B1 adjective /ˈɔːɡənaɪzd/

organized

組織的な

Meaning

Arranged in a systematic way, especially on a large scale.

Example

An organized approach to work increases productivity and reduces stress.

仕事に対する組織的なアプローチは、生産性を高め、ストレスを減らします。

B1 noun ˌɒpəˈtjuːnɪtiz

opportunities

チャンス

Meaning

A set of circumstances that makes it possible to do something; chances for advancement or success.

Example

Opportunities for jobs decreased.

仕事のチャンスが減少しました。

A1 pronoun /aʊərz/

ours

私たちの

Meaning

belonging to or associated with us

Example

This victory is ours.

この勝利は私たちのものです。

C1 adjective /əˈblɪɡ.ə.tɔː.ri/

obligatory

義務的

Meaning

Required by a legal, moral, or other rule; compulsory.

Example

Wearing a seatbelt is obligatory in most countries.

ほとんどの国でシートベルトを着用することは義務です。

B2 adjective ˌɒp.ərˈeɪ.ʃən.əl

operational

運用可能

Meaning

In working order; ready for use.

Example

The space project will be operational by 2025.

宇宙計画は2025年までに運用可能になります。

B2 adverb /ˈoʊpənli/

Openly

率直に; 公然と

Meaning

in a frank and honest way; without concealment; publicly

Example

She spoke openly about her struggles with mental health.

彼女はメンタルヘルスの問題についてオープンに話した。

C1 verb /ˌaʊtˈweɪ/

outweigh

より重要である

Meaning

To be more important, valuable, or significant than something else.

Example

The benefits of the new policy outweigh the risks.

新しい政策の利益はリスクを上回っています。

C2 noun /əˈprəʊ.bri.əm/

opprobrium

非難, 恥辱

Meaning

Harsh criticism or public disgrace.

Example

The scandal brought opprobrium on the politician.

スキャンダルは政治家に非難を浴びせた。

C2 adjective /əˈrækjələr/

oracular

神託のような

Meaning

Resembling an oracle; giving wise, mysterious, or prophetic statements

Example

Her oracular words left the audience deep in thought.

彼女の神託のような言葉は、観客を深く考えさせた。

C1 noun /ˌɑːk.sɪˈmɔːr.ɒn/

oxymoron

オキシモロン

Meaning

a figure of speech where two contradictory terms are combined

Example

The phrase 'deafening silence' is a classic oxymoron.

「耳をつんざくような静けさ」というフレーズは、典型的なオキシモロンです。

B2 noun /ˈoʊ.dər/

Odour

臭い

Meaning

a distinctive smell, especially an unpleasant one

Example

The odour of fresh bread filled the kitchen.

新鮮なパンの臭いがキッチンに広がった。

C1 adjective /ˌaʊtˈlændɪʃ/

outlandish

奇妙

Meaning

Looking or sounding bizarre or unfamiliar; strange.

Example

He wore an outlandish costume to the festival.

彼は祭りに奇妙な衣装を着ていました。

A1 conjunction /ɔːr/

or

または

Meaning

used to link alternatives

Example

You can have tea or coffee.

お茶かコーヒーをお選びいただけます。

B2 adverb /əˈfɪʃəli/

officially

公式に

Meaning

in a formal or authorized way

Example

The building was officially opened by the mayor.

その建物は市長によって公式に開かれました。

C1 verb /ˌoʊvərˈθroʊ/

overthrow

幸せ

Meaning

To remove a leader or government from power, often by force.

Example

The rebels planned to overthrow the corrupt regime.

彼女は賞を受け取ったとき、幸せを隠すことができなかった。

B2 noun /ˈɒpəreɪtər/

operator

オペレーター

Meaning

a person who operates equipment, a business, or controls something

Example

The machine operator ensured that everything ran smoothly.

機械オペレーターは、すべてがスムーズに動作することを確認しました。

A2 noun /əˈlɪmpɪks/

olympics

オリンピック競技大会

Meaning

an international sports competition held every four years with athletes from many countries

Example

The Olympics bring athletes from all over the world together.

オリンピックは世界中のアスリートを一堂に集めます。

A1 adverb /aʊt/

out

外

Meaning

moving or appearing away from the inside or center; not at home or present

Example

He stepped out of the room quietly.

彼は静かに部屋を出ました。

A1 preposition /ʌv/

of

の

Meaning

expressing the relationship between a part and a whole

Example

The book is on the table, in front of the window.

本はテーブルの上にあり、窓の前にあります。

B2 verb /əˈfend/

offend

侮辱する

Meaning

to cause displeasure or resentment; to hurt someone's feelings

Example

His rude comments offended many people at the meeting.

彼の無礼なコメントは会議で多くの人々を怒らせました。

C1 noun /ˈɒf.sprɪŋ/

offspring

子孫

Meaning

a person's child or children; an animal's young

Example

The bird carefully fed its offspring.

その鳥は注意深く自分の子孫に餌を与えました。

B2 noun /ˈaʊtɪŋ/

outing

お出かけ

Meaning

a short trip or excursion, often for leisure or enjoyment

Example

They had a lovely outing at the beach last weekend.

彼らは先週末、ビーチで素晴らしいお出かけをしました。

C2 adjective /əˈprəʊ.bri.əs/

opprobrious

侮辱的な

Meaning

Expressing strong criticism or scorn.

Example

He made opprobrious remarks about his opponent.

彼は対戦相手に対して侮辱的な発言をしました。

C1 adjective /əˈblaɪdʒɪŋ/

obliging

親切な

Meaning

Willing to help or do favors; accommodating.

Example

The staff at the hotel were very obliging and friendly.

ホテルのスタッフはとても親切で友好的でした。

C2 adjective /ˈɒpjʊlənt/

opulent

豪華な

Meaning

Ostentatiously rich, luxurious, or lavish.

Example

They hosted an opulent wedding with gold decorations.

彼らは金色の装飾を施した豪華な結婚式を開催しました。

C1 noun /ˈɔːrdɪnəns/

ordinance

条例

Meaning

An authoritative rule, law, or decree issued by a city, town, or authority.

Example

The city council passed an ordinance banning smoking in public parks.

市議会は公共公園での喫煙を禁じる条例を可決しました。

C1 noun /ˈaʊtriːtʃ/

outreach

支援拡大

Meaning

The act of providing services or support to people who might not otherwise have access to them.

Example

The charity launched a new outreach program for the homeless.

チャリティはホームレスのために新しい支援拡大プログラムを開始しました。

C1 adjective /ˌɔːrnəˈmɛntl/

ornamental

装飾的な

Meaning

Serving as decoration; decorative rather than functional.

Example

The garden was filled with ornamental plants.

庭は装飾的な植物でいっぱいだった。

B2 adverb /ˈaʊtraɪt/

Outright

直接に; 完全に; ためらわずに

Meaning

completely; directly; without reservation or concealment

Example

She rejected the proposal outright.

彼女はその提案を直接拒否した。

B2 noun /ˈaʊtˌfɪt/

outfit

衣装

Meaning

A set of clothes worn together, often for a particular occasion.

Example

She wore a beautiful outfit to the party.

彼女はパーティーに美しい衣装を着て行った。

C1 noun /ˈɒstrəsɪzəm/

ostracism

追放

Meaning

The act of excluding someone from a group or society.

Example

The student faced ostracism after breaking the rules.

その学生は規則を破った後、追放に直面しました。

B2 noun /ˈoʊ.vər ɡroʊθ/

Over growth

過剰成長

Meaning

excessive growth beyond normal size; too much development or expansion

Example

The overgrowth of weeds made the garden look untidy.

雑草の過剰な繁茂が庭を乱雑に見せた。

C1 adjective /əbˈzɜːrvənt/

Observant

観察力のある

Meaning

quick to notice things; watchful; attentive

Example

The observant detective noticed every small detail at the crime scene.

観察力のある探偵は犯罪現場のあらゆる小さな詳細に気づきました。

B1 adjective /ˌoʊvərˈsiːz/

overseas

海外

Meaning

in or to a foreign country across the sea

Example

He went overseas for higher education.

彼は高等教育のために海外に行った。

B2 noun /wʌn θɜːd/

one-third

三分の一

Meaning

one part of something that is divided into three equal parts

Example

One-third of the class was absent today.

クラスの三分の一が今日は欠席でした。

C1 adjective /əˈprɛs.ɪv/

Oppressive

抑圧的

Meaning

Harsh and authoritarian; overwhelming; causing distress; tyrannical;

Example

The oppressive heat made it difficult to work outside during the summer.

厳しい暑さは夏の間外で働くのを難しくした。

C2 noun /ˈɔːrdnəns/

ordnance

軍需品

Meaning

Military supplies including weapons, ammunition, and combat equipment.

Example

The army stored ordnance in a secure facility outside the city.

軍隊は都市外の安全な施設に軍需品を保管していた。

C1 noun /ɒpˈtɒmɪtrɪst/

optometrist

オプトメトリスト

Meaning

A healthcare professional who examines eyes and prescribes corrective lenses.

Example

The optometrist prescribed new glasses for her.

オプトメトリストは彼女に新しい眼鏡を処方しました。

A2 noun /ˈʌn.jən/

Onion

玉ねぎ

Meaning

a round vegetable with a strong taste and smell, made up of many layers

Example

I need to chop some onions for the curry recipe.

カレーのレシピのためにいくつか玉ねぎを切る必要があります。

B2 noun /ˈaʊt.laɪn/

Outline

アウトライン; 概要; 計画

Meaning

a general description or plan showing the essential features of something; the main points

Example

The teacher provided an outline of the course syllabus.

先生はコースのアウトラインを提供しました。

B1 noun /ˌɑk.jəˈpeɪ.ʃən/

Occupation

職業; 仕事; 占領

Meaning

a job or profession; the action of taking control of a place

Example

Teaching is her chosen occupation.

教えることは彼女の選んだ職業です。

C1 noun /ˈɒktəɡən/

octagon

八角形

Meaning

A polygon with eight sides and eight angles.

Example

The stop sign is shaped like an octagon.

ストップサインは八角形をしています。

C1 adjective /əˈkʌlt/

occult

オカルト

Meaning

Relating to mysterious, supernatural, or magical powers and practices.

Example

She had always been fascinated by the occult and its hidden knowledge.

彼女は常にオカルトとその隠された知識に魅了されていた。

C1 noun ˌɒb.səˈlɛs.əns

obsolescence

陳腐化

Meaning

The process of becoming obsolete or outdated and no longer used.

Example

The rapid advancement of technology leads to the obsolescence of old devices.

テクノロジーの急速な進歩は古いデバイスの陳腐化を引き起こします。

C2 adjective /ˌɒbsəˈlɛsnt/

obsolescent

時代遅れの

Meaning

Becoming outdated or on the way to becoming obsolete.

Example

The obsolescent technology could not compete with modern devices.

時代遅れの技術は現代のデバイスには競争できなかった。

C1 noun /əˈpreʃ.ən/

Oppression

抑圧; 虐待; 圧政;

Meaning

cruel or unjust treatment or exercise of authority; the state of being subject to harsh treatment

Example

The people fought against political oppression.

人々は政治的な抑圧に反対して戦った。

C1 noun /ˈɒn.slɔːt/

onslaught

猛攻

Meaning

A fierce or destructive attack.

Example

The village faced an onslaught of enemy forces.

その村は敵軍の猛攻に直面しました。

C1 verb /əbˈsɛs/

obsess

Meaning

To preoccupy or fill the mind of someone continually and to an excessive degree.

Example

She tends to obsess over small details.

C1 adjective /ɒmˈnɪv.ər.əs/

Omnivorous

雑食性

Meaning

eating both plants and animals; feeding on various kinds of food

Example

Bears are omnivorous animals that eat both plants and meat.

クマは雑食性の動物で、植物と肉を食べます。

C1 adjective /ˈɔːrθədɑːks/

orthodox

Meaning

conforming to traditional beliefs or practices

Example

He comes from a very orthodox family.

Meaning

Excessively excited or aroused, overwhelmed by too much stimulus.

Example

Overstimulated minds can lead to burnout and decreased productivity.

B2 noun /ɔːrˈɡæn.ɪk ˈfɑːr.mɪŋ/

organic farming

有機農業

Meaning

Farming method that avoids synthetic chemicals and fertilizers, using natural methods instead.

Example

Organic farming improves soil health and reduces pollution.

オーガニックファーミングは土壌の健康を改善し、汚染を減らします。

B1 verb /ˈɒpəreɪt/

operate

操作する

Meaning

to function; to control or manage; to perform surgery

Example

The surgeon will operate on the patient tomorrow.

外科医は明日患者を手術します。

C2 noun ˈɒpjʊləns

opulence

富裕

Meaning

Great wealth or luxuriousness.

Example

The opulence of the mansion was evident in its ornate furnishings.

豪邸の富裕さはその華やかな家具に明らかでした。

A1 adjective /əʊˈkeɪ/

okay

大丈夫

Meaning

used to express agreement or acceptance

Example

It's okay to leave early today.

今日は早く帰るのは大丈夫です。

A2 noun /ˈɒf.ɪs/

office

オフィス

Meaning

a room or building where people work, usually at desks

Example

She left the office early to attend a family event.

彼女は家族のイベントに出席するために早くオフィスを出ました。

B1 verb /ˈɒpəreɪtɪŋ/

operating

運営する

Meaning

to control or manage the functioning of something

Example

The company has been operating in this market for five years.

その会社はこの市場で5年間運営されています。

B2 noun ˈəʊ.və.hed

overhead

間接費

Meaning

Ongoing business expenses not directly attributable to creating a product or service.

Example

The company reduced its overhead to increase profits.

会社は利益を増やすために間接費を削減した。

B2 verb /əbˈteɪn/

obtain

取得する

Meaning

to get or acquire something

Example

You need to obtain a visa before traveling abroad.

あなたは海外に行く前にビザを取得する必要があります。

C1 verb /əˈprɛs/

oppress

抑圧する

Meaning

to keep someone down by harsh and unfair use of authority; to suppress

Example

The dictator oppressed the people for decades.

独裁者は何十年も人々を抑圧した。

C2 noun /ˈɒlɪv brɑːntʃ/

olive-branch

オリーブの枝

Meaning

A symbol of peace or reconciliation; an offer to end conflict.

Example

He extended an olive-branch to his rival after years of hostility.

彼は長年の敵対後、ライバルにオリーブの枝を差し出した。

A2 adjective /əˈlɪmpɪk/

olympic

オリンピック

Meaning

related to the Olympic Games, a major international sporting event

Example

She trained hard to compete in the Olympic Games.

彼女はオリンピックに出場するために一生懸命トレーニングをしました。

C2 noun /ˌɔːrəˈtɔːri.oʊ/

oratorio

宗教音楽作品

Meaning

A large-scale musical composition for orchestra, choir, and soloists, usually on a sacred theme, performed without costumes or scenery.

Example

Handel's 'Messiah' is one of the most famous oratorios ever written.

ヘンデルの『メサイア』は最も有名なオラトリオの1つです。

C2 noun /ˈoʊ.kəm/

oakum

古いロープの繊維

Meaning

loose fibers obtained by untwisting old ropes, used for caulking ships

Example

The shipbuilders used oakum to seal the gaps in the wooden planks.

船大工たちは木の板の隙間を塞ぐためにオーカムを使いました。

A1 preposition /ɒn/

on

上

Meaning

physically in contact with and supported by a surface

Example

The book is on the table.

本はテーブルの上にあります。

C2 adjective /ˈəʊ.dər.əs/

Odorous

芳香のある; 香り高い

Meaning

having a strong smell; fragrant; aromatic

Example

The garden was filled with odorous flowers.

庭は芳香のある花で満たされていた。

B2 noun /əˌrɪʒ.əˈnæl.ə.ti/

Originality

独創性

Meaning

the quality of being novel or unusual; the ability to think independently and creatively

Example

The artist's work showed great originality and creativity.

アーティストの作品は大きな独創性と創造性を示した。

C1 noun /əˈkɜr.əns/

Occurrence

出来事

Meaning

an instance or event of something happening; the fact of occurring

Example

The occurrence of earthquakes is common in this region.

この地域では地震の出来事が一般的です。

C1 adjective /əbˈstrʌk.tɪv/

Obstructive

妨害的な

Meaning

deliberately creating difficulties or preventing progress; hindering or blocking something

Example

The obstructive policies hindered economic growth.

妨害的な政策は経済成長を阻害した。

B2 noun /əˈfɛns/

offense

犯罪

Meaning

an illegal act; a crime

Example

The offense was committed in broad daylight.

その罪は昼間に犯されました。

A2 adjective /ˈɑp.ə.zɪt/

Opposite

反対の; 完全に異なる; 向かい合っている; 逆の;

Meaning

Contrary; completely different; facing each other; reverse;

Example

They have opposite views on politics but remain good friends.

彼らは政治に関して対立した見解を持っていますが、良い友達のままです。

C2 noun /ˌɒktədʒəˈnɛəriən/

octogenarian

80歳代の人

Meaning

A person who is between 80 and 89 years old.

Example

The octogenarian still jogs every morning to stay healthy.

そのオクトジェネリアンは毎朝健康を維持するためにジョギングをしています。

B2 noun ˈaʊt.pʊt

output

生産量

Meaning

The amount of something produced by a person, machine, or industry.

Example

Climate change reduces agricultural output.

気候変動は農業の生産量を減少させます。

B2 noun /əˈfens/

Offence

違反; 犯罪

Meaning

a breach of law or rule; an annoyance or resentment

Example

Stealing is a serious offence punishable by law.

窃盗は法律で罰せられる重大な違反です。

B2 noun /oʊk/

oak

オークの木

Meaning

a large tree that produces acorns and has strong, hard wood

Example

The old oak tree provided shade for the entire yard.

古いオークの木は庭全体に日陰を提供しました。

C1 adjective /ˌɒbsəˈliːt/

obsolete

時代遅れ

Meaning

No longer in use or out of date.

Example

Floppy disks are now completely obsolete.

フロッピーディスクは現在完全に時代遅れです。

B1 noun /ˈɔːfɪsər/

officer

警官

Meaning

a person in a position of authority, especially in law enforcement

Example

The officer gave him a ticket for speeding.

警官はスピード違反で彼にチケットを渡した。

C1 noun /ˌɑːsɪˈleɪʃən/

oscillation

振動

Meaning

The movement back and forth at a regular speed.

Example

The oscillation of the pendulum controls the clock.

振り子の振動が時計を制御します。

C1 noun /əbˈdʒɛktər/

objector

反対者

Meaning

a person who expresses opposition or disapproval to something

Example

The objector raised his concerns during the town meeting.

反対者は市議会の会議中に自分の懸念を表明しました。

C1 noun /əbˈzɜːvəns/

observance

遵守

Meaning

The practice of following a custom, rule, or religious law.

Example

The festival is held in observance of a centuries-old tradition.

その祭りは、数世代にわたる伝統を遵守して行われます。

C1 verb /uːz/

ooze

にじみ出る

Meaning

to slowly flow or leak out through small openings or pores

Example

Blood began to ooze from the small cut.

血が小さな切り傷からにじみ出た。

C2 verb /əˈkluːd/

occlude

閉塞する

Meaning

To block or close up an opening or passage.

Example

The pipe was occluded by mineral deposits.

パイプは鉱物の堆積物で閉塞されていました。

C2 verb /ˌaʊtməˈnuːvər/

outmaneuver

巧妙に出し抜く

Meaning

to gain an advantage over an opponent by skillful or clever action

Example

The smaller company managed to outmaneuver its larger rival.

小さな会社は大きな競争相手を巧妙に出し抜くことに成功した。

B1 noun ˌɔː.ɡən.aɪˈzeɪ.ʃənz

organizations

組織

Meaning

Organized groups of people with a particular purpose

Example

Organizations play a key role in policymaking.

組織は政策形成において重要な役割を果たします。

C2 verb /əbˈtruːd/

obtrude

押し付ける

Meaning

to force oneself or one's ideas into a situation uninvited or inappropriately

Example

He didn’t want to obtrude into their private conversation.

彼は彼らのプライベートな会話に押し付けたくなかった。

A2 noun /ɔɪl/

Oil

油

Meaning

a viscous liquid derived from petroleum or plants, used for cooking or fuel

Example

Heat the oil in a pan before adding the vegetables.

野菜を加える前にフライパンで油を温めます。

C2 noun /ɔːˈreɪʃən/

oration

演説

Meaning

A formal speech, especially one given on a ceremonial occasion

Example

The president delivered an inspiring oration.

大統領は感動的な演説を行いました。

B2 verb /ˌoʊvərˈiːt/

overeat

幸福

Meaning

To eat more food than the body needs.

Example

She tends to overeat when she is stressed.

彼女は賞を受け取ったとき、喜びを隠すことができませんでした。

C1 adjective /ˈɔːrdɪnəl/

ordinal

順序数

Meaning

Relating to the order or position of something in a sequence (first, second, third, etc.).

Example

The ordinal number 'third' indicates position in a sequence.

'第三'の順序数は、順番での位置を示します。

B1 verb /ˈɔːrɡənaɪz/

organize

整理する

Meaning

to arrange systematically; to plan and coordinate

Example

She organized a surprise party for her friend.

彼女は友達のためにサプライズパーティーを企画した。

C2 noun /ˌɔːrnɪˈθɒlədʒɪst/

ornithologist

鳥類学者

Meaning

a scientist who studies birds

Example

The ornithologist spent years studying migratory birds.

そのオルニソロジストは渡り鳥を研究するために何年も費やしました。

C1 noun ˈaʊt.sɔːr.sɪŋ

outsourcing

アウトソーシング

Meaning

The practice of having certain job functions done outside a company instead of having an in-house department or employee handle them.

Example

Many companies use outsourcing to reduce labor costs.

多くの企業はコスト削減のためにアウトソーシングを利用しています。

B1 adjective /ˌoʊld ˈfæʃənd/

old-fashioned

昔風の

Meaning

not modern; belonging to an earlier time

Example

He still wears an old-fashioned hat.

彼は今でも昔風の帽子をかぶっています。

C2 adjective /ˈɒkjʊlər/

ocular

眼科の

Meaning

Relating to the eye or vision.

Example

The patient was referred to a specialist for ocular treatment.

患者は眼科専門医に紹介されました。

B2 verb /əˈrɪdʒɪneɪt/

originate

起源する

Meaning

to come into existence; to begin; to create or produce

Example

The tradition originated in ancient times.

その伝統は古代の時代に起源を持っています。

C1 noun /ˈaʊtpoʊst/

outpost

前哨基地

Meaning

A small military camp or position at some distance from the main force, used especially as a guard.

Example

The soldiers were stationed at a remote outpost.

兵士たちは遠隔地の前哨基地に配置されました。

C1 adjective /ˈɑp.ər.ə.tɪv/

Operative

作動中の; 効力を持つ; 仕事をしている; 操作可能な;

Meaning

Functioning; in effect; working; active;

Example

The new safety protocols became operative immediately after the accident.

新しい安全プロトコルは事故後すぐに作動しました。

C2 verb /ˈɔːreɪt/

orate

演説する

Meaning

To speak in a formal, often pompous manner

Example

He began to orate at the ceremony.

彼は式で演説を始めました。

B2 noun /ɒdz/

odds

確率

Meaning

the likelihood or probability of something happening; chances for or against something

Example

The odds of winning the lottery are very low.

宝くじに当選する確率は非常に低いです。

C1 verb /ˌaʊtˈstrɪp/

outstrip

凌駕する

Meaning

To go faster or do better than someone or something; to surpass.

Example

The company outstripped its competitors in sales last year.

その会社は昨年、販売で競合他社を上回った。

A1 noun /ɒkˈtoʊbər/

october

10月

Meaning

the tenth month of the year in the Gregorian calendar

Example

The weather becomes cooler in October.

10月になると天気が涼しくなります。

C1 verb ˈɔːr.kɪ.streɪt

orchestrate

調整する

Meaning

To plan or coordinate the elements of (a situation) to produce a desired effect, especially surreptitiously.

Example

He skillfully orchestrated the entire event.

彼は巧妙に全体のイベントを調整しました。

C2 adjective /ɔːrˈθɑːɡənl/

orthogonal

直交

Meaning

at right angles; independent or unrelated

Example

In mathematics, two vectors are orthogonal if their dot product is zero.

数学では、2つのベクトルが直交している場合、そのドット積はゼロです。

C1 adjective /əbˈtjuːs/

Obtuse

鈍い; 理解が遅い; 愚か

Meaning

annoyingly insensitive or slow to understand; lacking in intelligence or perception

Example

He was being deliberately obtuse about the instructions.

彼は指示に関して意図的に鈍かった。

B2 verb /ˌoʊvərˈpeɪ/

overpay

過剰に支払う

Meaning

To pay more than is necessary or reasonable.

Example

She realized she had overpaid for the concert tickets.

彼女はコンサートのチケットに多く支払ったことに気づきました。

B2 verb /ˌoʊvərˈwɛlm/

overwhelm

Meaning

to overpower someone emotionally or physically; to be too much to handle

Example

She was overwhelmed with gratitude after receiving the help.

B2 adjective /ˈɔɪl.i/

Oily

油っぽい; 油で覆われた; 脂っこい

Meaning

covered with oil; containing oil; greasy

Example

Her oily skin needs special care.

彼女の油っぽい肌は特別なケアが必要です。

海洋酸性化

Meaning

The ongoing decrease in the pH of the Earth's oceans, caused by the absorption of carbon dioxide from the atmosphere.

Example

Ocean acidification is caused by atmospheric CO2 absorption.

海洋酸性化は、大気中のCO2の吸収によって引き起こされます。