dysentery
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C1 noun /ˈdɪsənˌtɛri/

dysentery

腸の病気（血液と粘液を伴う下痢）
Meaning
An infection of the intestines resulting in severe diarrhea with blood and mucus.
Example
Many soldiers suffered from dysentery during the war.
多くの兵士たちは戦争中にディスエントリーに苦しんだ。
A2 adjective /ˈdɜː.ti/

Dirty

汚い; よごれた; 不快な; 道徳的に堕落した
Meaning
not clean; covered with dirt; unpleasant; morally corrupt
Example
The kitchen was dirty after cooking.
料理後、台所は汚かった。
B1 noun, verb /dɪˈzaɪər/

desire

欲望
Meaning
a strong feeling of wanting something or wishing for something to happen
Example
He has a strong desire to travel the world.
彼は世界を旅行したいという強い欲望を持っています。
B2 adjective /ˈdæz.lɪŋ/

Dazzling

眩しい; 印象的な
Meaning
extremely bright and impressive; brilliant and stunning
Example
The dazzling lights of the city amazed the tourists.
その都市の眩い光は観光客を驚かせました。
C1 noun dɪˌtɪə.ri.əˈreɪ.ʃən

deterioration

劣化
Meaning
The process of becoming progressively worse; decline in quality, condition, or strength.
Example
Poor maintenance leads to material deterioration.
不十分なメンテナンスは材料の劣化を引き起こす。
C2 noun /dɪˈtrækʃən/

detraction

非難
Meaning
The act of belittling or taking away from the value of something.
Example
Her constant detraction of others made her unpopular.
他人に対する彼女の絶え間ない非難は、彼女を不人気にした。
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。
C1 verb /dɪˈpliːt/

deplete

使い果たす
Meaning
to reduce the quantity or supply of something
Example
The long war has depleted the country's resources.
長引く戦争で国の資源は枯渇した。
C1 verb /ˌdɪskənˈsɜːrt/

disconcert

動揺させる
Meaning
To unsettle, confuse, or disturb the composure of someone.
Example
The sudden change of plans disconcerted the team.
突然の計画変更がチームを混乱させた。
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。
B2 verb /dɪsˈkɑːrd/

discard

捨てる
Meaning
to throw away something that is no longer needed
Example
She decided to discard the old clothes.
彼女は古い服を捨てることに決めました。
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。
B2 noun/verb /dɪˈspjuːt/

dispute

争い, 論争
Meaning
a disagreement or argument about something important
Example
The two countries are in dispute over the border issue.
二国間で国境問題について争いが続いています。
B2 noun /dɪˈpləʊ.mə/

diploma

卒業証書
Meaning
an official document showing that a person has completed a course of study or training
Example
She received her diploma after finishing the nursing program.
彼女は看護プログラムを修了した後、卒業証書を受け取りました。
B2 noun /daɪˈmen.ʃənz/

dimensions

次元
Meaning
Aspects or features of a situation, problem, or thing.
Example
New dimensions of space exploration are being uncovered.
宇宙探査の新しい次元が明らかになっています。
B2 noun /ˌdɪs.əˈbɪl.ə.ti/

Disability

障害
Meaning
a physical or mental condition that limits a person's movements, senses, or activities
Example
Despite his physical disability, he became a successful athlete in wheelchair racing.
身体的な障害にもかかわらず、彼は車椅子レースで成功したアスリートになりました。
C1 adjective /dɪˈskriːt/

discrete

離散的
Meaning
individually separate and distinct
Example
The course is divided into three discrete modules.
コースは3つの離散的なモジュールに分けられています。
C2 noun /ˈdʌlərd/

dullard

愚か者
Meaning
a slow or stupid person
Example
He was considered a dullard by his classmates.
彼はクラスメートによって愚か者だと考えられていた。
B1 noun /dɪˈbeɪts/

debates

討論
Meaning
Formal discussions where different viewpoints are presented and argued.
Example
Debates on governance lasted throughout the session.
ガバナンスに関する討論はセッション全体を通して行われました。
C2 verb /ˈdɒɡmətaɪz/

dogmatize

ドグマ化する
Meaning
To state opinions or beliefs as if they were absolute truths.
Example
The professor tended to dogmatize on political issues.
その教授は政治的な問題でドグマタイズする傾向があった。
C2 adjective /ˌdaɪəˈbɒlɪk/

diabolic

悪魔的
Meaning
Extremely evil or cruel; characteristic of the devil.
Example
The villain devised a diabolic scheme.
悪役は悪魔的な計画を立てた。
B2 adjective /ˈdræs.tɪk/

Drastic

劇的な; 厳しい; 強い影響を与える
Meaning
extreme; severe; having a strong or far-reaching effect
Example
The company took drastic measures to reduce costs.
会社はコスト削減のために劇的な措置を取った。
C2 verb /ˌdɪsɪnˈhɛrɪt/

disinherit

遺産を剥奪する
Meaning
to deprive someone, especially a child, of inheritance or right to property
Example
The father threatened to disinherit his son for his reckless actions.
父親は息子の無謀な行動のために遺産を剥奪すると脅した。
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 /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 noun /dɪsˈtrɛs/

distress

苦痛
Meaning
extreme anxiety, sorrow, or pain
Example
He felt a deep sense of distress when he heard the bad news.
悪い知らせを聞いたとき、彼は深い苦痛を感じました。
B2 noun /ˈdiːtʊr/

detour

迂回路
Meaning
A longer or less direct route taken to avoid something or reach a destination.
Example
We had to take a detour because the main road was closed.
メイン道路が閉鎖されていたので、迂回路を取らなければならなかった。
C1 adjective /ˈdɒdʒi/

Dodgy

疑わしい; 質が悪い; 信頼できない; 危険なまたはリスクのある
Meaning
suspicious; questionable; unreliable; risky or dangerous
Example
That deal sounds dodgy to me.
その取引は私には疑わしく聞こえます。
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。
C1 adjective draʊt rɪˈzɪs.tənt

drought-resistant

耐乾燥
Meaning
Able to survive and grow despite limited water availability or drought conditions.
Example
Drought-resistant crops can survive in arid conditions.
耐乾燥作物は乾燥した条件でも生き残ることができます。
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。
B2 noun/verb /dɪˈpɑːzɪt/

deposit

預金, 手付金
Meaning
to place money in a bank account, or a sum paid in advance as security; a layer of material left naturally
Example
She deposited $500 into her savings account.
彼女は貯金口座に500ドルを預けました。
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。
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。
A2 noun /ˈdaʊnˌtaʊn/

downtown

ダウンタウン
Meaning
the central part of a city
Example
They spent the afternoon shopping downtown.
彼らは午後、市の中心部で買い物をしました。
C2 noun /drɒs/

dross

無駄なもの
Meaning
worthless or unwanted material; rubbish or impurities
Example
Most of his early writings were considered dross.
彼の初期のほとんどの作品は無駄なものと見なされていた。
A1 preposition /ˈdjʊərɪŋ/

during

〜の間に
Meaning
throughout the course of a period of time
Example
I fell asleep during the movie.
私は映画の間に寝てしまいました。
A2 noun /ˈdiː.teɪl/

detail

詳細
Meaning
An individual feature, fact, or item of information.
Example
She explained the plan in great detail.
彼女は計画を詳細に説明しました。
C2 adjective /dɪˈfjuːzəbl/

diffusible

拡散可能な
Meaning
able to spread or be spread through a medium
Example
Oxygen is diffusible through cell membranes.
酸素は細胞膜を通じて拡散することができます。
C2 verb /drɔːl/

drawl

だらだらと話す
Meaning
to speak in a slow, lazy way with prolonged vowel sounds
Example
He tends to drawl when he is tired.
彼は疲れているときに、だらだらと話す傾向があります。
B2 verb /dɪsˈtɜːb/

disturb

邪魔する
Meaning
to interrupt or cause someone to stop what they are doing
Example
Please don’t disturb me while I’m studying.
勉強している間に私を邪魔しないでください。
C1 noun /ˌdɪp.ləˈmæt.ɪk ˈmaɪl.stəʊn/

diplomatic milestone

外交上のマイルストーン
Meaning
A significant achievement or important event in diplomatic relations.
Example
Hosting the summit was a diplomatic milestone.
サミットの開催は外交上のマイルストーンでした。
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。
B1 verb /dɪˈklaɪn/

decline

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

denotation

指示
Meaning
The literal or primary meaning of a word, in contrast to the feelings or ideas that the word suggests.
Example
The denotation of the word 'rose' is a type of flower.
'ローズ'という単語のデノテーションは花の一種です。
C1 verb /ˈdiːmɑːrˌkeɪt/

demarcate

境界を定める
Meaning
to set the boundaries or limits of something
Example
The land was demarcated with fences to avoid disputes.
土地はフェンスで境界が定められて、争いを避けました。
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。
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 verb /dɪˈspætʃ/

dispatch

送る
Meaning
to send off to a destination or for a purpose
Example
The company dispatched aid to the flood victims.
その会社は洪水の被害者に援助を発送しました。
B2 adjective /dɪˈvaɪn/

Divine

神聖な; 天上的な; 神のような; 神または神格に関連する
Meaning
heavenly; sacred; godlike; relating to God or a deity
Example
The divine beauty of the sunset took their breath away.
夕日の神聖な美しさは彼らの息を奪いました。
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 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 noun /dɪˌnʌnsiˈeɪʃən/

denunciation

非難 / 公共の告発
Meaning
the public condemnation or accusation of someone or something
Example
The journalist's article was a strong denunciation of corruption.
ジャーナリストの記事は腐敗に対する強い非難でした。
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 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。
B2 verb, noun /dɒn/

don

着る / リーダー
Meaning
to put on (an article of clothing); also used as a title for a respected person
Example
She donned her coat before leaving.
彼女は出かける前にコートを着た。
B2 verb /ˈdɛvəˌsteɪt/

devastate

荒廃させる
Meaning
to cause severe and overwhelming destruction or damage
Example
The hurricane devastated the coastal town.
ハリケーンは沿岸の町を荒廃させた。
B1 verb /dɪˈliːt/

delete

Meaning
to remove or erase something, especially written or recorded information
Example
He accidentally deleted all the files from his computer.
C1 verb /dɔːnt/

daunt

脅す
Meaning
to make someone feel intimidated, discouraged, or less confident
Example
The steep climb did not daunt the experienced hikers.
急な登りは経験豊富なハイカーを怖がらせませんでした。
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。
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。
B2 noun /ˈdɪdʒɪt/

digit

Meaning
a numeral from 0 to 9; also a finger or toe
Example
You must enter a four-digit code to unlock the phone.
A2 adjective /draɪ/

Dry

乾燥した; 湿気や液体がない; 退屈な
Meaning
free from moisture or liquid; not wet; lacking interest or excitement
Example
The desert has very dry climate.
砂漠は非常に乾燥した気候です。
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.
B2 noun /dɪˈdʌk.ʃən/

deduction

推論
Meaning
The process of reaching a conclusion through logical reasoning.
Example
His deduction from the evidence was accurate.
証拠から彼の推論は正確でした。
C1 verb /dɪˈluːd/

delude

だます
Meaning
To mislead someone into believing something that is not true.
Example
He deluded himself into thinking he could win the race without training.
彼は訓練なしでレースに勝てると思い込み、自分をだました。
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。
C2 adjective /ˌdɛməˈnaɪəkəl/

demoniacal

悪魔的な
Meaning
characteristic of or resembling a demon; wildly evil
Example
He gave a demoniacal laugh that terrified everyone.
彼は皆を恐れさせるような悪魔的な笑い声を上げた。
C2 adjective /dɪˈmɒtɪk/

demotic

一般的な言語に関する
Meaning
relating to ordinary people or everyday language
Example
The poet used demotic language to connect with common readers.
詩人は一般の読者とつながるために一般的な言語に関する言葉を使った。
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 noun ˈdɒmɪnəns

dominance

支配
Meaning
Power and influence over others; control or command.
Example
The dominance of Urdu was evident.
ウルドゥ語の支配は明らかだった。
B2 verb /dɪsˈeɪbl/

disable

無効にする
Meaning
to make something unable to function or operate
Example
The technician disabled the alarm system temporarily.
技術者はアラームシステムを一時的に無効にしました。
B1 verb /dɪˈleɪ/

delay

遅延
Meaning
to make something happen later than planned
Example
The flight was delayed due to bad weather.
悪天候のため、飛行機が遅れました。
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 /dɪˈstɛnʃən/

distention

膨張
Meaning
The state of being swollen due to internal pressure.
Example
The patient complained of abdominal pain and distention.
患者は腹痛と膨張感を訴えました。
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。
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。
B2 noun /diːd/

Deed

行為; 偉業; 法的文書;
Meaning
an action that is performed intentionally or consciously; a legal document showing ownership
Example
His heroic deed saved the child from drowning in the river.
彼の英雄的な行為は子供を川で溺れさせないように救った。
C1 adjective /ˈdjuːbiəs/

dubious

疑わしい
Meaning
Hesitating or doubting; not to be relied upon.
Example
She gave him a dubious look after hearing his excuse.
彼女は彼の言い訳を聞いた後、疑わしい目で彼を見ました。
C1 noun dɪˈdʒɛnəˌreɪtɪv dɪˈzizɪz

degenerative diseases

変性疾患
Meaning
Medical conditions that involve the deterioration or progressive decline of tissues, organs, or functions
Example
Degenerative diseases are common in an aging population.
変性疾患は高齢化した人口に一般的です。
C1 noun /ˌdɪs.kʌl.əˈreɪ.ʃən/

discoloration

変色
Meaning
The process of changing or losing color; fading.
Example
Sun exposure causes discoloration of fabrics.
太陽光線は布地の変色を引き起こします。
C2 adjective /dɪˈdjuːsəbl/

deducible

推測可能な
Meaning
able to be deduced; possible to be inferred
Example
The solution is deducible from the data provided.
解決策は提供されたデータから推測可能です。
C1 adjective /dɪˈraɪsɪv/

derisive

軽蔑的な
Meaning
Expressing contempt or ridicule.
Example
She gave a derisive laugh at his attempt to sing.
彼女は彼の歌おうとする試みに対して軽蔑的な笑い声を上げた。
B2 noun /dɪsˈkʌmfərt/

discomfort

不快感
Meaning
A feeling of slight pain, unease, or awkwardness.
Example
She shifted in her chair due to discomfort in her back.
彼女は背中の不快感のために椅子で動きました。
A1 noun /dæd/

dad

お父さん
Meaning
an informal term for father
Example
My dad taught me how to ride a bike.
私のお父さんは自転車の乗り方を教えてくれました。
B2 verb /dɪˈpɪkt/

depict

Meaning
to represent or show something in a picture, story, or other art form
Example
The painting depicts a beautiful sunset over the sea.
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。
A2 noun /dɪˈskʌʃən/

discussion

議論
Meaning
The action or process of talking about something in order to reach a decision or share ideas.
Example
The project needs more discussion before moving forward.
プロジェクトは前進する前にもっと議論が必要です。
C1 noun /dɪˈkɔː.rəm/

Decorum

礼儀; 品位; 威厳
Meaning
behavior in keeping with good taste and propriety; dignified and appropriate conduct
Example
The diplomat maintained perfect decorum throughout the heated negotiations.
その外交官は熱心な交渉の中で完璧な礼儀を保っていました。
B2 noun /dɪsˈɡaɪz/

Disguise

変装; 偽装
Meaning
a means of altering one's appearance to conceal one's identity; something that hides the truth
Example
The spy wore an elaborate disguise to avoid being recognized by enemies.
スパイは敵に認識されないように精巧な変装をしていた。
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。
C1 adjective /ˈdiːviəs/

devious

狡猾な
Meaning
Skillful at using underhanded tactics to achieve goals; not straightforward.
Example
He used a devious plan to gain control of the company.
彼は会社の支配権を握るために、狡猾な計画を使いました。
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 verb /diːˈfrɑːk/

defrock

神父の職を剥奪する
Meaning
to officially remove a priest or minister from their position and authority
Example
The church decided to defrock the priest after the scandal.
教会はスキャンダルの後、神父を職務停止にしました。
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。
B2 verb /dɪˈsɛnd/

descend

Meaning
To move or fall downward; to come or go down from a higher place.
Example
The hikers descended the steep mountain path.
C2 adjective /dɪˈrɪzəbl/

derisible

嘲笑に値する
Meaning
deserving ridicule or mockery
Example
His excuse was so weak that it was plainly derisible.
彼の言い訳は非常に弱く、明らかに嘲笑に値した。
B2 noun /ˌdel.ɪˈɡeɪ.ʃən/

delegation

代表団
Meaning
A group of people chosen to represent others in negotiations or discussions.
Example
The delegation presented their country's agenda.
代表団は自国の議題を提示しました。
B1 adjective /ˈdɪstənt/

Distant

遠い
Meaning
far away in space or time; remote
Example
We could see a distant mountain on the horizon.
私たちは地平線に遠くの山を見ることができました。
B2 adjective /ˌdɪsədˈvæntɪdʒd/

disadvantaged

恵まれない
Meaning
Lacking the basic resources or conditions needed for a good standard of living or equal opportunities.
Example
The program provides support to disadvantaged children.
そのプログラムは恵まれない子供たちに支援を提供しています。
B2 verb dɪˈtɪəriəreɪt

deteriorate

悪化する
Meaning
To become progressively worse in quality, condition, or performance; to decline.
Example
Unplanned growth can deteriorate living conditions.
計画外の成長は生活環境を悪化させる可能性があります。
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。
A2 noun /ˈdɪkʃəˌnɛri/

dictionary

辞書
Meaning
A reference book or electronic resource containing words, usually arranged alphabetically, with information about their meanings, pronunciations, etymologies, and usage.
Example
I looked up the word in the dictionary to understand its meaning.
意味を理解するために辞書でその単語を調べました。
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。
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。
B1 verb /dɪˈspleɪ/

display

表示する
Meaning
to show or exhibit; to present for others to see
Example
The museum displays ancient artifacts.
博物館は古代の遺物を表示しています。
B2 noun /doʊs/

dose

用量
Meaning
a measured amount of a medicine or drug taken at one time
Example
The doctor prescribed one dose of the medicine every six hours.
医者は6時間ごとに1回薬のドーズを処方しました。
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。
B1 noun /ˈdɛkeɪd/

decade

十年
Meaning
A period of ten years.
Example
The country has changed a lot in the past decade.
その国は過去10年間で大きく変わりました。
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 /dɪˈfaɪəns/

defiance

反抗
Meaning
Open resistance or bold disobedience.
Example
The protest was an act of defiance against injustice.
その抗議は不正に対する反抗の行為でした。
C1 verb /dɪsˈlɒdʒ/

dislodge

追い出す
Meaning
To remove or force out from a position, especially one that is fixed or hard to move.
Example
The troops dislodged the enemy from the hill.
部隊は敵を丘から追い出した。
C1 noun dɪˈskrep.ən.siz

discrepancies

不一致
Meaning
Differences between things that should be the same
Example
Discrepancies in regulations delay progress.
規則の不一致が進行を遅らせている。
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 verb /ˈdaʊn.pleɪ/

downplay

軽視する
Meaning
to make something seem less important than it really is
Example
The company tried to downplay the risks of the new product.
会社は新しい製品のリスクを軽視しようとしました。
C1 noun /doʊ/

doe

雌鹿
Meaning
a female deer, especially an adult one
Example
The doe and her fawn were grazing in the meadow.
雌鹿とその子鹿は草原で草を食べていました。
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。
B2 noun /ˈdʌbəl ˈdekər/

Double decker

二階建てバス
Meaning
a bus with two levels or floors for passengers
Example
The red double decker bus is a famous symbol of London.
赤いダブルデッカーバスはロンドンの有名なシンボルです。
B2 noun /dɪˌskrɪm.ɪˈneɪ.ʃən/

Discrimination

差別; 不公平な扱い; 偏見
Meaning
the unjust or prejudicial treatment of different categories of people; recognition of difference
Example
The company was sued for racial discrimination in their hiring practices.
その企業は採用における人種差別で訴えられました。
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。