C1 noun əˈblɪv.i.ən

oblivion

忘却, 破壊, 消失

Meaning

The state of being unaware or unconscious of what is happening; complete forgetfulness.

Example

His name faded into oblivion over time.

彼の名前は時と共に忘却の中に消えた。

B2 noun oʊˈbiː.sə.t̬i

obesity

肥満

Meaning

The condition of being grossly fat or overweight.

Example

Obesity increases the risk of diabetes and heart disease.

肥満は糖尿病と心臓病のリスクを高めます。

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。

C1 verb /ˌaʊtˈstrɛtʃ/

outstretch

外に伸ばす

Meaning

To extend or stretch something outward.

Example

He outstretched his hand to help her up.

彼は彼女を助けるために手を差し出した。

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.

C2 adjective /ˈɔːrəˌtʌnd/

orotund

豊かで明確な声

Meaning

full, rich, and clear in sound; pompous in style

Example

The actor's orotund voice filled the theater.

俳優の豊かな声が劇場に響き渡った。

C1 verb /aʊtˈlɪv/

outlive

より長生きする

Meaning

to live longer than someone or something else

Example

She outlived all her siblings.

彼女はすべての兄弟姉妹より長生きしました。

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。

C2 verb /ˈoʊɡəl/

ogle

じっと見る

Meaning

To look at someone with obvious sexual interest.

Example

He kept ogling the models on the runway.

彼はランウェイのモデルたちを見続けた。

A2 adjective /ˈaʊtdɔːr/

outdoor

アウトドア

Meaning

situated, existing, or done outside a building

Example

We planned an outdoor picnic for the weekend.

週末のためにアウトドアピクニックを計画しました。

C2 noun /əbˈsɪdiən/

obsidian

オブシディアン (黒いガラスのような火山岩)

Meaning

A hard, dark, glasslike volcanic rock formed by rapid solidification of lava.

Example

The knife was made from sharp obsidian.

ナイフは鋭いオブシディアンで作られていた。

C2 adjective /ˈoʊ.vɔɪd/

ovoid

卵型

Meaning

egg-shaped; resembling an oval or ellipse

Example

The artist painted an ovoid shape in the center of the canvas.

アーティストはキャンバスの中央に卵型の形を描きました。

A1 adverb /wʌns/

Once

一度; 過去に

Meaning

one time only; at some time in the past; formerly

Example

I have been to Paris once in my life.

私は一度だけパリに行ったことがあります。

C1 adjective /ˌəʊvərˈstɪmjʊˌleɪtɪd/

overstimulated

Meaning

Excessively excited or aroused, overwhelmed by too much stimulus.

Example

Overstimulated minds can lead to burnout and decreased productivity.

C2 adjective /ɑːlˈfæktəri/

olfactory

Meaning

Relating to the sense of smell.

Example

The perfume activated her olfactory nerves immediately.

C1 verb /ˌoʊvərˈruːl/

overrule

却下する

Meaning

to reject or disallow by exercising one's superior authority; to override a decision

Example

The judge overruled the objection from the defense attorney.

裁判官は弁護側の異議を却下した。

C2 adjective /əbˈsiːkwɪəs/

obsequious

お世辞

Meaning

Excessively obedient or attentive in a servile way.

Example

The waiter gave an obsequious bow to every customer.

ウェイターは各顧客にお世辞のようなお辞儀をしました。

B2 noun /əˈpoʊ.nənt/

Opponent

対戦相手; ライバル

Meaning

a person who disagrees with or resists a proposal or practice; someone who competes against another

Example

The chess player defeated his strongest opponent.

チェスのプレーヤーは最強の対戦相手を倒した。

B2 noun /ɑːks/

Ox

雄牛

Meaning

a large strong animal used for pulling heavy loads or plowing fields

Example

The farmer used an ox to plow the field.

農夫は畑を耕すために雄牛を使いました。

A1 interjection /oʊ/

oh

オー

Meaning

used to express surprise, realization, or understanding

Example

Oh, I didn't know you were here!

オー、あなたがここにいるとは思わなかった！

C2 adjective /ˈɔːrnəri/

ornery

気難しい

Meaning

bad-tempered and combative; stubborn

Example

The ornery old man refused to leave his chair.

その気難しい老人は椅子を離れようとしませんでした。

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 adjective ˈɒptɪmaɪzd

optimized

最適化, 改善, より効率的

Meaning

Made as fully perfect, functional, or effective as possible; improved to achieve maximum efficiency.

Example

The system has been optimized for faster performance.

システムはより速いパフォーマンスのために最適化されました。

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。

B2 noun /ˈaʊtˌsɛt/

outset

開始

Meaning

the beginning or start of something

Example

From the outset, the project seemed ambitious but achievable.

最初から、プロジェクトは野心的だが達成可能に見えました。

B2 noun /ˈaʊt.saɪ.dər/

Out-sider

アウトサイダー

Meaning

a person who does not belong to a particular group; someone not accepted by a group

Example

As an outsider, he found it difficult to understand their traditions.

アウトサイダーとして、彼は彼らの伝統を理解するのが難しいと感じました。

B2 verb /oʊˈmɪt/

omit

省略する

Meaning

to leave out or exclude; to fail to include something

Example

Please don't omit any important details from your report.

レポートから重要な詳細を省略しないでください。

B2 noun /ˌɑb.lɪˈɡeɪ.ʃən/

Obligation

義務

Meaning

a duty or commitment; something that must be done legally or morally

Example

Parents have an obligation to care for their children.

親は子供の世話をする義務がある。

C1 adjective /ˈɒptɪkəl/

optical

光学的

Meaning

related to or used in seeing or sight

Example

The optical illusion fooled everyone at the exhibition.

その光学的錯覚は展示会で皆を騙した。

B2 adjective, verb /əbˈskjʊr/

obscure

不明確

Meaning

Not clearly expressed or understood; to make something difficult to see or understand.

Example

The meaning of the poem was obscure to most readers.

詩の意味はほとんどの読者には不明確でした。

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。

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 noun /ˈɒp.tɪ.mɪ.zəm/

optimism

楽観主義

Meaning

Hopefulness and confidence about the future or the successful outcome of something.

Example

Her optimism helped her overcome difficult times.

彼女の楽観主義は、困難な時期を乗り越える助けとなりました。

A2 noun /ˈoʊ.ʃən/

ocean

海洋

Meaning

A very large expanse of sea, especially the main areas of sea between continents.

Example

The ocean covers more than 70% of the Earth's surface.

海洋は地球の表面の70％以上を覆っています。

B2 noun /ɔːˈræŋ.ʊˌtæŋ/

Orang-Outang

オランウータン

Meaning

a large arboreal ape with long reddish hair, long arms, and hooked hands and feet, native to Borneo and Sumatra

Example

The orangutan swings gracefully through the forest canopy.

オランウータンは森の樹冠を優雅に渡ります。

C1 noun /ˈɑn.set/

Onset

開始; 始まり

Meaning

the beginning or early stages of something; the start of a medical condition

Example

The onset of winter brought heavy snowfall.

冬の開始は大雪をもたらしました。

C1 noun /ˈɔr.ə.kəl/

Oracle

オラクル

Meaning

a person regarded as a source of wise counsel; in ancient times, a priest or priestess acting as a medium

Example

The ancient Greeks consulted the oracle at Delphi.

古代ギリシャ人はデルポイのオラクルに相談しました。

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。

C2 verb /ˈɒsɪfaɪ/

ossify

骨化する

Meaning

to turn into bone or become rigid and inflexible

Example

With age, some tissues tend to ossify.

年を重ねると、一部の組織が骨化する傾向があります。

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。

C1 adjective /ˌoʊvərˈbɛrɪŋ/

overbearing

押しつけがましい

Meaning

unpleasantly or arrogantly domineering

Example

His overbearing attitude made everyone uncomfortable.

彼の押しつけがましい態度は、みんなを不快にさせた。

A1 adjective /oʊld/

old

古い

Meaning

having lived for a long time; not new or young

Example

He still drives his old car.

彼は今でも古い車を運転しています。

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。

C1 adjective /oʊˈvɜːrt/

overt

公然

Meaning

Done or shown openly; not hidden or secret.

Example

There was an overt display of hostility between the rivals.

ライバルの間に公然とした敵意の表れがあった。

B1 noun /ˌɒp.əˈtjuː.nə.ti/

opportunity

チャンス

Meaning

A favorable chance or set of circumstances that makes it possible to do something.

Example

She seized the opportunity to study abroad.

彼女は海外で勉強するチャンスをつかんだ。

C2 verb /ˌoʊvərˈliːp/

overleap

飛び越える

Meaning

To jump over something; to omit or disregard something.

Example

He managed to overleap the fence easily.

彼は簡単にフェンスを飛び越えました。

C2 noun /ˌɒn.əˌmæt.əˈpiː.ə/

onomatopoeia

オノマトペ

Meaning

The formation of a word from a sound associated with what is named.

Example

The word 'buzz' is an example of onomatopoeia.

'バズ'という言葉はオノマトペの一例です。

C1 adjective /ɒˈstɛnsəbl/

ostensible

見せかけの

Meaning

stated or appearing to be true, but not necessarily so

Example

His ostensible reason for leaving was illness, but many doubted it.

彼の出発の見せかけの理由は病気だったが、多くの人がそれを疑っていた。

C2 noun /əˈblɪkwɪti/

obliquity

歪み

Meaning

Deviation from moral or usual conduct; indirectness or lack of straightforwardness.

Example

The politician was criticized for the obliquity of his answers.

その政治家は、彼の答えの歪みについて批判された。

C1 noun /əbˈstrʌkʃən/

obstruction

障害

Meaning

Something that blocks or gets in the way; the action of obstructing.

Example

There was an obstruction on the railway track.

鉄道の線路に障害がありました。

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。

C2 verb /ˈɑːblɪˌɡeɪt/

obligate

強制する

Meaning

to bind legally or morally; to compel someone to do something

Example

The contract obligates the company to provide timely service.

契約は会社にタイムリーなサービスを提供することを義務付けます。

B2 noun/verb /ˈoʊvərˌdoʊs/

overdose

過剰摂取

Meaning

An excessive and dangerous amount of a drug; to take too much of a substance.

Example

He was rushed to the hospital after a drug overdose.

薬物の過剰摂取で病院に運ばれました。

C2 noun /ˈəʊpəs/

opus

創作作品

Meaning

A creative work, especially a large and important piece of music or art.

Example

The composer considered the symphony his greatest opus.

作曲家は交響曲を自分の最も偉大な創作作品と見なしていました。

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。

C1 verb /əˈfɪʃieɪt/

officiate

執り行う

Meaning

To perform official duties, especially in a ceremony or as a referee.

Example

The priest will officiate the wedding ceremony.

司祭が結婚式を司る。

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。

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。

A1 pronoun /aʊər/

our

私たちの

Meaning

belonging to or associated with the speaker and one or more other people

Example

This is our house.

これは私たちの家です。

C1 verb /ˌoʊvərˈpaʊər/

overpower

圧倒する

Meaning

To defeat or gain control over someone or something by using greater strength or force.

Example

The soldiers managed to overpower the enemy forces.

兵士たちは敵軍を圧倒することができました。

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。

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。

B2 noun /ˌɔː.ri.enˈteɪ.ʃən/

orientation

オリエンテーション

Meaning

the process of becoming familiar with a new situation or environment

Example

The company provides an orientation for all new employees.

会社はすべての新しい従業員にオリエンテーションを提供します。

A1 preposition, adverb /ˈoʊvər/

over

上に

Meaning

across, on top of, or beyond

Example

The book is lying over the table.

本はテーブルの上にあります。

C2 noun /ˌɒstɛnˈteɪʃən/

ostentation

見せびらかし

Meaning

excessive display of wealth or knowledge intended to attract admiration or envy

Example

The billionaire’s party was full of ostentation and luxury.

億万長者のパーティーは、見せびらかしと贅沢で満ちていた。

C2 noun /ˈɒkjʊlɪst/

oculist

眼科医

Meaning

An old-fashioned term for an eye doctor or ophthalmologist.

Example

The village oculist was known for treating various eye diseases.

村のオキュリストは、さまざまな目の病気を治療することで知られていました。

B2 noun /oʊˈbiː.di.əns/

Obedience

服従

Meaning

compliance with an order, request, or law; submission to authority

Example

Children should show obedience to their parents.

子供たちは両親に従うべきです。

C1 verb /ˈɒs.ɪ.leɪt/

oscillate

二つの点または状態の間で前後に動くまたは揺れる

Meaning

To swing or move back and forth between two points or states

Example

The stock market tends to oscillate during uncertain times.

株式市場は不確実な時期に振動しがちです。

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。

C1 noun ɔːrˈdiːl

ordeal

厳しい試練

Meaning

A physical or mental painful experience that must be endured

Example

Surviving the wilderness was a tough ordeal for them.

荒野で生き残ることは彼らにとって大変な試練でした。

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。

C1 noun /ˈɔɪntmənt/

ointment

軟膏

Meaning

A smooth, oily substance applied to the skin for healing or soothing.

Example

The doctor prescribed an ointment for the burn on his arm.

医師は彼の腕のやけどのために軟膏を処方しました。

B1 adjective /ˈaʊtər/

outer

外部

Meaning

situated on or toward the outside; external

Example

The outer layer of the jacket is waterproof.

ジャケットの外側の層は防水です。

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。

C1 verb /ˌoʊvərˈʃædoʊ/

overshadow

覆い隠す

Meaning

to appear more important or significant than something else, reducing its impact

Example

The scandal overshadowed his achievements.

スキャンダルは彼の業績を影にしました。

B2 adjective /ˈɒnɡəʊɪŋ/

ongoing

進行中

Meaning

continuing; still in progress

Example

The ongoing project will finish next month.

進行中のプロジェクトは来月終了します。

C1 noun /oʊˈeɪ.sɪs/

Oasis

オアシス

Meaning

a fertile spot in a desert where water is found; a pleasant refuge

Example

The travelers found an oasis after days in the desert.

旅行者たちは砂漠で数日後にオアシスを見つけました。

C1 verb /ˌoʊvərˈrʌn/

overrun

侵略する

Meaning

to spread over or occupy completely; to exceed a limit or time

Example

The garden was overrun with weeds.

庭は雑草に覆われていた。

B2 noun /ˈɔr.fən/

Orphan

孤児

Meaning

a child whose parents are dead; someone without protective support

Example

The orphan was adopted by a loving family.

その孤児は愛情深い家族に養子として迎えられました。

B1 adjective /ˌoʊvərˈweɪt/

overweight

過体重

Meaning

heavier than is considered healthy or normal

Example

The doctor advised him to lose weight as he was overweight.

医者は体重を減らすようにアドバイスしました、なぜなら彼は過体重だったからです。

C2 noun /ˌɒpəˈrɛtə/

operetta

軽いオペラ

Meaning

a short opera with light and humorous themes

Example

The theater staged a famous operetta by Gilbert and Sullivan.

劇場はギルバートとサリヴァンの有名な軽いオペラを上演しました。

C2 noun /oʊˈbleɪʃən/

oblation

奉納

Meaning

a religious offering, especially of bread or wine to God

Example

The priest placed the oblation on the altar during the ceremony.

司祭は儀式の間に祭壇に奉納を置きました。

C2 adjective /ˈoʊdiəs/

odious

忌まわしい

Meaning

extremely unpleasant or repulsive

Example

The dictator was remembered for his odious crimes.

その独裁者は彼の忌まわしい犯罪で記憶されました。

C1 adjective /ˌɒmnɪˈprezənt/

omnipresent

至る所に存在する

Meaning

(of God) present everywhere at the same time.

Example

Social media has become an omnipresent force in modern society.

ソーシャルメディアは現代社会において至る所に存在する力となりました。

C1 noun /ˈɑːlɪˌɡɑːrki/

oligarchy

寡頭政治

Meaning

A small group of people having control of a country, organization, or institution.

Example

The nation was ruled by a wealthy oligarchy that controlled all resources.

その国は裕福なオリガーキーによって支配され、すべての資源を支配していました。

C1 adjective ˈɒk.sɪ.də.tɪv

oxidative

酸化に関連する

Meaning

Related to or caused by oxidation, especially cellular damage from free radicals.

Example

Excess stress can lead to oxidative damage in cells.

過度のストレスは細胞に酸化的な損傷を引き起こす可能性があります。

C1 adjective /ˈɒptɪməm/

optimum

最適

Meaning

Most conducive to a favorable outcome; best.

Example

To achieve optimum results, we need to improve efficiency.

最適な結果を得るためには、効率を改善する必要があります。

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。

C2 noun /oʊˈbeɪsəns/

obeisance

敬意

Meaning

A gesture of respect such as a bow or curtsy.

Example

They bowed in obeisance to the king.

彼らは王に対して敬意を示すためにお辞儀をした。

A1 adjective/adverb /ˈoʊnli/

only

唯一

Meaning

without others; solely

Example

He is the only person who knows the secret.

彼はその秘密を知っている唯一の人です。

C1 adjective /ˈaʊt.kɑːst/

Outcast

社会的に排除された人

Meaning

rejected by society; excluded person

Example

He felt like an outcast in his new school.

彼は新しい学校でアウトキャストのように感じていた。

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。

C2 noun /əbˈstrʌkʃənɪst/

obstructionist

Meaning

a person who deliberately delays or prevents progress by being uncooperative or oppositional

Example

The obstructionist in the committee kept delaying the decision-making process.

C2 noun /ˈoʊ.vər.let/

Overlet

ベッドパッド

Meaning

a thin mattress or pad placed over a bed for additional comfort

Example

The overlet makes the bed more comfortable to sleep on.

オーバーレットはベッドをより快適にして眠りやすくします。

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 /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 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。

B2 adjective /aʊtˈstændɪŋ/

outstanding

優れた

Meaning

extremely good or impressive; not yet resolved or paid

Example

She received an award for her outstanding performance.

彼女は優れたパフォーマンスで賞を受賞しました。

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。

C2 noun /ˈoʊɡər/

ogre

Meaning

A mythical monster, often depicted as large, hideous, and cruel; metaphorically, a cruel or terrifying person.

Example

The villagers feared the ogre who lived in the dark forest.

C1 noun /oʊˈmɪʃ.ən/

Omission

省略; 除外

Meaning

the action of excluding or leaving out someone or something; a failure to include

Example

The omission of his name from the list was intentional.

リストから彼の名前を省略することは意図的でした。

C2 noun /ˈɒbsɪkwi/

obsequy

葬儀

Meaning

A funeral rite, usually used in plural form obsequies.

Example

The village gathered for the obsequy of their beloved teacher.

村人たちは、愛する教師の葬儀のために集まりました。

C1 verb ˈɔː.kɪ.streɪ.tɪd

orchestrated

精巧に組織された

Meaning

Planned or coordinated carefully and deliberately.

Example

The attacks were orchestrated with precision.

攻撃は正確に組織されていた。

C2 noun /ˌoʊpəˈlɛsəns/

opalescence

オパレスセンス

Meaning

a milky or pearly appearance of a surface like that of an opal

Example

The pearl had a gentle opalescence under the light.

パールは光の下で優しいオパレスセンスを持っていました。

C1 adjective /ˈɒptɪk/

optic

視覚の

Meaning

Relating to the eye or vision.

Example

The optic nerve carries signals from the eye to the brain.

視神経は目から脳に信号を伝達します。

C2 noun /ˈɑːbəlɪsk/

obelisk

オベリスク

Meaning

A tall, four-sided, narrow tapering monument with a pyramid-shaped top.

Example

The ancient Egyptians built obelisks to honor their gods.

古代エジプト人は神々を讃えるためにオベリスクを建てました。

B2 verb /əˈpoʊz/

oppose

反対する

Meaning

to disagree with or resist; to act against

Example

Many citizens oppose the new tax policy.

多くの市民が新しい税制政策に反対しています。

B2 noun /ˈoʊvərpæs/

overpass

高架橋

Meaning

A bridge that carries one road or railway over another.

Example

The new overpass reduced traffic congestion in the city.

新しい高架橋は市内の交通渋滞を減らしました。

C2 adjective /ˈɒfɪʃ/

offish

無愛想

Meaning

Unfriendly, distant, or reserved in manner.

Example

He seemed offish at the party and avoided most conversations.

彼はパーティーで無愛想に見え、大半の会話を避けていました。

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 adverb /ˈɒp.tɪ.məl.i/

optimally

最適に

Meaning

In the most effective or efficient way possible.

Example

Tasks should be allocated optimally for maximum output.

タスクは最大の成果を上げるために最適に割り当てるべきです。

C1 adjective /ɔːˈneɪt/

ornate

華やかな

Meaning

elaborately or highly decorated

Example

The palace hall was filled with ornate furniture and paintings.

宮殿のホールは華やかな家具と絵画でいっぱいだった。

A1 adjective /oʊˈkeɪ/

ok

わかった

Meaning

used to indicate agreement, approval, or understanding

Example

Okay, let's go to the park.

わかった、じゃあ公園に行こう。

B1 adjective /əˈfɪʃəl/

official

公式

Meaning

relating to or connected with an authority or public office

Example

He is the official spokesperson for the company.

彼は会社の公式なスポークスマンです。

C1 adjective /əˈbliːk/

Oblique

斜め; 対角線; 間接的または回避的

Meaning

slanting; diagonal; indirect or evasive

Example

The artist drew an oblique line across the canvas.

アーティストはキャンバスに斜めの線を描いた。

C2 verb /ˈɑːskjʊleɪt/

osculate

キスする

Meaning

To kiss.

Example

They osculated under the mistletoe during the party.

彼らはパーティーの時にヤドリギの下でキスをしました。

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。

B1 noun /əˈpɪn.jən/

Opinion

意見

Meaning

a view or judgment formed about something; a belief or assessment based on grounds short of proof

Example

In my opinion, this is the best solution.

私の意見では、これは最良の解決策です。

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。

A2 adjective /ɒd/

Odd

奇妙な; 異常な; 正常または予想されるものとは異なる

Meaning

strange; unusual; different from what is normal or expected

Example

That's an odd way to solve the problem.

それは問題を解決する奇妙な方法です。

B1 verb /oʊ/

owe

借りがある

Meaning

to be under obligation to pay or repay; to be indebted

Example

I owe my success to my parents' support.

私は両親の支援のおかげで成功しました。