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。

C2 adjective /ˌʌn.təˈwɔːrd/

untoward

予期しない

Meaning

Unexpected and inappropriate or inconvenient.

Example

The meeting ended without any untoward incidents.

会議は予期しない事件なしで終了しました。

B2 adjective /ʌnˈlɔːfl/

Unlawful

違法; 不法

Meaning

not authorized by law; illegal

Example

The court declared the search unlawful.

裁判所はその捜索を不法と宣言しました。

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.

C2 verb /ʌpˈhiːv/

upheave

持ち上げる

Meaning

to lift or raise something forcefully; to cause to rise suddenly

Example

The workers had to upheave the heavy stone to clear the path.

作業員たちは道を清掃するために重い石を持ち上げなければならなかった。

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。

B2 adverb /ʌnˈkɒnʃəsli/

unconsciously

無意識に

Meaning

without being aware of one's actions or surroundings

Example

She unconsciously tapped her foot to the rhythm of the music.

彼女は無意識に音楽のリズムに合わせて足をトントンしていた。

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 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。

C2 adjective /juːˈnɪsənənt/

unisonant

調和の取れた

Meaning

Sounding together or in harmony.

Example

The unisonant voices created a powerful effect.

調和の取れた声が強力な効果を生み出した。

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。

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。

B2 verb /ˈjuːtɪlaɪz/

utilize

利用する

Meaning

to make practical or effective use of something

Example

The company aims to utilize solar energy for production.

その会社は生産のために太陽光エネルギーを活用することを目指しています。

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。

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。

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 /ˌʌndərˈlaɪɪŋ/

underlying

根本的な

Meaning

basic or hidden but important; forming the foundation of something

Example

The underlying reason for the conflict was never addressed.

その対立の根本的な理由は決して対処されませんでした。

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。

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。

C2 noun /ˈʌndərlɪŋ/

underling

部下

Meaning

a person of low rank or importance; a subordinate

Example

The manager ordered his underlings to finish the task quickly.

マネージャーは部下に仕事を迅速に終わらせるよう命じました。

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。

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。

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。

B1 adjective /ʌnˈjuzd/

Unused

未使用の; 使われていない

Meaning

not being used; not having been used before

Example

There are many unused rooms in this old mansion.

この古い館には未使用の部屋がたくさんあります。

A2 adjective /ˈjuːʒəl/

usual

通常

Meaning

habitually or typically occurring or done

Example

It’s our usual meeting spot.

これは私たちの通常の会議場所です。

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。

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。

B2 adverb /ʌnˈwɪlɪŋli/

unwillingly

不本意に

Meaning

in a way that shows reluctance or lack of desire; not willingly

Example

She unwillingly agreed to attend the meeting.

彼女は不本意に会議に出席することに同意した。

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 /ˌʌndərˈsteɪtɪd/

understated

控えめな

Meaning

Presented in a subtle and restrained way.

Example

She wore an elegant but understated dress.

彼女はエレガントで控えめなドレスを着ていた。

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。

C1 verb /ˌʌn.dəˈtʃɑːrdʒ/

undercharge

過少に請求する

Meaning

To charge less than the correct or fair amount.

Example

The shopkeeper accidentally undercharged me for the groceries.

店主は私に食料品を過少に請求しました。

C1 adverb /ˌʌnkənˈvɛnʃənəli/

unconventionally

型破りに

Meaning

in a way that is not based on or conforming to accepted standards or norms

Example

She dresses unconventionally, mixing bold colors and patterns that surprise everyone.

彼女は型破りに服装をしており、大胆な色と柄を組み合わせて皆を驚かせる。

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。

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。

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 adjective /ʌnˈɪndʒərd/

uninjured

無傷

Meaning

Without injury; not physically harmed.

Example

All the passengers were rescued uninjured.

すべての乗客は無傷で救助されました。

B2 adjective /ˌʌnˈkɔːrdɪneɪtɪd/

uncoordinated

不器用; 協調性のない

Meaning

lacking coordination, not well-organized or clumsy in movement

Example

His movements were uncoordinated, making him prone to accidents.

彼の動きは不器用で、事故を起こしやすかった。

C1 adjective /ˌʌnˈɪntɪmeɪtɪŋ/

unintimating

示唆しない

Meaning

Not giving a hint or suggestion; not indicating.

Example

His unintimating tone gave no clue of his true feelings.

彼の示唆しない口調は彼の本当の気持ちを示すものではありませんでした。

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。

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。

B1 adjective /juːˈniːk/

Unique

ユニーク; 独特; 珍しい

Meaning

being the only one of its kind; unlike anything else

Example

Every snowflake is unique in its pattern.

すべての雪片はそのパターンでユニークです。

C2 noun /ˌjuːzɜːrˈpeɪʃən/

usurpation

横領

Meaning

The act of taking someone's power or property illegally or by force.

Example

The general's usurpation of the presidency led to political unrest.

将軍の大統領職の横領は政治的混乱を引き起こした。

C1 adjective /ʌnˈtʌtʃəbəl/

Untouchable

触れられない; 批判や攻撃を受けない

Meaning

not able to be touched or affected; beyond criticism or attack

Example

The CEO seemed untouchable despite the scandal.

CEOはスキャンダルにもかかわらず、アンタッチャブルのように見えた。

C1 adjective ʌnˈskruːpjʊləs

unscrupulous

不道徳な

Meaning

Having or showing no moral principles; not honest or fair.

Example

Unscrupulous peers can lead adolescents to delinquency.

不道徳な仲間は、若者を犯罪に導くことがあります。

B2 adjective /ʌnˈberəbəl/

Unbearable

耐えられない

Meaning

too painful, annoying, or unpleasant to tolerate; impossible to endure

Example

The heat in the desert was unbearable.

砂漠の暑さは耐えられなかった。

A1 adjective /ˈjuːs.fəl/

Useful

役に立つ; 実用的な

Meaning

having a beneficial purpose; practical

Example

This tool is very useful for fixing problems.

このツールは問題を解決するために非常に役立ちます。

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 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。

C1 adjective /ʌnˈkɛmpt/

unkempt

だらしない

Meaning

Having an untidy or disheveled appearance.

Example

He looked unkempt after sleeping outdoors all night.

彼は一晩外で寝た後、だらしなく見えた。

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 /ˌjuːnɪˈlætərəl/

Unilateral

一方的

Meaning

one-sided; involving only one party

Example

The country made a unilateral decision to withdraw from the treaty.

その国は条約から撤退するという一方的な決定を下しました。

C1 adjective /ˌʌn.əˈdʌl.tə.reɪ.tɪd/

Unadulterated

純粋

Meaning

not mixed or diluted with any different or extra elements; pure

Example

She felt unadulterated joy when she heard the news.

彼女はそのニュースを聞いたとき、純粋な喜びを感じました。

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 /ʌnˈʃʊr/

unsure

不確かな

Meaning

not certain or confident; feeling doubt

Example

She felt unsure about the decision.

彼女はその決定について不確かだった。

C2 adjective /ʌnˈstɪntɪŋ/

unstinting

惜しみなく

Meaning

given generously without holding back

Example

She received unstinting support from her family.

彼女は家族から惜しみなく支援を受けた。

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。

A2 adjective /ʌnˈtaɪdi/

Untidy

散らかった; 無秩序な;

Meaning

not neat or orderly; messy and disorganized

Example

Her untidy room was filled with clothes scattered everywhere.

彼女の散らかった部屋は、どこにでも散らばった服でいっぱいでした。

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。

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 /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 noun ˌʌndərˈprɪvəlɪdʒd ɡruːps

underprivileged groups

恵まれないグループ

Meaning

Groups of people who lack basic necessities or advantages that are available to other members of society.

Example

Underprivileged groups benefit from social initiatives.

恵まれないグループは社会的なイニシアティブから利益を得ます。

C1 noun /ʌpˈhiːvəl/

upheaval

激変

Meaning

a violent or sudden change or disruption to something

Example

The company faced a major upheaval after the sudden resignation of its CEO.

その会社は、CEOの突然の辞任後、大きな激変を経験しました。

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 /ˈʌmbrɪdʒ/

umbrage

怒り, 不満

Meaning

A feeling of resentment or offense.

Example

She took umbrage at his rude remark.

彼女は彼の無礼な発言に怒りを感じた。

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。

C1 noun /ˌʌl.tɪˈmeɪ.təm/

Ultimatum

最終通告

Meaning

a final demand or statement of terms, the rejection of which will result in retaliation

Example

The boss gave him an ultimatum: improve or be fired.

上司は彼に最終通告を与えた：改善するか、解雇されるかだ。

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。

C1 adjective /ˌʌndərɪkˈspoʊzd/

underexposed

露出不足、無視された

Meaning

insufficiently exposed to light (in photography) or not given enough attention

Example

The photo was underexposed and looked too dark.

写真は露出不足で、暗すぎて見えました。

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。

C1 adjective /ˌʌnəˈsjuːmɪŋ/

unassuming

控えめな

Meaning

Not pretentious or arrogant; modest.

Example

Despite his success, he remained unassuming and humble.

成功にもかかわらず、彼は控えめで謙虚なままでした。

B2 adverb /ʌnˈnesəserəli/

Unnecessarily

不必要に

Meaning

to a greater extent than is needed; without necessity

Example

Don't worry unnecessarily about the exam.

試験について不必要に心配しないでください。

B2 adjective /ˌʌnrɪˈzɒlvd/

unresolved

未解決の

Meaning

not solved or settled; remaining undecided or unclear

Example

The dispute remains unresolved despite several meetings.

その問題は何度も会議をしたにもかかわらず未解決のままだ。

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。

C2 noun /ˈʌm.brə/

Umbra

完全な影、太陽黒点の暗い中心

Meaning

the fully shaded inner region of a shadow cast by an opaque object; the dark center of a sunspot

Example

During the eclipse, we stood in the moon's umbra.

日食の際、私たちは月のアンブラの中に立っていました。

A1 interjection /ʌ/

uh

ああ

Meaning

a sound people make when they hesitate or are unsure what to say next.

Example

Uh, I’m not sure if that’s the right answer.

ああ、それが正しい答えかどうかはわからない。

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 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。

C2 adjective /ʌnˈflɛdʒd/

unfledged

未熟な

Meaning

Inexperienced, immature, or not fully developed.

Example

The unfledged writer struggled to complete his first novel.

未熟な作家は、最初の小説を完成させるのに苦労しました。

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。

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。

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 adverb /ʌnˈɜːrɪŋli/

unerringly

間違いなく

Meaning

Without making any mistakes; always accurate

Example

The archer aimed unerringly at the target.

弓矢は間違いなくターゲットに向かって狙いを定めた。

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 adjective /ʌnˈfɛtərd/

unfettered

自由な

Meaning

not restricted or confined; free

Example

The artist enjoyed unfettered freedom of expression.

アーティストは制限のない表現の自由を楽しんだ。

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 adverb /ˈʌt.ə.li/

Utterly

完全に; 絶対に; 完全に

Meaning

completely; absolutely; totally

Example

The movie was utterly boring and I fell asleep.

その映画は完全に退屈で、私は寝てしまいました。

B2 adjective /ʌnˈhɛlpfəl/

unhelpful

役に立たない

Meaning

not providing help or support; making a situation harder rather than easier

Example

His unhelpful attitude slowed down the entire project.

彼の役に立たない態度はプロジェクト全体を遅らせた。

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.

B2 adjective /ʌnˈsteɪbəl/

Unstable

不安定

Meaning

likely to change; not steady or secure; unsteady

Example

The unstable economy made people worried about their jobs.

不安定な経済は、人々を自分たちの仕事について心配させました。

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。

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。

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。

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 verb /ʌnˈroʊl/

unroll

広げる

Meaning

to open something that is rolled up; to spread out gradually

Example

She unrolled the map on the table to find the route.

彼女は道を探すためにテーブルの上で地図を広げた。

C1 adjective /ʌnˈɒnəd/

unhonoured

敬われない

Meaning

not respected or given the recognition that is deserved; treated without honor

Example

He felt unhonoured after his years of service were ignored.

長年の奉仕が無視され、彼は敬われないと感じた。

C2 adjective /ˌʌnsɛrəˈmoʊniəs/

unceremonious

儀式なし/無礼

Meaning

Done without formality or courtesy; abrupt or rude.

Example

He made an unceremonious exit from the party.

彼はパーティーから儀式なしで退出しました。

B1 adjective /ˈʌpər/

upper

上部

Meaning

higher in position or rank

Example

The upper floor of the building is under renovation.

建物の上の階は改装中です。

B1 adjective /ˈjuːnɪfɔːrm/

Uniform

制服

Meaning

consistent; identical; standardized

Example

All students must wear a uniform to school.

すべての学生は学校で制服を着なければなりません。

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。

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 /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 /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。

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。

B2 adjective /ˌʌnəˈvɔɪdəbəl/

Unavoidable

避けられない; 避けることができない; 必然的な

Meaning

cannot be avoided; certain to happen; inevitable

Example

The meeting is unavoidable, so we must attend.

その会議は避けられないので、出席しなければなりません。

B1 adjective /ˌʌnbɪˈliːvəbəl/

Unbelievable

信じられない

Meaning

impossible to believe; extremely surprising or remarkable

Example

The magician's performance was absolutely unbelievable.

魔法使いのパフォーマンスは絶対に信じられなかった。

A2 adjective /ʌnˈlʌki/

Unlucky

不運; ラッキーでない

Meaning

having bad luck; unfortunate

Example

He was unlucky to miss the winning shot.

彼は勝つシュートを外して不運だった。

C2 adjective /ʌnˈspɛərɪŋ/

unsparing

容赦ない

Meaning

Showing no mercy or generosity; harsh or severe.

Example

The critic was unsparing in his review of the play.

批評家は彼の演劇レビューで容赦なかった。

B2 adjective /ʌnhaɪˈdʒiːnɪk/

Unhygienic

不衛生な; 適切な衛生状態の欠如

Meaning

not clean; lacking proper sanitation

Example

The restaurant was closed due to unhygienic conditions in the kitchen.

レストランは不衛生な厨房の状態で閉店しました。

C2 adjective /ˌʌltrəˈmʌndeɪn/

ultramundane

超越的

Meaning

Relating to things beyond the physical world; supernatural or transcendental.

Example

Philosophers often discuss ultramundane realities beyond human perception.

哲学者たちはしばしば人間の知覚を超えたウルトラムンデインな現実について議論します。

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。

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。

C2 adjective /ʌnˈsʌlid/

unsullied

汚れのない

Meaning

not spoiled or made impure; perfectly clean or pure

Example

His reputation remained unsullied despite the accusations.

彼の評判は告発にもかかわらず汚れのないままでした。

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。

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。

B2 adjective /ˌʌndɪˈsaɪdɪd/

Undecided

未決定; 不確実

Meaning

not having made a decision; uncertain

Example

She was undecided about which college to attend.

彼女はどの大学に進学するか決めかねていた。

B1 adverb /ʌnˈfɔːrtʃənətli/

Unfortunately

残念ながら

Meaning

used to express regret or disappointment about something

Example

Unfortunately, the weather was bad for our picnic.

残念ながら、私たちのピクニックには天気が悪かった。

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。

B2 adjective /ʌnˈrɪəl/

unreal

非現実的な

Meaning

not real or not based on reality; exaggerated or imaginary

Example

The experience felt unreal after the sudden news.

突然の知らせの後、その体験は非現実的に感じられた。

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。

B2 adjective /ʌnəˈfreɪd/

unafraid

恐れない

Meaning

Not feeling fear; brave or courageous

Example

She walked into the dark room, unafraid of what might be inside.

彼女は暗い部屋に入り、恐れないで何があるかを見た。