B1 adjective /juːˈnaɪtɪd/

United

団結した; 一緒に; 同意した

Meaning

joined together for a common purpose; in agreement

Example

The team was united in their goal to win.

チームは勝利を目指して団結していた。

B1 noun /ˈjuːnɪvɜːrs/

Universe

宇宙

Meaning

all existing matter and space; the cosmos

Example

Scientists study the universe to understand its mysteries.

科学者たちは宇宙の謎を解明するために研究しています。

B1 adjective /ʌnˈfɔːr.tʃən.ət/

Unfortunate

不運な; 残念な

Meaning

having bad luck; regrettable or unlucky

Example

It was unfortunate that the meeting was cancelled at the last minute.

会議が最後の瞬間にキャンセルされたのは不運でした。

B1 adjective ʌnˈplænd

unplanned

計画外の

Meaning

Not planned or arranged in advance; happening spontaneously without preparation.

Example

Unplanned urbanization contributes to environmental issues.

計画外の都市化は環境問題に寄与する。

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。

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。

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 noun /ʌnˈhæp.i.nəs/

unhappiness

不幸

Meaning

the state of being unhappy; sadness or dissatisfaction

Example

Her constant unhappiness affected everyone around her.

彼女の絶え間ない不幸は周囲の人々に影響を与えた。

B1 adjective /ʌnˈlaɪkli/

Unlikely

ありそうにない; 予想外の

Meaning

not likely to happen; improbable

Example

It's unlikely to rain today with such clear skies.

こんなに晴れた空では、今日は雨が降る可能性は低い。

B1 adjective /ˌʌnˈpeɪd/

Unpaid

無給の; 支払いなし

Meaning

not paid for; without payment or salary

Example

She worked as an unpaid intern for six months.

彼女は無給のインターンとして6ヶ月間働きました。

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。

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。

B1 adjective /ʌnˈkaʊntəbəl/

Uncountable

数えきれない; 無限の

Meaning

too many to be counted; innumerable; infinite in quantity

Example

There are uncountable stars in the night sky.

夜空には無数の星があります。

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。

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。

B1 adjective /ʌnˈmærid/

unmarried

未婚

Meaning

Not married; single.

Example

He is thirty-five and still unmarried.

彼は三十五歳で、まだ未婚です。

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。

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。

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 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。

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。

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。

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。

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。

B1 adjective /ʌnˈwel/

Unwell

体調不良; 病気

Meaning

not in good health; feeling sick or ill

Example

She has been feeling unwell since yesterday.

彼女は昨日から体調が悪い。

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。

B1 noun /ˈjuːs.fəl.nəs/

Usefulness

有用性

Meaning

the quality of being useful; practical value or helpfulness

Example

The usefulness of this tool became apparent during the project.

このツールの有用性はプロジェクト中に明らかになりました。

B1 noun /ˌʌnɪmˈplɔɪmənt/

Unemployment

失業

Meaning

the state of being unemployed; lack of paid work

Example

The unemployment rate has increased significantly this year.

今年の失業率は大幅に増加しました。

B1 adjective /ˈʌpˌkʌmɪŋ/

upcoming

今後の

Meaning

about to happen or appear

Example

The upcoming event will be held next week.

今後のイベントは来週行われます。

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。

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。

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。

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 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。

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。

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。

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。

B1 adjective /ʌnɪmˈplɔɪd/

Unemployed

失業中

Meaning

without a job; not having paid work

Example

He has been unemployed for six months now.

彼はすでに6ヶ月間失業しています。

B1 adjective /ˌʌndərˈstændəbl/

understandable

理解できる

Meaning

Able to be understood; reasonable or justifiable.

Example

Her reaction was understandable given the situation.

その反応は状況を考慮すると理解できるものでした。

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 /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 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。

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。

B1 verb /ʌnˈpæk/

unpack

荷解きする

Meaning

to remove items from a container; to explain or analyze something in detail

Example

After arriving home, she began to unpack her suitcase.

家に着いた後、彼女はスーツケースの荷解きを始めた。

B1 adjective /ʌnˈlaɪk/

Unlike

異なる; 類似していない

Meaning

different from; not similar to

Example

Unlike his brother, he prefers quiet activities.

彼の兄とは異なり、彼は静かな活動を好む。

B1 adjective /ʌnˈeɪ.bəl/

Unable

できない

Meaning

lacking the power, skill, or means to do something

Example

He was unable to attend the meeting.

彼は会議に出席できませんでした。

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。

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。

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。

B1 adverb /ʌnˈjuːʒuəli/

unusually

異常に

Meaning

in a way that is not typical or expected; to an uncommon degree

Example

It was unusually cold for this time of year.

この時期にしては異常に寒かった。

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。

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 /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。

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。

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。