡˌstɔːr/

drugstore

薬局
Meaning
A retail store that sells medicines, health-related products, and sometimes cosmetics or snacks.
Example
I stopped by the drugstore to buy some cold medicine.
風邪薬を買うために薬局に行きました。
B2 adjective /ˈdæmɪdʒɪŋ/

damaging

Meaning
causing harm or injury
Example
The storm caused damaging effects to the crops.
B2 adjective /dɪˈpɛndəbl/

dependable

信頼できる
Meaning
able to be trusted or relied on; consistently reliable
Example
She is a dependable colleague who always meets deadlines.
彼女はいつも締め切りを守る信頼できる同僚です。
C2 noun /ˌdaɪ.jʊˈret.ɪk/

diuretic

利尿剤
Meaning
A substance that promotes the production of urine.
Example
Coffee has a mild diuretic effect.
コーヒーは軽い利尿作用があります。
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。
A2 verb /ˌdɪsəˈpɪər/

disappear

消える
Meaning
to cease to be visible; to vanish
Example
The magician made the rabbit disappear.
マジシャンはウサギを消した。
C1 noun /ˈduːmz.deɪ/

Doomsday

世界の終わり; 最後の審判の日
Meaning
the last day of the world's existence; a time of catastrophic destruction
Example
The preacher spoke about doomsday and the importance of preparing spiritually.
伝道師は世界の終わりと霊的な準備の重要性について話しました。
C1 adjective /dɪˈvaʊt/

devout

献身的
Meaning
Deeply religious or sincere.
Example
He is a devout believer who prays every day.
彼は毎日祈る献身的な信者です。
A2 verb, noun /dɪsˈlaɪk/

dislike

嫌う
Meaning
to feel distaste or aversion for someone or something; a feeling of aversion
Example
I really dislike eating spicy food.
私は本当に辛い食べ物を食べるのが嫌いです。
C1 noun /ˌdɪsbɪˈliːvər/

disbeliever

不信者
Meaning
a person who does not believe in something, especially a religion or idea
Example
He was called a disbeliever for rejecting the traditional faith.
彼は伝統的な信仰を拒否したため、不信者と呼ばれました。
C2 verb /dɪˈfoʊlieɪt/

defoliate

葉を落とす
Meaning
to strip leaves from a tree, plant, or area, often using chemicals
Example
The farmers defoliated the fields before harvest.
農家は収穫前に畑の葉を取り除きました。
C1 verb /dɛlv/

delve

Meaning
To investigate deeply; to dig into a subject or area.
Example
The researcher delved into ancient manuscripts to find clues.
B2 verb /dɪˈspoʊz/

dispose

処分する
Meaning
To get rid of something, or to arrange or incline towards something.
Example
He disposed of the old furniture responsibly.
彼は古い家具を責任を持って処分しました。
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。
C1 adjective /dɪˈɡreɪdɪd/

degraded

劣化した
Meaning
Reduced in quality, dignity, or condition.
Example
The villagers were forced to live in degraded conditions.
村人たちは劣化した状態で暮らさざるを得なかった。
C1 adjective /dɪˈvɪzəbl/

divisible

割り切れる
Meaning
Capable of being divided by another number without leaving a remainder.
Example
Twelve is divisible by three and four.
12は3と4で割り切れます。
A2 noun /ˈdɪʃ ˌwɒʃər/

Dish washer

食器洗い機
Meaning
an appliance for washing dishes automatically
Example
We installed a new dishwasher in our kitchen last week.
先週、私たちはキッチンに新しい食器洗い機を設置しました。
B1 noun dɪˈfens

defense

防御
Meaning
The action of defending from or resisting attack; protection from harm or danger.
Example
Defense was one of the central subjects.
防御は主要なテーマの一つだった。
A2 noun /dʌk/

Duck

アヒル
Meaning
a waterbird with webbed feet and a broad flat bill
Example
The duck swam gracefully across the lake.
そのカモは湖を優雅に泳いでいました。
C1 noun /ˈdel.ɪ.kə.si/

Delicacy

繊細さ; 高級な料理;
Meaning
fineness of texture or structure; a choice or expensive food; sensitivity in handling
Example
The chef prepared a local delicacy that was famous throughout the region.
シェフは地域全体で有名な地元のデリカシーを準備しました。
A1 verb /driːm/

dream

夢を見る
Meaning
to have thoughts and images in your mind while sleeping; to hope for
Example
I often dream about flying in the sky.
私はよく空を飛ぶ夢を見ます。
C1 noun /daɪˈvɜː.ʃən/

Diversion

迂回
Meaning
the action of turning something aside from its course; an activity that diverts the mind
Example
The road closure forced a diversion through the countryside for all travelers.
道路の閉鎖により、すべての旅行者は田舎道を通って迂回することを余儀なくされました。
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。
B2 noun /dɒk/

dock

ドック
Meaning
a structure where ships are loaded, unloaded, or repaired
Example
The ship stayed at the dock for two days.
船はドックに2日間停泊していました。
C1 adjective /dɪˈfʌŋkt/

defunct

営業停止、廃止
Meaning
No longer existing, operating, or functioning.
Example
The company became defunct after the financial crisis.
その会社は金融危機の後で廃業しました。
C1 adjective /dɪˈbɪl.ɪ.teɪ.tɪŋ/

debilitating

衰弱させる
Meaning
Making someone or something weak and infirm.
Example
The disease had a debilitating effect on his health.
その病気は彼の健康に衰弱をもたらした。
C1 adjective /ˈdɛkədənt/

decadent

堕落的, 贅沢な
Meaning
Characterized by or reflecting a state of moral or cultural decline; excessively self-indulgent.
Example
The party was filled with decadent luxury and excess.
パーティーは堕落的な贅沢と過剰で満たされていました。
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 adjective /dɪˈstrɛst/

distressed

苦しんでいる
Meaning
feeling or showing extreme anxiety, sorrow, or pain
Example
She looked distressed after hearing the bad news.
悪い知らせを聞いた後、彼女は苦しんでいるように見えました。
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.