B2 adjective /ˌjuːnɪˈvɜːrsəl/

Universal

普遍的な

Meaning

applicable to all cases; existing everywhere

Example

Music is a universal language that everyone understands.

音楽は誰もが理解できる普遍的な言語です。

C1 noun /ˈjuːnɪsən/

unison

ユニゾン

Meaning

Simultaneous performance or utterance of action or speech.

Example

The choir sang in unison.

合唱団はユニゾンで歌いました。

C2 verb /juˈzɜrp/

usurp

奪取

Meaning

to take someone's position of power illegally or by force

Example

The general tried to usurp the king's throne.

将軍は王の玉座を奪おうとした。

B1 noun /juːˈten.səlz/

Utensils

食器

Meaning

tools or implements used for cooking, eating, or serving food

Example

Please wash all the cooking utensils after preparing dinner.

ディナーを準備した後、すべての料理用具を洗ってください。

B1 adjective /ʌnˈkʊkt/

uncooked

生の

Meaning

Not cooked; in a raw state.

Example

Eating uncooked meat can be dangerous.

生肉を食べるのは危険です。

B2 adjective /ˈʌpˌhɪl/

Uphill

困難な; 大きな努力が必要な; 上向きの傾斜

Meaning

difficult; requiring great effort; sloping upward

Example

Learning a new language can be an uphill battle.

新しい言語を学ぶことは困難な戦いである可能性があります。

C1 verb /ˌʌndərˈvæljuː/

undervalue

過小評価する

Meaning

To assign too low a value or importance to something or someone.

Example

She felt that her boss consistently undervalued her contributions.

彼女は自分の上司が彼女の貢献を一貫して過小評価していると感じていた。

C2 adjective /juːˈbɪkwɪtəs/

ubiquitious

遍在

Meaning

Present, appearing, or found everywhere.

Example

Smartphones have become ubiquitous in modern society.

スマートフォンは現代社会で遍在しています。

C1 adjective /ˌʌnɪnˈhɪbɪtɪd/

uninhibited

抑制されていない

Meaning

Not restrained or restricted; free in behavior or expression.

Example

She gave an uninhibited laugh at the joke.

彼女は冗談に対して抑制されずに笑った。

C2 verb /ʌnˈfrɒk/

unfrock

神父の職を剥奪する

Meaning

To remove a priest from his position or deprive someone of a rank.

Example

The corrupt priest was unfrocked after the investigation.

腐敗した神父は調査後に職を剥奪されました。

B1 adjective /ˌʌnsəkˈsesfl/

Unsuccessful

失敗した; 成功しなかった;

Meaning

not achieving desired aims or results; failing to accomplish a purpose

Example

His unsuccessful attempt to climb the mountain left him disappointed.

彼の失敗した山登りの試みは彼を失望させた。

B2 noun /ˈɜː.dʒən.si/

Urgency

緊急性

Meaning

the quality of requiring immediate action or attention; pressing importance

Example

The urgency of the situation required immediate medical attention.

その状況の緊急性により、直ちに医療の注意が必要でした。

C1 adjective /ʌnˈsɪvəlaɪzd/

Uncivilized

未開の; 野蛮な;

Meaning

not developed in terms of civilization; lacking social organization and culture; barbarous

Example

The explorers encountered an uncivilized tribe deep in the Amazon rainforest.

探検家たちはアマゾンの雨林の奥深くで未開の部族に出会った。

B1 adjective /ˈɜːrdʒənt/

Urgent

緊急

Meaning

requiring immediate action or attention; pressing

Example

The patient needs urgent medical attention.

患者は緊急の医療支援が必要です。

C1 adjective /ʌnˈmænɪdʒəbəl/

Unmanageable

管理できない; 手に負えない

Meaning

difficult or impossible to control or handle

Example

The large class became unmanageable without proper supervision.

適切な監視がなければ、大きなクラスは管理できなくなった。

C2 noun /ˈjuːnɪvəˌlɛns/

univalence

単価性

Meaning

The state of having a single valence or combining power, especially in chemistry.

Example

Hydrogen is characterized by its univalence in chemical reactions.

水素は化学反応においてその単価性によって特徴づけられています。

B2 adjective /ˌʌndɪˈnaɪəbl/

Undeniable

否定できない

Meaning

impossible to deny or dispute; clearly true

Example

The evidence of his guilt was undeniable.

彼の有罪の証拠は否定できなかった。

C2 adjective /ˈʌndjʊleɪtɪŋ/

undulating

波打つ

Meaning

Having a smoothly rising and falling form or motion like waves.

Example

We drove through undulating hills.

私たちは起伏のある丘をドライブしました。

C1 noun /ˈʌp.rɔːr/

Uproar

騒動; 騒ぎ; 騒音

Meaning

a loud and emotional noise or disturbance; public outcry

Example

The announcement caused an uproar among the students.

その発表は学生たちの間で騒動を引き起こしました。

A2 noun /ˈʌndərweər/

underwear

下着

Meaning

Clothing worn beneath outer clothes, typically next to the skin.

Example

He bought new underwear for the trip.

彼は旅行のために新しい下着を買った。

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。

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。

C2 noun/verb /ˈʌpˌkæst/

upcast

上に投げる

Meaning

Verb: To cast or throw upward. Noun: Something thrown or directed upward.

Example

The fisherman upcast his net into the air.

漁師は彼の網を空中に投げた。

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.

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。

C1 verb /ʌnˈkɔrk/

uncork

コルクを抜く

Meaning

To remove the cork from a bottle; to open a bottle, especially of wine

Example

He uncorked the wine and poured a glass for everyone.

彼はワインのコルクを抜き、皆にグラスを注いだ。

B2 adverb /ˈɜːrdʒəntli/

urgently

緊急に

Meaning

in a way that requires immediate attention or action

Example

The patient urgently needs medical attention.

患者は緊急に医療処置が必要です。

C1 adjective /ˌʌndərˈsaɪzd/

undersized

小さすぎる

Meaning

Smaller than the usual or expected size.

Example

The undersized puppy struggled to keep up with its siblings.

小さすぎる子犬は、兄弟姉妹と一緒に歩くのに苦労しました。

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。

C1 verb /ˈʌndərkʌt/

undercut

Meaning

to sell at a lower price than a competitor; to weaken or undermine something

Example

The company tried to undercut its rivals by offering lower prices.

C1 noun /ˌʌnriˈælɪti/

unreality

非現実感

Meaning

the state or quality of being unreal; lack of reality or truth

Example

The dreamlike setting gave the story a sense of unreality.

夢のような舞台は物語に非現実感を与えた。

C2 noun /ɜːrˈbænɪti/

urbanity

都会的な気品

Meaning

refined courtesy, elegance, and sophistication in manner

Example

Her urbanity made her popular among diplomats and leaders.

彼女の都会的な気品は、外交官やリーダーの間で人気を集めました。

C1 noun /ˈʌndərˌɡɑːrmənt/

undergarment

下着

Meaning

a piece of clothing worn under outer clothes, usually next to the skin

Example

He bought new undergarments for the wedding.

彼は結婚式のために新しい下着を買いました。

C1 adjective /ʌnˈkæni/

uncanny

不気味

Meaning

Strange or mysterious, especially in an unsettling way.

Example

She has an uncanny ability to predict the future.

彼女は未来を予測する不気味な能力を持っている。

A2 verb /ʌpˈset/

upset

困らせる

Meaning

to make someone worried, sad, or angry; to disturb

Example

The bad news upset everyone.

悪いニュースはみんなを upset した。

B2 adjective /ʌnˈfeɪθ.fəl/

Unfaithful

不忠実

Meaning

not loyal or true to a spouse, partner, or commitment

Example

He was unfaithful to his wife for many years.

彼は何年も妻に不忠実でした。

B2 adjective /ʌnˈɡreɪt.fəl/

Ungrateful

恩知らず

Meaning

not feeling or showing thanks for something done or given; not appreciating kindness

Example

She felt he was ungrateful for all the help she had given him.

彼女は、彼が彼女が与えたすべての助けに対して恩知らずだと感じた。

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。

C1 adjective /ʌnˈkʌltʃəd/

Uncultured

無教養な; 教養のない

Meaning

lacking good manners, refinement, or education; uncivilized

Example

His uncultured behavior embarrassed everyone at the dinner party.

彼の無教養な行動はディナーパーティーでみんなを困らせた。

B2 adjective /ʌnˈkɒmən/

uncommon

珍しい

Meaning

rare, unusual, or remarkable

Example

It is uncommon to see snow in this region.

この地域で雪を見るのは珍しい。

A1 adverb /ˈjuː.ʒu.ə.li/

Usually

通常; 一般的に

Meaning

in most cases; generally; as a rule

Example

I usually wake up at 7 AM every morning.

私は通常、毎朝7時に起きます。

B1 noun /ˈjuːnjən/

Union

連合

Meaning

the action of joining or combining; a political unit formed from separate states

Example

The union of the two companies created a powerful corporation.

二つの企業の連携が強力な企業を作り出しました。

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。

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。

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。

C1 adjective /ˌʌnɪˈkwɪvəkəl/

unequivocal

明確

Meaning

Leaving no doubt; clear and unambiguous

Example

She gave an unequivocal answer to the question.

彼女は質問に対して明確な答えを出しました。

B2 adjective /ʌnˈdɪvaɪdɪd/

Undivided

分割されていない; 完全な; 分けられていない

Meaning

whole; complete; not separated or split

Example

The team showed undivided attention to the coach's instructions.

チームはコーチの指示に対して分け隔てなく注意を示しました。

C1 adjective /ˌʌnəˈfɛktɪd/

unaffected

無影響な, 自然な

Meaning

Not influenced or touched by something; genuine and natural.

Example

He remained unaffected by the criticism and kept working hard.

彼は批判に動じることなく、懸命に働き続けました。

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。

A2 conjunction /ʌnˈlɛs/

unless

もし～でない限り

Meaning

except if

Example

We won't go unless it stops raining.

雨が止まない限り、私たちは行きません。

C1 noun /ʌnɪmˈpɔːrtəns/

unimportance

重要でなさ

Meaning

the state or quality of being insignificant or not important

Example

He dismissed the issue with a sense of unimportance.

彼はその問題を重要でないものとして無視した。

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。

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。

C1 verb /ʌnˈmɑːsk/

unmask

正体を暴く

Meaning

to remove a mask or covering; to reveal the true identity, nature, or intentions of someone or something

Example

The investigation helped unmask the real culprit behind the crime.

その捜査は犯罪の背後にいる本当の犯人を暴いた。

B2 noun /ˈʌndərkləʊðz/

underclothes

下着

Meaning

Clothing worn beneath outer clothes, such as underwear or lingerie

Example

He folded his underclothes neatly before packing them.

彼は下着を丁寧にたたんでから詰めた。

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。

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。

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。

A2 noun /ʌmˈbrɛlə/

umbrella

傘

Meaning

A device used for protection against rain or sun, typically consisting of a collapsible canopy mounted on a central rod.

Example

She opened her umbrella as it started to rain.

雨が降り始めたので、彼女は傘を開いた。

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.

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。

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 /ˌʌnˈnoʊ.tɪst/

Unnoticed

気づかれなかった; 無視された

Meaning

not seen or observed; ignored

Example

His hard work went unnoticed by his manager.

彼の努力はマネージャーに気づかれませんでした。

B2 adjective /ʌn.rɪˈleɪ.tɪd/

Unrelated

無関係な; 関連していない

Meaning

having no connection or relationship; not connected by family ties

Example

The two incidents were completely unrelated to each other.

二つの出来事は完全に無関係だった。

C1 adjective /ʌnˈsaɪtli/

unsightly

見苦しい

Meaning

Unpleasant to look at; ugly.

Example

The garbage pile created an unsightly view in the park.

ゴミの山は公園に見苦しい景色を作り出した。

C1 adjective /ʌnˈkwes.tʃən.ə.bl̩/

Unquestionable

議論の余地がない; 確実な

Meaning

not able to be disputed or doubted; certain and beyond doubt

Example

Her honesty and integrity are unquestionable qualities.

彼女の誠実さと誠意は議論の余地がない特性です。

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。

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。

B2 adjective /ˌʌnkənˈtroʊld/

uncontrolled

制御不能な

Meaning

not restrained or managed; lacking control

Example

The wildfire spread in an uncontrolled manner, causing widespread damage.

山火事は制御不能な方法で広がり、広範囲に被害をもたらした。

C1 adjective /ʌnˈweɪ.vər.ɪŋ/

unwavering

揺るぎない

Meaning

Steady or resolute; not wavering.

Example

He showed unwavering dedication to his goal.

彼は目標に対する揺るぎない献身を示しました。

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。

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 adjective /ʌnˈblʌʃɪŋ/

Unblushing

恥知らずな; 図々しい

Meaning

showing no shame or embarrassment; boldly shameless

Example

He told the unblushing lie without any hesitation.

彼はためらうことなく無恥な嘘をついた。

C1 adjective /ʌnˈsəʊʃəbl/

unsociable

非社交的な

Meaning

not enjoying the company of others; avoiding social interaction

Example

He became unsociable after moving to a new city.

新しい街に引っ越してから、彼は非社交的になった。

B1 adjective /ˈɜːrbən/

urban

都市的な

Meaning

related to, characteristic of, or situated in a city or town

Example

Urban areas often have higher population density than rural areas.

都市部は、農村部よりも人口密度が高いことがよくあります。

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。

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。

C2 adjective /ˈɜːrsaɪn/

ursine

クマのような

Meaning

Relating to or resembling a bear.

Example

The man’s ursine strength amazed everyone.

その男のクマのような力は、みんなを驚かせました。

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。

C1 noun ˈʌp.raɪ.zɪŋ

uprising

反乱

Meaning

An act of resistance or rebellion; a revolt against an authority or government.

Example

The uprising marked the beginning of the revolution.

反乱は革命の始まりを示しました。

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。

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 /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。

B2 adjective /ʌnˈwel.kəm/

Unwelcome

不快な; 望ましくない; 招待されていない

Meaning

not wanted or accepted; not invited or pleasant

Example

The unwelcome news ruined their vacation plans.

その歓迎されないニュースは彼らの休暇計画を台無しにしました。

B2 adverb /ʌnˈkaɪndli/

unkindly

意地悪に

Meaning

in a cruel, harsh, or unsympathetic manner

Example

She spoke unkindly about her colleague during the meeting.

彼女は会議中に同僚のことを意地悪に話した。

C1 adjective /ʌnˈduː/

Undue

過度の; 不適切な; 必要以上または適切以上の

Meaning

excessive; inappropriate; more than is necessary or proper

Example

The teacher complained about undue pressure from parents.

教師は親からの過度なプレッシャーについて不満を言いました。

B2 adjective /ˌʌnɪnˈfɔːrmd/

uninformed

情報に疎い

Meaning

lacking knowledge or awareness about a particular subject; not educated or informed

Example

The decision was made by an uninformed committee.

その決定は情報に疎い委員会によって下された。

C2 adjective /ʌnˈmɪtɪɡeɪtɪd/

unmitigated

完全な

Meaning

absolute; not lessened or moderated

Example

The meeting was an unmitigated disaster.

会議は完全な災害でした。

B2 adjective /ʌnˈstɛdi/

unsteady

不安定な

Meaning

not firm or stable; likely to change or fail

Example

She felt unsteady on her feet after the long journey.

長旅の後、彼女は足元が不安定だった。

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.

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 noun /ˌʌndəˈɡrædʒuət/

undergraduate

学部生

Meaning

a student who has not yet earned a bachelor's degree

Example

She is an undergraduate studying computer science.

彼女はコンピュータサイエンスを学んでいる学部生です。

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 /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 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。

B2 adjective /ˈʌt.ɚ/

Utter

完全な; 絶対的な; 全体の

Meaning

complete; absolute; total

Example

The movie was an utter disaster at the box office.

その映画は興行収入で完全に失敗しました。

A2 noun /ˌʌpˈsteəz/

Upstairs

上の階

Meaning

on or to an upper floor of a building; the upper floor or floors

Example

She went upstairs to her bedroom to rest.

彼女は休憩するために自分の寝室に上がった。

B2 adjective /ʌnprəˈfɛʃ.ən.əl/

Unprofessional

不专业

Meaning

not conforming to the standards expected in a particular profession

Example

His unprofessional behavior led to his dismissal from the company.

彼の不専門的な行動は、会社からの解雇を引き起こしました。

B2 verb ˈjuːnɪfaɪ

unify

統一する

Meaning

To make or become united, uniform, or whole; to bring together into a single unit.

Example

Adolescents unify with peers for social acceptance.

若者たちは社会的受け入れのために仲間と統一します。

C1 noun /ˈʌndərˌteɪkər/

undertaker

葬儀屋

Meaning

A person whose job is to prepare the dead for burial and arrange funerals.

Example

The undertaker prepared the body for the funeral service.

葬儀屋は葬儀のために遺体を準備しました。

B1 adjective /ʌnˈklɪər/

unclear

不明確

Meaning

not easy to understand; vague or ambiguous

Example

The instructions were unclear, so I asked for clarification.

指示が不明確だったので、私は説明を求めました。

B2 noun /ʌnˈsɜːrtənti/

Uncertainty

不確実性; 疑念または確信の欠如

Meaning

the state of being uncertain; doubt or lack of sureness

Example

The uncertainty about the weather delayed our trip.

天気についての不確実性が私たちの旅行を遅らせた。

C2 adjective /ʌnˈwəʊntɪd/

unwonted

異常

Meaning

Unusual, uncommon, or out of the ordinary.

Example

She spoke with an unwonted gentleness that surprised everyone.

彼女は予想外の優しさで話し、皆を驚かせました。

C1 adjective /ʌnˈtɛnəbl/

untenable

維持できない

Meaning

not able to be maintained or defended against attack or objection

Example

The politician resigned when his position became untenable.

政治家は彼の立場が維持できなくなったときに辞職しました。

C1 adjective /ʌnˈsəʊʃəl/

unsocial

非社交的な

Meaning

not enjoying the company of others; avoiding social interaction; contrary to social norms

Example

He prefers unsocial hours so he can work alone without interruptions.

彼は一人で働くために非社交的な時間を好む。

C1 adjective /ʌnˈkuːθ/

uncouth

無作法

Meaning

Lacking good manners, refinement, or grace; awkward or rough.

Example

His uncouth behavior shocked the guests at the party.

彼の無作法な行動はパーティーのゲストを驚かせました。

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。

C2 noun /ˈjuːʒəri/

usury

高利貸し

Meaning

The practice of lending money at unreasonably high interest rates.

Example

The law strictly prohibits usury.

法律は高利貸しを厳しく禁止しています。

C1 verb /ˌʌndərˈsteɪt/

understate

過小評価する

Meaning

To describe something as being less important or serious than it really is.

Example

He tends to understate his achievements.

彼は自分の業績を過小評価する傾向があります。

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。

C1 noun /ˈʌp.raɪt.nəs/

Uprightness

誠実; 正直

Meaning

the quality of being honest and morally correct; integrity

Example

His uprightness in business dealings earned him great respect.

彼のビジネスでの正直さは、彼に大きな尊敬をもたらした。

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。

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。

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。

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 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 /ʌnˈfɛtər/

unfetter

制約から解放する

Meaning

to release from restraint or restriction; to free

Example

The new law will unfetter small businesses from excessive regulations.

新しい法律は小規模なビジネスを過剰な規制から解放します。

C2 adjective /ʌnˈtræməld/

untrammeled

制限のない自由

Meaning

Not restricted or hampered; free and unrestricted.

Example

She enjoyed untrammeled freedom in her new life abroad.

彼女は海外での新しい生活で制限のない自由を楽しんでいた。

B1 adjective /ˌʌnɪmˈpɔːrtənt/

unimportant

重要でない

Meaning

not having much value, significance, or influence

Example

The detail seemed unimportant compared to the main issue.

その詳細は主要な問題と比べて重要でないように思えた。

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。

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。