diminution
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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。
B1 adjective /ˌdɪs.əˈpɔɪn.tɪd/

Disappointed

がっかり
Meaning
sad because something has not happened or is not as good as expected
Example
She was disappointed with her exam results.
彼女は試験の結果にがっかりしていた。
C2 adjective /ˌdɛl.ɪˈtɪə.ri.əs/

deleterious

有害な
Meaning
Causing physical or mental harm or damage.
Example
Smoking has deleterious effects on health.
喫煙は健康に有害な影響を与えます。
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 /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。
C1 verb /dɪˈbɑːr/

debar

禁止する
Meaning
To officially prevent someone from doing something.
Example
He was debarred from entering the competition due to cheating.
彼は不正行為のため競技への参加が禁止されました。
C1 adjective dɒɡˈmæt.ɪk

dogmatic

教条的
Meaning
Being inclined to lay down principles as incontrovertibly true; characterized by arrogant assertion of unproven principles.
Example
His dogmatic approach to politics made discussions difficult.
彼の教条的なアプローチは、議論を難しくしました。
B2 noun /diˈoʊ.dər.ənt/

Deodorant

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

debut

デビュー
Meaning
The first public appearance or performance of someone or something.
Example
The young actor made his debut on the big stage.
若い俳優は大きな舞台でデビューを果たした。
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。
C1 adjective /diːˈsɛntrəlaɪzd/

decentralized

分散型
Meaning
Controlled by several local offices or authorities rather than one single one.
Example
The decentralized system allowed for more control at local levels.
分散型システムは、ローカルレベルでのより多くの制御を可能にしました。
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。
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 verb /ˈdiːfælˌkeɪt/

defalcate

横領する
Meaning
to misuse or embezzle money that one is responsible for
Example
The accountant was accused of defalcating company funds.
会計士は会社の資金を横領したと非難されました。
C1 noun /ˈdɪɡnɪˌtɛri/

dignitary

重要人物
Meaning
a person considered to be important because of high rank or office
Example
Several foreign dignitaries attended the state banquet.
数人の外国の重要人物が国の晩餐会に出席しました。
C1 verb /ˌdɪsəˈlaʊ/

disallow

許可しない
Meaning
to refuse to allow or accept something
Example
The referee disallowed the goal for offside.
審判はオフサイドのためゴールを認めませんでした。
B1 adjective /ˈdɛdɪˌkeɪtɪd/

dedicated

献身的な
Meaning
devoted to a cause, task, or purpose
Example
She is a dedicated teacher who goes above and beyond for her students.
彼女は生徒のために上を行き、限界を超えていく献身的な教師です。
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 /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 /dɪsˈsɪmɪlər/

dissimilar

異なる
Meaning
Not alike; different.
Example
Though they are twins, their personalities are dissimilar.
彼らは双子だが、性格は異なる。
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 adjective /dɪsˈdʒʌŋktɪv/

disjunctive

選択的
Meaning
Serving to separate or divide; expressing a choice between alternatives.
Example
In grammar, 'or' is a disjunctive conjunction.
文法では、'または' は選択的接続詞です。
C1 adjective /dɪˈrɒɡətɔːri/

derogatory

侮辱的
Meaning
Showing a critical or disrespectful attitude.
Example
The article contained derogatory comments about the politician.
その記事には政治家について侮辱的なコメントが含まれていました。
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。
A2 noun dɪˈveləpmənt

development

発展
Meaning
The process of developing or being developed; growth or progress.
Example
Development of Bengali society was hindered.
ベンガル社会の発展は妨げられた。
B1 noun /dɪˈbeɪt/

Debate

討論
Meaning
a formal discussion of opposing viewpoints; argument with reasoned points
Example
The political debate lasted for three hours with passionate arguments.
政治的な討論は3時間続き、情熱的な議論が交わされました。
B2 adjective /dɪˈzaɪərəbl/

desirable

望ましい
Meaning
worth having or wanting; attractive
Example
The location of the house was highly desirable, with great views.
その家の場所は非常に望ましく、素晴らしい景色がありました。
A2 noun /ˈdɛsktɒp/

desktop

Meaning
a computer designed to be used on a desk, typically with a separate monitor, keyboard, and mouse
Example
I keep my documents on the desktop for easy access.
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。
B1 noun ˌdemənˈstreɪʃənz

demonstrations

デモンストレーション
Meaning
The action or process of showing the existence or truth of something by giving proof or evidence.
Example
Demonstrations occurred on March 11.
デモンストレーションは3月11日に行われました。
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。
C1 noun /ˌdiː.mɑːˈkeɪ.ʃən/

Demarcation

境界設定
Meaning
the action of fixing the boundary or limits of something; separation or division
Example
The demarcation between public and private land was clearly marked.
公共の土地と私有地の境界設定は明確に示されていた。
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。
A2 noun /ˈdʌst.bɪn/

Dustbin

ゴミ箱
Meaning
a container for holding waste or garbage before disposal
Example
Please throw the paper into the dustbin after use.
使用後は紙をゴミ箱に捨ててください。
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 noun /dɪˈveləpər/

developer

開発者
Meaning
a person or company that creates software, buildings, or land projects
Example
She works as a software developer at a tech company.
彼女はテクノロジー企業でソフトウェア開発者として働いています。
C1 noun /ˈdeɪ.ə.ti/

deity

神
Meaning
a god or goddess
Example
The temple is dedicated to a Hindu deity.
その寺院はヒンドゥー教の神に捧げられています。
C2 adjective /dɪˈskrɛpənt/

discrepant

不一致の
Meaning
showing a difference or inconsistency
Example
The witnesses gave discrepant accounts of the incident.
目撃者たちは事件について食い違った証言をしました。
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。
C1 noun /ˌdiːˈmer.ɪt/

Demerit

欠点; 不利; 過ちや違反に対して与えられるマーク
Meaning
a fault or disadvantage; a mark given for a fault or offense
Example
The student received a demerit for arriving late to class repeatedly.
その生徒は繰り返し遅刻したため、デメリットを受けました。
B2 noun /diːp ˈkʌlər/

Deep colour

深い色
Meaning
a rich, intense, or dark shade of any color
Example
The artist used deep colours to create a dramatic effect.
アーティストはドラマチックな効果を作り出すために深い色を使いました。
B1 noun /ˌdes.tɪˈneɪ.ʃən/

Destination

目的地
Meaning
the place to which someone or something is going; the ultimate purpose or end point
Example
Paris was their dream destination for their honeymoon trip.
パリは彼らのハネムーン旅行の夢の目的地でした。
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。
A2 verb /dɪˈstrɔɪ/

destroy

破壊する
Meaning
to damage something so badly that it cannot be used
Example
The fire destroyed the entire building.
火事が建物全体を破壊しました。
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。
C1 noun /ˈdaʊn.pɔːr/

Downpour

豪雨; 急な大雨
Meaning
a heavy fall of rain; a sudden heavy rainfall
Example
The sudden downpour caught everyone off guard and soaked the outdoor event.
突然の豪雨でみんなが驚き、屋外イベントはずぶ濡れになった。
C1 verb /dɪsˈɑːrm/

disarm

武装解除する
Meaning
to take weapons away from someone; to make someone feel less hostile
Example
The soldiers were ordered to disarm the rebels.
兵士たちは反乱者の武装を解除するよう命じられた。
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。
C1 adjective /dɪˈskrɪmɪˌneɪtɪŋ/

discriminating

選り好みする
Meaning
Having refined taste or good judgment; able to recognize subtle differences.
Example
She is known for her discriminating taste in art.
彼女は芸術における選り好みの味で知られています。
C2 adjective /dɪˈmjʊər/

demure

控えめ
Meaning
reserved, modest, and shy
Example
She gave him a demure smile.
彼女は控えめな笑顔を彼に向けた。
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。
C1 verb /dɪˈbeɪs/

debase

低下させる
Meaning
to reduce the quality, value, or dignity of something
Example
Corruption can debase the values of a society.
腐敗は社会の価値観を低下させる可能性があります。
C1 verb /dɪsˈbænd/

disband

解散する
Meaning
to break up and stop functioning as a group or organization
Example
The club decided to disband after twenty years of activity.
クラブは20年の活動後に解散することを決定した。
B2 adjective /ˈdɛntəl/

dental

歯科の
Meaning
relating to teeth or dentistry
Example
She goes for a dental checkup every six months.
彼女は6か月ごとに歯科検診を受けます。
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。
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。
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。
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。
C1 verb /diːˈfɒrɪst/

deforest

Meaning
to clear an area of trees, usually on a large scale
Example
The region has been heavily deforested for agriculture.
B2 noun /ˈdɛnɪmz/

denims

デニムのパンツ
Meaning
pants or clothes made from denim fabric, usually jeans
Example
He wore blue denims with a white shirt.
彼は白いシャツと青いデニムを履いていた。
B2 noun /dɪˈvoʊ.ʃən/

Devotion

献身; 忠誠; 熱意
Meaning
love, loyalty, or enthusiasm for a person, activity, or cause
Example
Her devotion to helping others made her a beloved figure in the community.
他人を助けることへの献身が、彼女をコミュニティで愛される存在にしました。
C2 noun /ˈdɛntɪfrɪs/

dentifrice

歯磨き粉
Meaning
a substance such as powder, paste, or liquid used to clean teeth
Example
He bought a new herbal dentifrice from the pharmacy.
彼は薬局で新しいハーブの歯磨きを買った。
C1 noun /ˌdɜːrməˈtɑːlədʒɪst/

dermatologist

皮膚科医
Meaning
A doctor who specializes in the treatment of skin diseases.
Example
She consulted a dermatologist for her skin allergy.
彼女は皮膚のアレルギーのために皮膚科医に相談した。
C1 noun /ˌdɪfəˈrɛnʃɪˈeɪʃən/

differentiation

差別化, 分化
Meaning
The action or process of differentiating or distinguishing between things.
Example
Differentiation from competitors can create a unique market position.
競合他社との差別化により、ユニークな市場ポジションを作り出すことができます。
C2 noun /ˈdɛswɪˌtuːd/

desuetude

廃止
Meaning
a state of disuse or inactivity
Example
The old law has fallen into desuetude.
古い法律は廃止されました。
B2 adjective/noun ˌdem.əˈɡræf.ɪk

demographic

人口統計学的
Meaning
Relating to the structure of populations; statistical data relating to the population and particular groups within it.
Example
The company analyzes demographic trends before launching a product.
会社は製品を発売する前に人口統計学的傾向を分析します。
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 /ˈdekərəs/

decorous

品位のある
Meaning
showing proper and polite behavior; marked by good taste
Example
The audience gave a decorous applause after the performance.
観客は公演後に品位のある拍手を送りました。
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。
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。
C1 verb ˈdiː.vi.eɪt

deviate

逸脱する
Meaning
To depart from an established course or normal pattern.
Example
He tends to deviate from the original plan.
彼は元の計画から外れる傾向がある。
B1 noun /ˈded.laɪn/

Deadline

締め切り;
Meaning
the latest time or date by which something should be completed
Example
The deadline for submitting the project is next Friday.
プロジェクト提出の締め切りは来週の金曜日です。
C1 noun/verb /dɛnt/

dent

へこみ
Meaning
a small hollow mark on the surface of something; to make a small hollow mark
Example
The accident left a dent in the car door.
事故で車のドアにへこみが残りました。
C1 noun /ˌdɪsəˈbiːdiəns/

disobedience

不従順
Meaning
failure or refusal to obey rules, laws, or authority
Example
The child's disobedience worried his parents.
子供の不従順は両親を心配させました。
C1 verb /dɪˈdjuːs/

deduce

推測する
Meaning
to reach a conclusion by reasoning or inference
Example
From the evidence, the detective deduced that the suspect was lying.
証拠から、探偵は容疑者が嘘をついていることを推測しました。
C2 noun /ˌdɪsɪnklɪˈneɪʃən/

disinclination

不本意
Meaning
a lack of willingness or desire to do something
Example
She showed a clear disinclination to join the meeting.
彼女は会議に参加する明確な不本意を示した。
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。
C1 noun /dɪˈprɛsənt/

depressant

抑制剤
Meaning
A drug that reduces functional or nervous activity in the body.
Example
Alcohol acts as a depressant on the central nervous system.
アルコールは中枢神経系に抑制剤として作用します。
C2 verb /daʊz/

dowse

水や鉱物を占いの棒で探す; または液体で浸すまたは消火する。
Meaning
To search for underground water or minerals using a divining rod; also to drench or extinguish with liquid.
Example
The farmer tried to dowse for water in the dry field.
農夫は乾燥した畑で水を探すためにダウズしようとした。
C1 verb /daɪˈvɛst/

divest

Meaning
to strip away possessions, rights, or assets; to rid oneself of
Example
The company decided to divest its unprofitable division.
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。
A2 noun /dɪˈɡriː/

degree

学位 / 程度
Meaning
an amount or level of something; an academic qualification
Example
She earned a degree in engineering.
彼女は工学の学位を取得しました。
B2 noun /ˈdiː.fekt/

Defect

欠陥
Meaning
a shortcoming, imperfection, or lack; a fault or flaw in something
Example
The manufacturing defect caused the product to fail after only one week.
製造上の欠陥により、製品はわずか1週間で故障しました。
B2 noun, verb /ˈdɪskɔːrs/

discourse

談話, 講義
Meaning
Written or spoken communication or debate.
Example
The professor gave a discourse on ancient philosophy.
教授は古代哲学についての講義を行った。
A2 verb /ˈdraɪvɪŋ/

driving

運転
Meaning
the act of controlling and operating a vehicle; guiding or motivating something forward
Example
She loves driving along the coast on weekends.
彼女は週末に沿岸をドライブするのが大好きです。
C1 noun ˌdɪdʒɪˈnɛəreɪʃən

degeneration

退化
Meaning
The process of decline or deterioration in structure or function.
Example
The degeneration of brain cells leads to cognitive decline.
脳細胞の退化は認知機能の低下を引き起こします。
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。
B2 noun /dɪˈpləʊməsi/

diplomacy

Meaning
The profession, activity, or skill of managing international relations or handling affairs tactfully.
Example
Effective diplomacy helped avoid the conflict.
B1 adverb /ˈdaʊnwədz/

Downwards

下向き
Meaning
towards a lower place or position; in a downward direction
Example
The ball rolled downwards along the slope.
ボールは坂を下向きに転がった。
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 /daɪˈvɛstɪtʃər/

divestiture

事業売却
Meaning
the action of selling off or disposing of business interests or assets
Example
The divestiture of the subsidiary was completed last year.
子会社の事業売却は昨年完了しました。
C1 adjective /dɪˈmɛntɪd/

demented

狂った / 非理性的
Meaning
behaving irrationally due to mental illness or extreme excitement
Example
He looked demented after hearing the shocking news.
彼は衝撃的なニュースを聞いた後、正気を失ったように見えました。
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 /ˈdɛltə/

delta

デルタ
Meaning
A landform at the mouth of a river where it splits into several outlets.
Example
The Nile Delta is one of the most fertile regions in Egypt.
ナイル川デルタはエジプトで最も肥沃な地域の1つです。
C1 verb /ˈdɛnɪˌɡreɪt/

denigrate

貶める
Meaning
to criticize unfairly; to belittle or disparage someone or something
Example
He was quick to denigrate the achievements of his colleagues.
彼は同僚の業績をすぐに貶めました。
A2 noun dɪˈskʌʃ.ənz

discussions

議論
Meaning
The action or process of talking about something in order to reach a decision or to exchange ideas.
Example
Discussions promote collaboration.
ディスカッションは協力を促進します。
A2 verb, noun /drɒp/

drop

落とす / 液滴
Meaning
to let something fall; a small quantity of liquid
Example
Be careful not to drop your phone.
携帯電話を落とさないように気をつけてください。
B2 noun dɪˈplɔɪmənt

deployment

展開
Meaning
The action of bringing resources into effective action.
Example
The deployment of the new software was completed successfully.
新しいソフトウェアの展開は成功裏に完了しました。
B2 noun /ˈdɛsɪməl/

decimal

十進法
Meaning
A number system based on 10; a number expressed in the base-10 system.
Example
The number 0.75 is a decimal.
0.75は十進法の数です。
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。
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。
C2 verb /dɪsˈteɪn/

distain

軽蔑する
Meaning
to treat with scorn or contempt (archaic form of disdain)
Example
He would never distain those who had less fortune than him.
彼は決して自分より運の悪い者を軽蔑しなかった。
C1 verb dɪˈlɪnieɪt

delineate

詳細に描写する
Meaning
To describe or portray something precisely
Example
The artist delineated the scene in intricate detail.
アーティストはシーンを複雑な詳細で描写しました。
C2 adjective /ˌdaɪəˈkrɪtɪkəl/

diacritical

ダイアクリティカル
Meaning
Relating to a mark added to a letter to indicate a different pronunciation or stress.
Example
The word résumé has diacritical marks that change its meaning from resume.
‘レジュメ’という言葉には、意味を変えるダイアクリティカルマークがあります。
C1 noun, adjective /dɪˈrɪvətɪv/

derivative

派生物
Meaning
Something that is based on another source; in math, a measure of how a function changes.
Example
The film was criticized for being too derivative of earlier works.
その映画は、前の作品を模倣しすぎて批判されました。
C2 adjective /daɪˈvɜːrtɪbəl/

divertible

転用可能な
Meaning
capable of being turned aside or redirected
Example
Funds from the budget are not legally divertible.
予算からの資金は合法的に転用できません。
A2 adjective, noun /dɛd/

dead

死んだ
Meaning
No longer alive; the end of life.
Example
The old tree is completely dead.
その古い木は完全に死んでいる。
C1 verb /dɪˈsɛm.ɪ.neɪt/

disseminate

普及する
Meaning
To spread or give out something, especially news, information, ideas, etc., to a lot of people.
Example
Social media helps to disseminate information quickly.
ソーシャルメディアは情報を迅速に普及するのに役立ちます。
B1 noun /doʊˈneɪ.ʃən/

Donation

寄付; 貢献
Meaning
something that is given to a charity, especially a sum of money; the act of giving
Example
The generous donation helped the hospital purchase new medical equipment.
寛大な寄付が病院に新しい医療機器を購入するのに役立ちました。
C1 noun /dɪsˈlɛksiə/

dyslexia

ディスレクシア
Meaning
A learning disorder characterized by difficulty reading due to problems identifying speech sounds and decoding words.
Example
The teacher used special methods to help the student with dyslexia.
先生はディスレクシアの学生を助けるために特別な方法を使いました。
C1 noun /dɪˌpriː.ʃiˈeɪ.ʃən/

depreciation

減価償却
Meaning
A reduction in the value of an asset with the passage of time, due to wear and tear.
Example
The car's depreciation rate is high after five years.
車の減価償却率は5年後に高くなります。
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。
C1 verb /dɪsˈpruːv/

disprove

反証する
Meaning
to show that something is false or wrong
Example
The scientist worked hard to disprove the old theory.
科学者は古い理論を反証するために一生懸命働いた。
C1 adjective /ˈdrɪəri/

dreary

陰気な / 退屈な
Meaning
dull, bleak, and lifeless; depressing
Example
The long, dreary winter made everyone feel gloomy.
長くて退屈な冬は、皆を憂鬱にさせた。
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 adjective /daɪˈɡrɛsɪv/

digressive

主題から外れる傾向
Meaning
Tending to depart from the main subject in speech or writing.
Example
The speaker's digressive style made the lecture difficult to follow.
話者のダイグレッシブなスタイルは講義を追いかけるのを難しくした。
B2 verb /dɪsˈmɪs/

dismiss

解雇する, 却下する
Meaning
to remove someone from a job or position; to decide something is not important
Example
The manager dismissed the employee for being late too often.
マネージャーは遅刻が多すぎるため、従業員を解雇しました。
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。