B2 adjective /ˌʌnkənˈvɛnʃənl/

unconventional

型破りの

Meaning

not based on or conforming to what is generally done or believed

Example

Her unconventional approach to teaching inspired her students to think creatively.

彼女の型破りの教育アプローチは、生徒たちに創造的に考えるよう促しました。

B2 adjective /ʌnˈtʃeɪndʒɪŋ/

unchanging

変わらない

Meaning

remaining the same over time; not changing

Example

Her love for her family was unchanging throughout the years.

彼女の家族への愛は何年にもわたって変わらなかった。

C2 adjective /ʌnəˈpiːzd/

unappeased

満足していない

Meaning

Not satisfied or calmed; still feeling discontent or anger

Example

Despite the apology, she remained unappeased.

謝罪にもかかわらず、彼女は満足していなかった。

B2 adjective /ʌnˈwaɪz/

unwise

賢明でない

Meaning

Showing poor judgment; not sensible or prudent.

Example

It would be unwise to invest all your money in one company.

すべてのお金を1つの会社に投資するのは賢明でないことです。

B2 adjective /ˌʌnəˈveɪləbəl/

unavailable

利用できない

Meaning

Not able to be obtained, reached, or used; not present or accessible.

Example

The manager was unavailable to take calls during the meeting.

マネージャーは会議中に電話に出られませんでした。

A1 noun /ˌjuːnɪˈvɜːrsɪti/

university

大学

Meaning

an institution of higher education and research, which grants academic degrees

Example

She is studying law at the university.

彼女は大学で法学を学んでいます。

B2 noun /ʌnəˈbɪləti/

unability

無能力

Meaning

the state of being unable to do something; incapacity

Example

His unability to solve the problem caused delays in the project.

彼の問題を解決する無能力はプロジェクトの遅延を引き起こした。

C2 noun /ˈʌn.dɚˌstɔː.ri/

understory

下層植物

Meaning

The layer of vegetation beneath the main canopy of a forest.

Example

The understory of a rainforest is home to small mammals and insects.

熱帯雨林の下層植物は小さな哺乳動物や昆虫の家です。

C2 adjective /ˌʌn.rɪˈdʒɛn.ər.ət/

unregenerate

頑固

Meaning

Not reformed or showing no signs of change; stubbornly refusing to reform or repent.

Example

He remained an unregenerate opponent of progress.

彼は進歩の頑固な反対者であり続けた。

C2 noun /ˈjuːzjuːfrʌkt/

usufruct

使用権

Meaning

The legal right to use and enjoy the benefits of someone else’s property without owning it.

Example

The tenant had the usufruct of the land but not its ownership.

借家人は土地の使用権を持っていたが、所有権はなかった。

B1 adjective /ʌnˈedjʊkeɪtɪd/

Uneducated

未教育; 教育を受けていない

Meaning

lacking education; not having received formal schooling or training

Example

Many uneducated workers struggle to find well-paying jobs.

多くの未教育の労働者は、良い給料の仕事を見つけるのに苦労しています。

B2 adjective /juːˈnæn.ɪ.məs/

Unanimous

全会一致

Meaning

fully in agreement; shared by all

Example

The committee reached a unanimous decision.

委員会は全会一致の決定を下しました。

C1 adjective /ˌʌnrɪˈkwaɪtɪd/

unrequited

Meaning

Not returned or reciprocated, especially in the context of love or affection.

Example

He suffered from unrequited love for years.

B2 adjective /ʌnˈwɪl.ɪŋ/

Unwilling

嫌がる; したくない;

Meaning

not ready to do something; reluctant; not wanting to do

Example

He was unwilling to share his secret with anyone.

彼は誰にも自分の秘密を共有することを望まなかった。

A1 noun /ˈʌŋkəl/

uncle

おじ/おじさん

Meaning

the brother of one's father or mother

Example

My uncle is visiting us next week.

私のおじさんは来週私たちを訪ねてきます。

C1 adjective /ʌnˈsteɪtɪd/

unstated

未表明

Meaning

not expressed directly in words; implied or left unsaid

Example

The contract included several unstated expectations.

契約にはいくつかの未表明の期待が含まれていました。

C2 verb /ʌnˈjoʊk/

unyoke

束縛から解放する

Meaning

To release from a yoke or to free from restraint or obligation.

Example

The farmer unyoked the oxen after a long day of work.

農夫は長い労働の後に牛の首輪を外した。

B1 adjective /ʌnˈplɛz.ənt/

Unpleasant

不快な

Meaning

not giving or causing pleasure; disagreeable

Example

The medicine had an unpleasant taste.

その薬は不快な味がしました。

B2 adjective /ˌʌn.kəʊˈɒp.ər.ə.tɪv/

uncooperative

非協力的な

Meaning

not willing to help or work with others; unhelpful

Example

The witness was uncooperative and refused to answer questions.

証人は非協力的で、質問に答えることを拒否した。

B2 noun ˈjuːnəti

unity

団結

Meaning

The state of being united or joined as a whole.

Example

Unity among people led to victory.

人々の団結が勝利をもたらした。

C2 adjective /ʌnˈflæpəbəl/

unflappable

冷静沈着

Meaning

calm and composed, especially in difficult situations

Example

Despite the crisis, he remained unflappable and confident.

危機にもかかわらず、彼は冷静沈着で自信に満ちていた。

B2 adjective ʌnˈprɛsɪˌdɛntɪd

unprecedented

前例のない

Meaning

Never done or known before; without previous example.

Example

Unprecedented advancements in science changed human lives.

科学における前例のない進歩は人間の生活を変えました。

C1 adjective /ʌnˈfɔːltərɪŋ/

unfaltering

不屈不挠

Meaning

Steady and resolute; not weakening or hesitating

Example

She continued with unfaltering determination.

彼女は不屈不挠の決意で続けた。

C2 adjective /ʌnˈælɔɪd/

unalloyed

純粋

Meaning

Pure, complete, and not mixed with anything else.

Example

She felt unalloyed joy at the news of her success.

彼女は成功のニュースを聞いて純粋な喜びを感じた。

B2 verb /ʌpˈhoʊld/

uphold

維持する

Meaning

to maintain or support a principle, law, or decision

Example

The judge promised to uphold justice at all costs.

裁判官は、どんな犠牲を払っても正義を守ると約束しました。

B2 adjective /ˈʌl.tɪ.mət/

Ultimate

究極; 最後; 最高の

Meaning

being the best or most extreme example of its kind; final; last

Example

This is the ultimate test of your skills.

これがあなたのスキルの究極のテストです。

C2 verb /ˈʌndərˌraɪt/

underwrite

Meaning

To guarantee financial support, especially by agreeing to cover losses or risks; in insurance, to assess and accept risks.

Example

The bank agreed to underwrite the company's new bond issue.

C2 adjective ˌʌn.əˈseɪ.lə.bəl

unassailable

打破できない

Meaning

Unable to be attacked, questioned, or defeated.

Example

An unassailable position ensures dominance.

打破できない位置は支配を確保します。

B1 adjective /ʌnˈnesəseri/

Unnecessary

不必要な; 無駄な

Meaning

not needed; not required; pointless

Example

The meeting was unnecessary since all decisions were already made.

その会議は必要ありませんでした、すべての決定はすでに下されていました。

C1 adjective /ˌʌnəbˈtruːsɪv/

unobtrusive

目立たない

Meaning

not attracting attention; blending in without causing notice

Example

The security cameras are designed to be unobtrusive.

セキュリティカメラは目立たないように設計されています。

A1 verb /ˌʌndərˈstænd/

understand

理解する

Meaning

to know the meaning of something; to comprehend

Example

Do you understand the instructions?

指示が理解できますか?

B1 adjective /ʌnˈfrɛndli/

unfriendly

不親切な

Meaning

not kind or welcoming; hostile or cold in behavior or attitude

Example

The shop owner seemed unfriendly to new customers.

店のオーナーは新しい客に不親切なようだった。

B2 adverb /ʌnˈplɛzəntli/

unpleasantly

不快に

Meaning

in a way that causes discomfort, annoyance, or displeasure; in an unfriendly or disagreeable manner

Example

The room was unpleasantly hot during the afternoon.

午後、その部屋は不快に暑かった。

C2 adjective /ˌʌnprəˈpɪʃəs/

unpropitious

不運な

Meaning

Not giving or indicating a good chance of success; unfavorable.

Example

The team began their journey under unpropitious weather conditions.

チームは不運な天候の中で旅を始めました。

C1 adjective /ˌʌnəˈteɪnəbl/

unattainable

達成不可能な

Meaning

impossible to achieve, reach, or accomplish

Example

For many, becoming a professional athlete remains an unattainable dream.

多くの人にとって、プロのアスリートになることは依然として達成不可能な夢です。

C1 adjective /ˌʌnfɔːrθˈkʌmɪŋ/

unforthcoming

協力的でない

Meaning

Not willing to talk or provide information; uncooperative.

Example

The witness was unforthcoming about what he had seen.

証人は見たことについて協力的でなかった。

C1 adjective ʌnˈjiːl.dɪŋ

unyielding

揺るぎないまたは堅い

Meaning

Not easily broken or giving in to pressure.

Example

Her unyielding determination helped her overcome all challenges.

彼女の揺るぎない決意が彼女をすべての挑戦を乗り越えさせました。

C1 noun /juːˈtoʊpiə/

utopia

ユートピア

Meaning

An imagined perfect society or place where everything is ideal.

Example

Many philosophers dreamed of creating a utopia for humanity.

多くの哲学者は人類のためにユートピアを作る夢を見ていました。

B2 adjective /ʌnˈriːzənəbəl/

unreasonable

理不尽な

Meaning

not guided by reason or fairness; excessive or extreme beyond what is acceptable

Example

The manager made an unreasonable demand that no one could realistically meet.

マネージャーは理不尽な要求をした。

B1 adjective /ʌnˈjuː.ʒu.əl/

Unusual

異常な; 奇妙な;

Meaning

not typical; strange; different from what is normal

Example

She wore an unusual dress to the party.

彼女はパーティーに異常なドレスを着ていた。

C1 adjective /ˌʌnəˈkaʊntəbl/

unaccountable

説明できない

Meaning

Not able to be explained or justified.

Example

She felt an unaccountable fear as she entered the dark room.

彼女は暗い部屋に入ると説明できない恐怖を感じた。

C1 adjective /ʌlˈtɪəriər/

ulterior

隠された動機

Meaning

hidden or secret, often with a selfish motive

Example

He invited her with an ulterior motive.

彼は隠された動機で彼女を招待した。

B2 adjective /ˌʌndɪˈstɜːrbd/

Undisturbed

邪魔されない

Meaning

not interrupted or interfered with; calm and peaceful

Example

She slept undisturbed for eight hours.

彼女は8時間、邪魔されずに眠った。

B1 adjective /ʌnˈwɒn.tɪd/

Unwanted

望まれない

Meaning

not desired or welcome; not wanted

Example

He felt like an unwanted guest at the meeting.

彼は会議で望まれない客のように感じた。

C2 verb /ʌpˈbreɪd/

upbraid

叱る

Meaning

To scold or criticize someone harshly.

Example

The teacher upbraided the student for being late again.

教師は学生がまた遅刻したことを叱りました。

C1 adjective /ˌʌnˈpɑr.də.nə.bəl/

Unpardonable

許されざる

Meaning

too bad to be forgiven; inexcusable

Example

His betrayal of trust was an unpardonable offense.

彼の裏切りは許されざる犯罪でした。

A2 noun /ˈjuːnɪt/

unit

ユニット

Meaning

an individual thing or person regarded as a single and complete entity

Example

Each unit in the production line is carefully tested.

生産ラインの各ユニットは慎重にテストされます。

B1 verb /juˈnaɪt/

unite

団結する

Meaning

to join together or combine; to bring people or things together

Example

The crisis helped unite the community.

危機はコミュニティを団結させる手助けをした。

B1 verb /ʌnˈlɒk/

unlock

解錠する

Meaning

to open something that is locked; to make something accessible or available

Example

She used the key to unlock the door.

彼女は鍵を使ってドアを解錠した。

C2 noun /ˈʌŋɡwənt/

unguent

軟膏

Meaning

A soothing or healing ointment applied to the skin.

Example

The doctor applied an unguent to heal the burn.

医者は火傷を治すために軟膏を塗った。

B1 verb /ʌnˈræp/

unwrap

包みを開ける

Meaning

remove wrapping or covering from something; reveal something gradually or clearly

Example

She carefully unwrapped the gift with excitement.

彼女は興奮しながら慎重に贈り物の包みを開けた。

C1 adjective /ˌʌnəˈdɔːrnd/

unadorned

シンプルな、飾りのない

Meaning

Plain and simple; not decorated.

Example

The room was unadorned, with only a table and a chair.

部屋はシンプルで、テーブルと椅子だけがありました。

B2 adjective /ʌnˈbæləns/

Unbalanced

不均衡な; 不安定な

Meaning

not balanced; lacking stability or equilibrium; mentally unstable

Example

The unbalanced table kept wobbling.

不均衡なテーブルは揺れ続けていた。

C2 adjective /ˌʌnɪmˈpiːtʃəbl/

unimpeachable

非難の余地がない

Meaning

Not able to be doubted, questioned, or criticized; completely trustworthy.

Example

She is known for her unimpeachable honesty.

彼女はその非難の余地がない誠実さで知られています。

B2 adjective /ʌnprɪˈpɛrd/

Unprepared

準備不足

Meaning

not ready or able to deal with something

Example

He was unprepared for the difficult exam.

彼は難しい試験に準備していなかった。

B1 adjective /ˌʌnˈɪntrəstɪŋ/

uninteresting

つまらない

Meaning

not holding attention or curiosity; boring

Example

The lecture was uninteresting and difficult to stay focused on.

その講義はつまらなく、集中するのが難しかった。

C1 noun /ʌnkənˈsɜːrn/

Unconcern

無関心

Meaning

lack of worry or interest; indifference

Example

She showed complete unconcern about the criticism.

彼女は批評に対して完全に無関心を示しました。

C1 noun /ˈʌndərˌwɜːrld/

underworld

アンダーワールド

Meaning

The criminal world of organized crime or the mythical world of the dead.

Example

The detective spent years studying the secrets of the underworld.

探偵はアンダーワールドの秘密を何年も研究していました。

C2 adjective /ˌʌnrɪˈmɪtɪŋ/

unremitting

絶え間ない

Meaning

Never relaxing or stopping; persistent.

Example

Her unremitting efforts finally paid off.

彼女の絶え間ない努力は最終的に報われた。

C2 adjective /ɜːrˈbeɪn/

urbane

洗練された

Meaning

showing polished manners, refinement, and sophistication

Example

He was an urbane gentleman who charmed everyone at the party.

彼はパーティーでみんなを魅了した洗練された紳士だった。

C1 adjective /ʌnˈspiːkəbl/

unspeakable

言葉では表現できない

Meaning

too bad or shocking to be expressed in words

Example

The survivors endured unspeakable horrors during the war.

生存者は戦争中に言葉では表現できない恐怖に耐えました。

C1 noun /ˈʌlsər/

ulcer

Meaning

a sore on the skin or a mucous membrane that does not heal easily

Example

The doctor prescribed medicine to treat the stomach ulcer.

B2 verb /ˌʌndərˈskɔːr/

underscore

強調する

Meaning

to emphasize or highlight something

Example

The incident underscored the need for better safety measures.

その出来事は、安全対策の重要性を強調しました。

C1 noun /ˌʌnprɪˈdɪktəˌbɪləti/

unpredictability

予測不可能性

Meaning

The quality of being impossible to predict or anticipate.

Example

The unpredictability of the weather made the trip uncertain.

天気の予測不可能性は旅行を不確実にした。

C1 noun /ˌʌnbɪˈliːf/

Unbelief

不信

Meaning

lack of religious belief; skepticism or doubt

Example

His unbelief in the supernatural made him a skeptic.

超自然に対する彼の不信は彼を懐疑的にしました。

A2 adjective /ˈjuːs.ləs/

Useless

無駄

Meaning

having no beneficial purpose; not useful

Example

This broken computer is completely useless.

この壊れたコンピュータは完全に役に立たない。

A2 noun /ˈjuːzər/

user

ユーザー

Meaning

a person who uses or operates something

Example

He is a frequent user of this app.

彼はこのアプリの頻繁なユーザーです。

B1 verb /ˈʌpˌɡreɪd/

upgrade

アップグレード

Meaning

to raise something to a higher standard, improve

Example

We decided to upgrade the software to the latest version.

私たちはソフトウェアを最新バージョンにアップグレードすることに決めました。

C1 adjective /ʌnˈkwaɪ.ət/

Unquiet

落ち着かない; 不安な; 動揺した

Meaning

restless; unable to remain still or quiet; anxious or troubled

Example

She spent an unquiet night worrying about the exam results.

彼女は試験結果を心配して落ち着かない夜を過ごした。

C2 verb /ˈʌndjʊleɪt/

undulate

波打つ

Meaning

To move with a smooth, wave-like motion.

Example

The snake undulated across the sand.

ヘビは砂の上をうねうねと進んでいった。

B2 adjective /ʌnˈhɜːrt/

unhurt

無傷

Meaning

Not injured or harmed.

Example

She walked away from the accident unhurt.

彼女は事故から無傷で歩き去った。

C1 adjective /ˌʌnprɪˈtɛnʃəs/

unpretentious

控えめな

Meaning

modest; not attempting to impress others with appearance or importance

Example

She lives in an unpretentious home but is very happy.

彼女は控えめな家に住んでいますが、とても幸せです。

B2 adjective /ʌnˈkwɒl.ɪ.faɪd/

Unqualified

資格がない; 経験不足の;

Meaning

not having the necessary skills or qualifications; complete or absolute

Example

He was unqualified for the engineering position due to lack of experience.

彼は経験不足でエンジニアの職に不適格でした。

C1 adjective ʌnˈtʃɑːtɪd

uncharted

未開拓

Meaning

Not mapped or surveyed; unknown or unexplored.

Example

The mission aimed to explore uncharted areas of the planet.

そのミッションは惑星の未開拓の地域を探査することを目的としていました。

B1 adjective /ˌʌnɪkˈspektɪd/

Unexpected

予想外の; 驚くべき

Meaning

not expected or anticipated; surprising

Example

The unexpected news left everyone speechless.

予想外のニュースは、皆を言葉を失わせた。

C1 verb /ʌnˈrævəl/

unravel

Meaning

To undo twisted or knitted threads; to solve or explain something complicated.

Example

The detective worked hard to unravel the mystery.

C1 adjective /ʌnˈwɪtɪŋ/

unwitting

無自覚

Meaning

Not aware of what is happening; done without realizing.

Example

She became an unwitting participant in the scam.

彼女は詐欺の無自覚な参加者になった。

B2 adjective /ˌʌnəˈfɪʃ.əl/

Unofficial

非公式な

Meaning

not officially authorized or confirmed; informal

Example

The unofficial results showed a close race.

非公式な結果は接戦を示しました。

C1 adjective /ˌjuːnɪˈsɛljʊlər/

unicellular

単細胞

Meaning

Consisting of a single cell.

Example

Amoebas are unicellular organisms.

アメーバは単細胞生物です。

B2 adjective /ʌnˈiːvən/

Uneven

不均一; 凹凸のある

Meaning

not level or smooth; not regular or consistent

Example

The road was uneven and full of potholes.

その道は不均一で、穴だらけだった。

B1 adjective /ʌnˈseɪf/

Unsafe

危険な; 危ない;

Meaning

involving or causing danger or risk; not protected from harm

Example

It is unsafe to walk alone in this neighborhood at night.

この地域では夜間に一人で歩くのは危険です。

C1 noun /ʌnˈfeɪθfʊlnəs/

unfaithfulness

不貞

Meaning

the quality of being disloyal or not faithful; breach of trust or fidelity

Example

His unfaithfulness led to the end of their marriage.

彼の不貞は結婚の終わりをもたらした。

B1 adverb /ˌʌpsaɪd ˈdaʊn/

Upside-down

逆さま

Meaning

with the upper part at the bottom; in or into a reversed position

Example

The picture was hanging upside-down on the wall.

絵は壁に逆さまに掛かっていた。

C2 adjective /ʌnˈwiːldi/

unwieldy

扱いにくい

Meaning

Difficult to carry or move because of its size, shape, or weight.

Example

The box was too unwieldy to carry up the stairs.

その箱は階段を上がるには重すぎて扱いにくかった。

A1 preposition /ˈʌndər/

under

下

Meaning

in or to a lower position than something

Example

The cat is under the table.

猫はテーブルの下にいます。

C1 adjective ʌnɪnˈhæbɪtəbəl

uninhabitable

住めない

Meaning

Not suitable or safe for people to live in.

Example

Rapid urbanization can make cities uninhabitable.

急速な都市化は都市を住めない場所にする可能性があります。

C1 adjective ʌnˈpær.ə.leld

Unparalleled

比類のない

Meaning

Having no equal; unmatched, peerless, and supreme in quality or achievement.

Example

The unparalleled beauty of the Taj Mahal amazes visitors.

タージ・マハルの比類のない美しさが訪問者を驚かせます。

C1 verb /ʌnˈnɜːrv/

unnerve

自信を失う

Meaning

to make someone lose confidence, courage, or composure

Example

The hostile questions began to unnerve the witness.

敵意のある質問が証人を動揺させ始めた。

C1 verb /ʌnˈsɛtl/

unsettle

動揺させる

Meaning

To disturb or make someone feel anxious or uneasy.

Example

The sudden news unsettled the entire community.

突然のニュースはコミュニティ全体を動揺させた。

C2 adjective /juːˈʒʊəriəs/

usurious

高利貸しの

Meaning

Charging excessively high interest rates on loans.

Example

The bank was accused of offering loans at usurious rates.

銀行は高利貸しの金利で融資を提供したとして告発されました。

C1 adjective /ˈʌpərˌmoʊst/

uppermost

最上

Meaning

situated at the highest place or most important

Example

Her family's safety was uppermost in her mind during the crisis.

危機の間、彼女の心の中で最も重要なのは家族の安全でした。

C1 adjective /ʌnˈseɪvəri/

unsavory

不快

Meaning

Disagreeable, unpleasant, or morally offensive.

Example

The politician was linked to an unsavory scandal.

その政治家は不快なスキャンダルに関連していました。

C1 adjective /ˌjuːtɪlɪˈtɛəriən/

utilitarian

Meaning

Designed to be useful or practical rather than attractive; relating to the doctrine that actions are right if they are useful or for the benefit of a majority.

Example

The building had a simple utilitarian design.

C2 noun /juːˌtɪlɪˈtɛəriənɪzəm/

utilitarianism

功利主義

Meaning

The ethical theory that actions are right if they are useful or for the benefit of the majority.

Example

Utilitarianism suggests that we should act to maximize overall happiness.

功利主義は、私たちが全体的な幸福を最大化するために行動すべきだと示唆しています。

B1 adjective /ʌnˈfeər/

Unfair

不公平; 不正;

Meaning

not right or just; treating people in a way that favors some over others

Example

It's unfair to blame her for something she didn't do.

それは彼女がやっていないことを責めるのは不公平です。

B2 verb /ʌnˈkʌvə(r)/

uncover

明らかにする

Meaning

to reveal something that was hidden or secret

Example

The investigation uncovered new evidence.

調査で新しい証拠が明らかになった。

C2 noun /ˈʌŋkʃən/

unction

聖別

Meaning

The act of anointing as part of a religious or ceremonial ritual; excessive or insincere flattery.

Example

The priest performed the holy unction with solemnity.

司祭は厳粛に聖別の儀式を行った。

C1 adjective /ʌnˈbraɪdld/

unbridled

抑制のない

Meaning

Uncontrolled and unrestrained.

Example

The protesters showed unbridled enthusiasm for change.

抗議者は変革に対して抑えきれない熱意を示しました。

B2 adjective /ʌnˈraɪp/

Unripe

未熟

Meaning

not fully developed or matured; not ready to be eaten

Example

The unripe bananas will turn yellow in a few days.

未熟なバナナは数日後に黄色くなります。

B2 adverb juːˈnæn.ɪ.məs.li

unanimously

全会一致で

Meaning

With the agreement of all people involved; without opposition.

Example

The proposal was unanimously accepted.

提案は全会一致で受け入れられました。

B2 adjective /ˈʌt.moʊst/

Utmost

最大の; 極限

Meaning

greatest; most extreme; maximum possible

Example

She showed utmost care while handling the fragile items.

彼女は壊れやすいアイテムを扱うとき、最大の配慮を示しました。

C1 adjective /ʌnˈruːli/

Unruly

無秩序な; 不従順な;

Meaning

difficult to control or manage; disorderly and disruptive

Example

The unruly crowd refused to follow the safety instructions.

無秩序な群衆は安全指示に従うことを拒否した。

B1 adjective /ʌnˈkaɪnd/

Unkind

無愛想; 不親切

Meaning

cruel; not nice or caring toward others

Example

It was unkind of him to make fun of her appearance.

彼が彼女の外見をからかうのは不親切だった。

B2 adjective /ʌnˌkənˈfɜːmd/

Unconfirmed

未確認; 未検証;

Meaning

not confirmed as true or definite; not verified or substantiated

Example

The report remains unconfirmed until we receive official verification.

報告書は公式の確認が得られるまで未確認のままです。

B1 preposition, adverb, adjective /ˌʌndərˈniːθ/

underneath

下に、下側に

Meaning

Located directly below or beneath something

Example

The keys were hidden underneath the pile of papers.

鍵は紙の山の下に隠されていました。

C2 verb /ˌʌn.dɪˈsiːv/

undeceive

誤解を解く

Meaning

To free someone from a misconception or false belief.

Example

She tried to undeceive him about the false rumors.

彼女は嘘の噂について彼を誤解を解こうとしました。

C1 adjective /ˌʌnbɪˈkʌmɪŋ/

unbecoming

不適切

Meaning

Not proper or appropriate for a person; unsuitable.

Example

His rude behavior was unbecoming of a leader.

彼の無礼な態度はリーダーとして不適切だった。

B1 adjective /ʌnˈtru/

Untrue

嘘の; 間違った

Meaning

not true; false; incorrect

Example

His statement about the incident was completely untrue.

彼の事件に関する声明は完全に嘘でした。

C2 adjective /ʌnˈtiːtʃəbəl/

unteachable

教えられない

Meaning

not able or willing to learn; resistant to instruction or guidance

Example

He was so stubborn that he became almost unteachable.

彼はとても頑固で、ほとんど教えられない状態だった。

B2 noun /ˌʌnəˌveɪləˈbɪləti/

unavailability

利用不可

Meaning

The state of being not available or not accessible.

Example

The unavailability of the manager caused a delay in the project.

マネージャーの不在がプロジェクトの遅延を引き起こした。

C2 adjective /ʌnˈlɛtəd/

unlettered

識字障害者

Meaning

lacking education or the ability to read and write; illiterate

Example

The unlettered villagers relied on oral traditions to preserve their history.

識字障害者の村人たちは口承伝承に頼って歴史を保存していた。

B1 adjective /ʌnˈpɒpjʊlə/

unpopular

不人気な

Meaning

not liked or supported by many people

Example

The decision was unpopular with the public.

その決定は世間で不人気だった。

B2 verb /ˌʌndərˈteɪk/

undertake

引き受ける

Meaning

to commit to and begin a task or project; to take on responsibility

Example

She decided to undertake a challenging project.

彼女は挑戦的なプロジェクトを始めることに決めました。

B1 adjective /ʌnˈnoʊn/

Unknown

未知

Meaning

not known or identified; unfamiliar

Example

The author of this letter remains unknown.

この手紙の著者は不明のままです。

B2 adjective /ʌnˈskɪld/

Unskilled

未熟な; 技術のない労働者

Meaning

lacking technical training or ability; not requiring special skills

Example

Many unskilled workers are looking for training opportunities.

多くの未熟な労働者がトレーニングの機会を探しています。

C1 noun /ˌjuːnɪˈfɔːrməti/

Uniformity

均一性; 一貫性; 同一状態

Meaning

the quality of being uniform; consistency or sameness

Example

The uniformity of the design created a pleasing visual effect.

デザインの均一性が魅力的な視覚効果を生み出しました。

C1 verb /ˌʌndəˈreɪt/

underrate

過小評価

Meaning

to fail to recognize the full value or importance of something or someone

Example

Many people underrate the benefits of regular exercise.

多くの人々が定期的な運動の利点を過小評価しています。

C1 adjective /ʌnˈmaɪndfəl/

Unmindful

無頓着な; 注意しない;

Meaning

not paying attention; careless; heedless

Example

She was unmindful of the danger around her.

彼女は周りの危険に気づいていませんでした。

C1 adjective ʌnˈmætʃt

unmatched

比類のない

Meaning

Not equaled or rivaled by any other; without equal.

Example

The freedom fighters showed unmatched bravery.

自由の戦士たちは比類のない勇気を示しました。

B2 verb /ˌʌndərˈɛstɪmeɪt/

underestimate

過小評価する

Meaning

To judge something as less important or smaller than it really is.

Example

Never underestimate the power of teamwork.

決してチームワークの力を過小評価しないでください。

B1 adjective /ʌnˈsɜːrtən/

Uncertain

不確か

Meaning

not able to be relied on; not known or definite; not having reliable knowledge

Example

I am uncertain about my future career plans.

私は自分の将来のキャリア計画に不確かさを感じています。