demeanor
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C1 noun /dɪˈmiːnər/

demeanor

態度
Meaning
a person's outward behavior or appearance
Example
Her calm demeanor impressed everyone at the meeting.
彼女の冷静な態度は会議で皆に感銘を与えました。
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。
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 /ˈdel.ɪ.ɡət/

Delegate

代表
Meaning
a person chosen or elected to act for or represent others; representative
Example
Each country sent a delegate to participate in the international conference.
各国は国際会議に参加するために代表を派遣しました。
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。
C1 verb /dɪˈmɔrəˌlaɪz/

demoralize

Meaning
to cause someone to lose confidence or hope
Example
The constant criticism demoralized the young athlete.
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。
B1 adjective /dɪˈlaɪtɪd/

delighted

喜んで
Meaning
feeling or showing great pleasure and happiness
Example
She was delighted with the surprise gift.
彼女はサプライズギフトにとても喜んでいました。
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。
B2 noun /ˌdɪsəˈpruːvəl/

disapproval

不賛成
Meaning
The expression of an unfavorable opinion or judgment
Example
Her parents showed clear disapproval of her decision to drop out of college.
彼女の両親は、大学を中退するという彼女の決定に明確な不賛成を示した。
C2 verb /ˌdɪsɪnˈtɜːr/

disinter

掘り出す
Meaning
to dig up something buried, especially a body
Example
The archaeologists disinterred ancient remains from the site.
考古学者たちはそのサイトから古代の遺骸を掘り出しました。
B1 adjective /dɪˈmændɪŋ/

demanding

要求が厳しい
Meaning
requiring much effort, skill, or attention; difficult to satisfy
Example
The job is very demanding and requires long hours of work.
その仕事は非常に要求が厳しく、長時間の労働が必要です。
C2 noun /ˈdaɪˌsɪləbəl/

disyllable

二音節語
Meaning
a word consisting of two syllables
Example
The word 'happy' is a disyllable.
‘ハッピー’という単語は二音節語です。
B2 adjective daɪˈdʒes.tɪv

digestive

消化の
Meaning
Relating to the digestion of food.
Example
Digestive enzymes help break down food.
消化酵素は食べ物を分解するのを助けます。
B2 noun /dɪˈfɛndər/

defender

ディフェンダー
Meaning
a person who protects someone or something from harm or attack
Example
The defender blocked the shot and saved the goal.
ディフェンダーはシュートをブロックし、ゴールを守った。
C1 verb /dɪˈsɛləˌreɪt/

decelerate

減速する
Meaning
to reduce speed; to slow down
Example
The car began to decelerate as it approached the traffic light.
車は信号に近づくと減速し始めました。
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。
C1 verb /ˌdɪsɪnˈtæŋɡl/

disentangle

ほどく
Meaning
To free something or someone from a tangle or complication.
Example
She tried to disentangle her hair from the branches.
彼女は枝から髪の毛をほどこうとしました。
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 adjective /ˌdɪsɪnˈdʒɛnjʊəs/

disingenuous

不誠実な
Meaning
not candid or sincere; giving a false appearance of honesty or openness
Example
She gave a disingenuous excuse for missing the meeting.
彼女は会議に出席しないために不誠実な言い訳をしました。
B2 noun /ˈdrɔː.bæk/

Drawback

欠点; 不利な点; 問題
Meaning
a feature that renders something less acceptable; a disadvantage or problem
Example
The main drawback of living in the city is the high cost of housing.
都市での生活の主な欠点は高い住宅費です。
B2 noun /ˈdreɪ.nɪdʒ/

drainage

排水
Meaning
the system or process by which water or other liquids are drained away
Example
Poor drainage caused flooding in the neighborhood.
悪い排水システムが近所での洪水を引き起こしました。
C1 noun /ˈdaɪhɑːrd/

diehard

Meaning
A person who strongly resists change and remains loyal to a belief or cause.
Example
He is a diehard fan of classic rock music.
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 /diːˈkrɪp.ʃən/

decryption

復号
Meaning
The process of converting encrypted data back into its original form so it can be understood.
Example
Hackers attempted decryption of classified data.
ハッカーは分類されたデータの復号を試みました。
B2 adjective /dɪˈzɜːrtɪd/

deserted

人がいない
Meaning
Empty of people; abandoned.
Example
The village looked completely deserted after the storm.
嵐の後、その村は完全に人がいないように見えた。
C2 noun /ˌdɪfəˈrɛnʃə/

differentia

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

delusory

幻想的な
Meaning
Based on illusion; not real.
Example
He was filled with delusory hopes of becoming famous overnight.
彼は一夜にして有名になるという幻想的な希望に満ちていた。
C1 noun /ˌdɪs.ɪˈluː.ʒən.mənt/

disillusionment

幻滅
Meaning
A feeling of disappointment resulting from the discovery that something is not as good as one believed it to be.
Example
Many people experience disillusionment after unrealistic expectations.
多くの人々が非現実的な期待の後に幻滅を経験します。
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。
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。
B1 verb /dɪˈfaɪn/

define

定義する
Meaning
to explain the meaning of a word, phrase, or concept clearly
Example
The teacher asked the student to define the word 'democracy'.
先生は生徒に『民主主義』という言葉を定義するように頼んだ。
C1 adjective /dɪˈfɛnsəbəl/

defensible

守ることができる / 正当化できる
Meaning
Capable of being protected against attack or criticism; justifiable.
Example
Her decision was legally defensible.
彼女の決定は法的に守ることができた。
B1 adjective dəˈmes.tɪk

domestic

国内の
Meaning
Existing or occurring inside a particular country; not foreign or international.
Example
Domestic investments stabilize the economy.
国内投資は経済を安定させる。
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 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。
B2 noun /ˈdɔːr.mæt/

Door-mat

ドアマット
Meaning
a mat placed in front of a door for wiping feet
Example
Please wipe your feet on the door-mat before entering the house.
家に入る前にドアマットで足を拭いてください。
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。
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。
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 noun /ˌdaɪəɡˈnoʊsɪs/

diagnosis

Meaning
The identification of a disease, condition, or problem through examination of symptoms.
Example
The diagnosis confirmed that she had diabetes.
C2 noun /ˈdrʌmɪt/

Drumet

ドラメット
Meaning
a small drum used in military or marching bands
Example
The drummer played a steady beat on the drumet during the parade.
ドラマーはパレード中にドゥルメットで一定のリズムを演奏しました。
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。
B2 adjective /ˈdred.fəl/

Dreadful

恐ろしい; 恐怖を引き起こす; 恐ろしい
Meaning
extremely bad or unpleasant; causing fear or suffering; terrible
Example
The weather was dreadful during our vacation.
私たちの休暇中、天気は恐ろしかった。
C2 verb /dɪsˈbɜːrdən/

disburden

負担を軽減する
Meaning
to relieve someone of a burden or load
Example
She disburdened herself of worries by sharing them with her friend.
彼女は心配を友達と共有することで自分を負担から解放した。
B2 noun /ˈdʌklɪŋ/

duckling

Meaning
a young duck
Example
The mother duck led her ducklings to the pond.
C2 adjective /ˈdæpəld/

dappled

斑点模様
Meaning
Marked with spots or patches of light and shade or different colors.
Example
The forest floor was dappled with sunlight.
森の地面は日光で斑点模様ができていた。
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。
C1 noun /ˈdræm.ə.tɪst/

dramatist

劇作家
Meaning
a person who writes plays
Example
Shakespeare is one of the greatest dramatists in history.
シェイクスピアは歴史上最も偉大な劇作家の一人です。
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 verb /dɪsˈpærɪdʒ/

disparage

Meaning
to criticize someone or something in a way that shows a lack of respect
Example
It is unfair to disparage people for their opinions.
C2 verb /ˌdɪskəˈmoʊd/

discommode

邪魔する
Meaning
To cause inconvenience or trouble to someone.
Example
I hope my request does not discommode you.
私のリクエストがあなたに不便をかけないことを願っています。
B2 noun /ˈder.ɪŋ/

Daring

大胆; 危険を冒す意欲
Meaning
adventurous courage; willingness to take risks
Example
The mountain climber's daring impressed everyone at the base camp.
山登りの冒険心は、ベースキャンプの皆に感動を与えました。
B2 verb /ˈdɑːrkən/

darken

暗くする
Meaning
to make or become dark; to reduce brightness or light
Example
The clouds began to darken the sky before the storm.
嵐の前に雲が空を暗くし始めた。
B2 noun /ˈdræɡ.ən.flaɪ/

Dragon-fly

トンボ
Meaning
a large insect with four transparent wings that lives near water
Example
The dragonfly hovered over the pond.
トンボは池の上を飛んでいた。
C2 noun /ˈdɛkəˌpɒd/

decapod

十脚目
Meaning
An arthropod with ten limbs, such as crabs, lobsters, and shrimps.
Example
The lobster is a well-known decapod.
ロブスターは有名な十脚目です。
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。
B1 verb /dræɡ/

drag

引きずる
Meaning
to pull something heavy or difficult to move along the ground; to go somewhere unwillingly; to last too long
Example
She had to drag the heavy suitcase up the stairs.
彼女は重いスーツケースを階段で引きずらなければならなかった。
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。
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。
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 /ˈdrʌdʒəri/

drudgery

退屈で骨の折れる仕事
Meaning
Hard, menial, or dull work.
Example
She wanted to escape the drudgery of her daily routine.
彼女は日常の退屈なルーチンから抜け出したかった。
C1 verb /dɪsˈsætɪsfaɪ/

dissatisfy

不満にさせる
Meaning
to fail to please or meet expectations; to make someone unhappy
Example
The poor service dissatisfies many customers.
悪いサービスは多くの顧客を不満にさせます。
C1 verb /dɪˈtrækt/

detract

Meaning
To reduce or take away the worth or value of something.
Example
His rude behavior will detract from his good reputation.
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 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。
C2 noun /dɪnt/

dint

努力、衝撃の跡
Meaning
an impression or hollow made by a blow; force or power
Example
By dint of hard work, he achieved success.
努力のおかげで、彼は成功を収めました。
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。
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。
B2 adjective /ˈdjʊərəbəl/

Durable

耐久性がある; 強い; 頑丈な
Meaning
able to withstand wear, pressure, or damage; lasting; strong
Example
This durable fabric will last for many years.
この耐久性のある生地は何年も持ちます。
C1 noun /djuːn/

dune

砂丘
Meaning
A hill or ridge of sand formed by the wind, usually found in deserts or near beaches.
Example
The children played on the sand dune by the beach.
子供たちはビーチの砂丘で遊んでいました。
A2 noun /ˈdɪfɪkəlti/

difficulty

Meaning
the state or condition of being hard to do, deal with, or understand
Example
He faced great difficulty in learning a new language.
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 /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。
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。
B2 adjective dɪˈlɪbəreɪt

deliberate

意図的に行われた
Meaning
Done consciously and intentionally; carefully considered.
Example
His deliberate actions showed great care and thoughtfulness.
彼の意図的な行動は、大きな配慮と熟慮を示しました。
C1 adjective /ˈdæʃ.ɪŋ/

Dashing

魅力的; スタイリッシュ; 自信に満ちた;
Meaning
stylish and confident; lively and energetic; attractive and charming
Example
He looked dashing in his new suit.
彼は新しいスーツで魅力的に見えました。
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。
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。
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。
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。
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。
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 verb /dɪˈbɔːtʃ/

debauch

堕落させる
Meaning
to corrupt morally; to lead into excessive indulgence in sensual pleasures
Example
The novel shows how wealth can debauch a person's character.
その小説は、どのように富が人の性格を堕落させるかを示しています。
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。
B2 noun /ˈdjuːəʊ/

duo

デュオ
Meaning
a pair of people or things, especially in music or entertainment
Example
The musical duo performed their latest hit at the concert.
その音楽デュオはコンサートで最新のヒットを演奏しました。
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。
C1 verb /dɪˈmoʊt/

demote

降格
Meaning
to reduce to a lower rank or position
Example
The manager decided to demote the employee for poor performance.
マネージャーはパフォーマンスが悪いため、従業員を降格させることに決めました。
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 adjective /dɪˈsɛnʃənt/

dissentient

反対意見を持つ人
Meaning
Expressing or holding opinions that are opposed to the majority or official view.
Example
Only a few dissentient voices were heard during the debate.
討論中に反対意見を持つ少数の声だけが聞こえました。
C2 noun /dɪˈkæmɪtər/

decameter

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

dun

借金を取り立てる
Meaning
to demand payment of a debt persistently
Example
The landlord dunned the tenant for unpaid rent.
家主は未払いの家賃のためにテナントに何度も支払いを求めました。
B2 verb /dɒdʒ/

dodge

避ける
Meaning
to move quickly to one side to avoid something; to avoid dealing with something cleverly or dishonestly
Example
The boxer managed to dodge his opponent's punch.
ボクサーは相手のパンチをかわすことに成功した。
C1 noun ˌdjʊə.rəˈbɪl.ə.ti

durability

耐久性
Meaning
The ability to withstand wear, pressure, or damage; hard-wearing.
Example
The durability of materials affects performance.
素材の耐久性はパフォーマンスに影響を与えます。
C1 verb /ˌdɪsɪnˈɡeɪdʒ/

disengage

解放する
Meaning
To release or detach oneself from something; to withdraw.
Example
He tried to disengage from the heated argument.
彼は熱い議論から解放しようとした。
B2 adjective /dɪˈsaɪsɪv/

decisive

決定的
Meaning
Having the ability to make decisions quickly and effectively; determining the outcome.
Example
Her decisive action saved the company from collapse.
彼女の決定的な行動が会社を崩壊から救った。
C2 adjective /ˈdəʊ.lə.rəs/

dolorous

Meaning
Expressing great sorrow or distress.
Example
He spoke in a dolorous tone after the loss.
C1 adjective /dɪˈmɒnstrətɪv/

demonstrative

表現的な
Meaning
openly showing feelings, especially affection or emotion
Example
She was very demonstrative with her affection towards her friends.
彼女は友達に対してとても表現的だった。
C2 adjective /dɪˈlɛktəbl̩/

delectable

美味しい
Meaning
delicious or highly enjoyable
Example
The restaurant served a delectable meal.
レストランは美味しい料理を提供しました。
C1 noun /ˈdɪŋɡi/

dinghy

ディンギーボート
Meaning
a small boat, often carried or towed by a larger vessel, used for short trips or as a lifeboat
Example
They rowed the dinghy back to the yacht.
彼らはヨットに戻るためにディンギーを漕いだ。
B1 adjective ˌdem.əˈkræt.ɪk

democratic

民主的
Meaning
Relating to or supporting democracy or its principles.
Example
Democratic governance ensures equal rights.
民主的な統治は平等な権利を保証します。
B2 adjective /ˈdæmɪdʒɪŋ/

damaging

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

depress

落ち込ませる
Meaning
To make someone feel sad or without hope; to reduce the level or strength of something.
Example
The gloomy weather tends to depress people.
陰鬱な天気は人々を落ち込ませる傾向がある。
B2 adjective /dɪˈskriːt/

discreet

慎重な
Meaning
careful and prudent in one's speech or actions, especially to keep something confidential or avoid embarrassment
Example
She was discreet about the details of their conversation.
彼女は彼らの会話の詳細について慎重でした。
B1 noun /ˌdɪsəˈpɔɪntmənt/

disappointment

失望
Meaning
the feeling of sadness or displeasure caused by the non-fulfillment of one's hopes or expectations
Example
Her face showed deep disappointment after hearing the results.
結果を聞いた後、彼女の顔には深い失望が表れていた。
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。
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 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。
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.
C1 noun /ˌdez.ɪɡˈneɪ.ʃən/

Designation

任命; 役職; 職位; ステータス
Meaning
the action of choosing someone for a position; a name, title, or official status
Example
His designation as team leader came with additional responsibilities and authority.
チームリーダーとしての彼の任命は、追加の責任と権限を伴っていました。
C1 adjective /drəˈkoʊniən/

draconian

ドラコニアン
Meaning
Extremely harsh and severe, especially laws or rules.
Example
The new regulations were criticized as draconian.
新しい規制はドラコニアンだと批判されました。
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 adjective /ˌdaɪəˈtɒmɪk/

diatomic

二原子
Meaning
Consisting of two atoms.
Example
Oxygen is a diatomic molecule.
酸素は二原子分子です。
A2 noun /dɪˈpɑːrtmənt/

department

部門
Meaning
a division of a large organization such as a government, university, or company
Example
She works in the marketing department.
彼女はマーケティング部門で働いています。
C1 verb /ˈdɪsləkeɪt/

dislocate

脱臼する
Meaning
To disturb the normal position of something, especially a joint in the body.
Example
He dislocated his shoulder while playing football.
彼はサッカーをしているときに肩を脱臼しました。
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。
C2 adjective /dɪˈmoʊniˌæk/

demoniac

悪魔的な
Meaning
possessed, produced, or influenced by a demon; frenzied or violent
Example
The soldiers fought with demoniac fury.
兵士たちは悪魔的な怒りで戦った。
C2 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。
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.
B1 verb /dɪˈlɪvər/

deliver

届ける
Meaning
to bring or hand over something to the intended recipient
Example
The courier will deliver the package tomorrow.
宅配便は明日荷物を届けます。
C2 adjective /ˌdɛfəˈrɛnʃəl/

deferential

尊敬の念を示す
Meaning
Showing or expressing respect and high regard.
Example
He was always deferential toward his teachers.
彼はいつも教師に対して尊敬の念を示していた。