C1 verb /ˈrʌf.l̩/

ruffle

Meaning

to disturb the smoothness of something; to annoy or upset someone

Example

The wind ruffled her hair.

B2 noun, verb /ˈrætəl/

rattle

ガタガタ鳴る；ガラガラ

Meaning

to make a rapid series of short, sharp sounds; a device or object that makes such a sound

Example

The loose window began to rattle in the strong wind.

強い風で緩んだ窓がガタガタ鳴り始めた。

C1 adjective /ˌrɛprɪzɛnˈteɪʃənl̩/

representational

表現的

Meaning

Relating to or depicting something in a realistic or symbolic way.

Example

The artist preferred a representational style of painting.

アーティストは表現的な絵画スタイルを好んでいました。

C1 adjective /rɪˈbel.jəs/

Rebellious

反抗的な; 不従順な; 権威に反発する;

Meaning

defying authority; resisting control; disobedient;

Example

The rebellious teenager refused to follow his parents' rules.

反抗的なティーンエイジャーは、両親の規則に従うことを拒否した。

A2 verb /rɪˈplaɪ/

reply

返事する

Meaning

to give an answer; to respond

Example

She replies to emails quickly.

彼女はすぐにメールに返信します。

B1 noun /ˌrɛp.jʊˈteɪ.ʃən/

reputation

評判, 名声

Meaning

The opinion generally held about someone or something; fame or prestige.

Example

A good reputation is essential for business success.

良い評判はビジネスの成功に不可欠です。

C1 adjective /rɪˈtɔːrɪkəl/

rhetorical

修辞的

Meaning

relating to the art of effective or persuasive speaking or writing; often a question asked to make a point rather than get an answer

Example

He asked a rhetorical question during the debate.

彼は討論中に修辞的な質問をした。

B1 verb /rɪˈleɪt/

relate

rapport

関係

Meaning

A close and harmonious relationship in which the people or groups concerned understand each other's feelings or ideas.

Example

The teacher built a strong rapport with her students.

教師は生徒と強い関係を築いた。

B2 noun /rɪˈsɪp.i.ənt/

Recipient

受取人

Meaning

a person who receives something

Example

She was the recipient of the prestigious award.

彼女はその名誉ある賞の受取人でした。

A2 noun /rent/

Rent

幸せ

Meaning

a payment made periodically by a tenant to a landlord for use of property

Example

The monthly rent for this apartment is quite affordable.

彼女は賞を受け取ったとき、自分の幸せを隠すことができませんでした。

C2 adjective /rɪˈdjuːsəbl̩/

reducible

Meaning

capable of being simplified, lessened, or made smaller

Example

The problem is complex but reducible to a few basic principles.

B2 noun /rɛlm/

realm

Meaning

A kingdom or domain; a field or area of activity or interest.

Example

He is well known in the realm of science.

C2 noun /ˈriːbəs/

rebus

なぞなぞ

Meaning

a puzzle in which words are represented by pictures, symbols, or letters

Example

The children enjoyed solving the rebus puzzles in the magazine.

子供たちは雑誌のなぞなぞを解くのを楽しみました。

C2 verb /rɪˈspaɪər/

respire

呼吸する

Meaning

To breathe in and out; to inhale and exhale.

Example

Plants also respire to release energy.

植物もエネルギーを放出するために呼吸します。

B2 adjective /ˈrʌs.ti/

Rusty

錆びた; 練習不足; 最近の練習不足による障害

Meaning

affected by rust; out of practice; impaired by lack of recent practice

Example

My piano skills are rusty after not playing for years.

何年もピアノを弾いていなかったので、私のピアノのスキルは錆びついています。

C2 noun /roʊˈtʌn.də.ti/

rotundity

円形

Meaning

the quality of being round or plump

Example

The rotundity of the balloon made it float gracefully.

風船の円形がそれを優雅に浮かせた。

C1 verb /rɪˈvɜːrbəreɪt/

reverberate

反響する

Meaning

To echo repeatedly or have continuing effects.

Example

The sound of the explosion reverberated through the valley.

爆発音は谷を通り過ぎて反響しました。

A2 verb /riːtʃ/

reach

到達する

Meaning

to arrive at a destination; to extend one's arm to touch something

Example

We will reach the station in ten minutes.

私たちは10分以内に駅に到着します。

C2 noun /ruːˈeɪ/

roue

感覚的な楽しみを追い求める男

Meaning

A man devoted to a life of sensual pleasure; a debauched man.

Example

The old roue squandered his fortune on gambling and women.

年老いたルーエはギャンブルと女性に財産を浪費した。

A2 noun /ˈroʊbɒt/

robot

ロボット

Meaning

a machine capable of carrying out a complex series of actions automatically

Example

The factory uses robots to assemble cars efficiently.

工場はロボットを使って効率的に車を組み立てています。

C1 noun /ˈrem.nənt/

Remnant

残留物

Meaning

a small remaining quantity of something; a piece of cloth left over after the main piece has been used

Example

Only a remnant of the ancient wall remains.

古代の壁の残り物だけが残っています。

C1 noun/verb /rɪˈpoʊz/

repose

休息

Meaning

a state of rest, sleep, or tranquility; to rest or lie in a peaceful position

Example

After the long journey, she sought repose in the quiet garden.

長い旅の後、彼女は静かな庭で休息を求めた。

C2 noun /ˈræp.aɪn/

rapine

略奪

Meaning

the violent seizure of someone's property

Example

The war was marked by rapine and destruction.

戦争は略奪と破壊で特徴づけられていた。

C2 noun /roʊˈtʌn.də/

rotunda

円形の建物

Meaning

a large circular building or hall, often with a dome

Example

Tourists gathered inside the grand rotunda of the capitol.

観光客は議会堂の壮大なロタンダの中に集まりました。

C1 noun ˌrev.əˈluː.ʃən.ər.i ɪˈnɪʃ.ə.tɪv

revolutionary initiative

革命的イニシアティブ

Meaning

A groundbreaking action or plan that brings about significant change or transformation.

Example

The revolutionary initiative promotes sustainable energy.

革命的なイニシアティブは持続可能なエネルギーを促進します。

A2 verb /rɪˈpiːt/

repeat

繰り返す

Meaning

to say or do something again

Example

Could you please repeat what you just said?

今言ったことを繰り返してくれますか？

B2 noun /ˌren.əˈveɪ.ʃən/

Renovation

リノベーション; 改修

Meaning

the act of renovating; restoration to a former better state

Example

The old house underwent a complete renovation last year.

その古い家は昨年完全な改修を受けました。

C2 noun /ˈrʊkəri/

rookery

鳥の巣

Meaning

a place where rooks or other birds breed and nest in colonies

Example

We saw a rookery full of noisy birds near the forest.

森の近くで、騒がしい鳥たちでいっぱいの鳥の巣を見ました。

C1 adjective rɪsk-ədˈʤɛstɪd

risk-adjusted

リスク調整済み

Meaning

Modified or calibrated to account for risk factors in investment returns.

Example

Risk-adjusted returns consider both potential profit and loss.

リスク調整後のリターンは、潜在的な利益と損失の両方を考慮します。

A2 adjective /ˈriː.sənt/

Recent

最近の; 新しい; 現在の;

Meaning

happening not long ago; new; current;

Example

The recent changes in weather patterns concern scientists.

最近の天気の変化は科学者たちを心配させています。

A1 verb /rɪˈmembə/

remember

覚える

Meaning

to bring a past event back into one's mind; to keep in memory

Example

I remember my first day at school.

私は学校の最初の日を覚えています。

C1 verb /rɪˈkuːpəreɪt/

recuperate

回復する

Meaning

to recover from illness or regain strength

Example

She went to the countryside to recuperate after surgery.

彼女は手術後、回復するために田舎に行った。

C1 adjective /rɪˈsɛptɪv/

receptive

受容的

Meaning

Willing to listen to or accept new ideas, suggestions, or experiences.

Example

She was receptive to feedback from her colleagues.

彼女は同僚からのフィードバックを受け入れる姿勢を持っていました。

C1 adjective /rɪˈvenʒ.fəl/

Revengeful

復讐心に燃える

Meaning

seeking or desiring revenge; vindictive

Example

He became revengeful after being betrayed by his friend.

彼は友達に裏切られた後、復讐心に燃えるようになった。

C1 noun /ˈreɪ.vən/

Raven

ワタリガラス

Meaning

a large, black bird with a thick bill and harsh croaking voice

Example

The raven perched on the old oak tree and cawed loudly.

ワタリガラスが古いオークの木に止まり、大きな声で鳴いた。

B2 adverb /ˈræp.ɪd.li/

Rapidly

速やかに; 急速に

Meaning

at a fast speed; quickly

Example

The company is rapidly expanding into new markets.

会社は新しい市場に急速に拡大しています。

B2 adjective /ˈrændəm/

Random

ランダム

Meaning

without pattern or predetermined order; happening by chance

Example

She selected a random book from the library shelf.

彼女は図書館の棚からランダムに本を選びました。

C1 verb /ˌriːˈmɒdəl/

remodel

改装する

Meaning

To change the structure or form of something, especially a building.

Example

They decided to remodel their kitchen last summer.

彼らは昨年の夏にキッチンをリモデルすることに決めました。

A2 noun reɪndʒ

range

範囲

Meaning

The extent or scope of something; the distance that can be covered or the limits within which something operates.

Example

The new electric car has a range of 400 miles.

新しい電気自動車の範囲は400マイルです。

C1 adjective /ˈraɪ.tʃəs/

Righteous

正義の; 公正な; 道徳的な

Meaning

morally right or justifiable; virtuous; having strong moral principles

Example

She felt righteous anger at the unfair treatment of workers.

彼女は労働者の不当な扱いに対して正義の怒りを感じました。

B2 noun /ˌref.jʊˈdʒiː/

Refugee

難民

Meaning

a person who has been forced to leave their country in order to escape war, persecution, or natural disaster

Example

The refugee camp provided temporary shelter for thousands of displaced families.

難民キャンプは、何千人もの避難した家族に一時的な避難所を提供しました。

C1 adjective /rɪˈpjuː.t̬ɪd/

Reputed

評判の良い; 有名な

Meaning

generally said or believed to be; having a particular reputation

Example

He is reputed to be one of the best doctors in the country.

彼はその国で最高の医者の一人と見なされています。

B2 noun /rɪˈhɜːr.səl/

Rehearsal

リハーサル; 公演の練習

Meaning

a practice performance of a play, concert, or other work for later public performance

Example

The final rehearsal before opening night went perfectly.

開幕前の最後のリハーサルは完璧でした。

C1 adjective /ˌruː.dɪˈmen.tər.i/

Rudimentary

基本的な; 初歩的な; 未発達な; 発展の初期段階にある

Meaning

basic; elementary; undeveloped; in the earliest stage of development

Example

She has only rudimentary knowledge of French.

彼女はフランス語についての初歩的な知識しか持っていません。

C1 noun /rɪˈvʌlʃən/

revulsion

嫌悪

Meaning

a strong feeling of disgust or repulsion

Example

She felt revulsion at the sight of the cruel act.

彼女はその残酷な行為を見て嫌悪感を覚えた。

A2 verb /rɪˈdjuːs/

reduce

減らす

Meaning

to make smaller in size, amount, or degree; to decrease

Example

We need to reduce our expenses this month.

今月は支出を減らす必要があります。

C1 noun /rɪˈpɔːrtɪʒ/

reportage

報道

Meaning

the act of reporting news or describing events in the media

Example

The magazine is known for its detailed reportage of political issues.

その雑誌は政治問題に関する詳細な報道で知られています。

C2 verb /ˈrævɪʃ/

ravish

魅了する

Meaning

To fill with intense delight; to captivate or enchant.

Example

The beauty of the sunset ravished the travelers.

夕日の美しさが旅行者を魅了した。

A2 verb /rɪˈkwaɪər/

require

必要とする

Meaning

to need something; to demand or insist on

Example

This job requires excellent communication skills.

この仕事には優れたコミュニケーションスキルが必要です。

C1 noun /rəˈpɪdəti/

rapidity

迅速さ

Meaning

The quality of moving or happening quickly; swiftness or speed.

Example

The rapidity of technological change is astonishing.

技術的な変化の速さは驚くべきものです。

B2 noun /ˈrem.ə.di/

Remedy

薬; 治療; 問題解決の手段

Meaning

a medicine or treatment for a disease; a solution to a problem

Example

This herbal remedy helps with headaches.

このハーブの薬は頭痛に効く。

B1 adjective /rʌf/

Rough

ざらざらした; 荒い; 厳しい

Meaning

having an uneven surface; not smooth; harsh

Example

The rough surface of the rock hurt my hands.

岩石のざらざらした表面が私の手を傷つけました。

C1 noun /rɪˈtriː.vəl/

retrieval

回復

Meaning

The process of getting something back, especially from storage or memory.

Example

The brain's retrieval system helps recall past experiences.

脳のリトリーバルシステムは過去の経験を思い出すのに役立ちます。

C1 noun /ˌræm.ɪ.fɪˈkeɪ.ʃən/

ramification

結果

Meaning

a consequence of an action or event, often complex or unwelcome.

Example

The new law has serious social ramifications.

新しい法律には深刻な社会的影響があります。

C1 verb /rɪˈtɔːrt/

retort

反論

Meaning

To reply quickly or sharply, often in a witty or angry manner.

Example

He quickly retorted that he was not to blame.

彼は素早く反論した、彼が悪くないと言った。

A2 verb /reɪz/

raise

上げる / 増加させる

Meaning

To lift or move something to a higher position; to increase; to bring up.

Example

She raised her hand to ask a question.

彼女は質問をするために手を上げました。

C1 noun ˈredʒ.ɪ.strɑːr

registrar

レジストラー

Meaning

An official responsible for keeping records or registers.

Example

The registrar oversees all administrative tasks.

レジストラーはすべての行政業務を監督しています。

C1 noun /ˌrɛfjʊˈteɪʃən/

refutation

反証

Meaning

The act of proving a statement or argument to be false or incorrect.

Example

Her essay was a strong refutation of the opposing theory.

彼女のエッセイは反対の理論に対する強い反証でした。

B1 adjective ˈriː.dʒən.əl

regional

地域の

Meaning

Relating to or characteristic of a region.

Example

Regional hubs support localized industries.

地域のハブは地元産業をサポートします。

C1 adjective /ˈraʊ.di/

Rowdy

騒々しい; 無秩序な; 破壊的な

Meaning

disorderly; unruly; noisy and disruptive

Example

The rowdy children were making too much noise.

騒々しい子供たちは大きな音を立てていた。

C1 adjective /rɪˈpliːt/

replete

満ちた

Meaning

Filled or well-supplied with something; abundantly full.

Example

The book is replete with fascinating historical details.

その本は魅力的な歴史的詳細で満ちています。

C1 adjective /ˈriː.fleks/

Reflex

反射

Meaning

an action performed without conscious thought; relating to reflection

Example

The doctor tested her reflex response by tapping her knee.

医師は彼女の膝を軽く叩いて反射的な反応をテストしました。

B2 noun, verb /ræŋks/

ranks

ランク

Meaning

Positions within a group, especially in a hierarchy or organization.

Example

He quickly moved up the ranks of the army.

彼はすぐに軍隊のランクで上昇しました。

B2 adjective /rɪˈɡret.ə.bəl/

Regrettable

残念な; 失望させる; 悲しい

Meaning

causing or deserving regret; unfortunate; deplorable

Example

It is regrettable that so many talented people left the company.

こんなに多くの才能ある人々が会社を辞めたのは残念です。

C1 noun/verb /reɪn/

rein

Meaning

A strap used to control a horse; to control or guide something.

Example

The rider pulled the rein to stop the horse.

B2 adjective /rɪˈfaɪnd/

Refined

洗練された; 精製された

Meaning

elegant and cultured in appearance, manner, or taste; purified

Example

She has very refined taste in art and music.

彼女は芸術と音楽に非常に洗練された趣味を持っています。

C1 noun, verb /raʊt/

rout

敗北

Meaning

A decisive defeat; to defeat completely.

Example

The army routed the enemy forces in the battle.

軍隊は戦いで敵軍を完全に打ち負かしました。

B2 verb /rɪˈliːv/

relieve

Meaning

to make pain, distress, or difficulty less severe or serious

Example

The medicine helped relieve his headache.

B1 adjective /rɪˈdɪk.jə.ləs/

Ridiculous

馬鹿げた; ばかばかしい; 不合理な

Meaning

extremely silly or unreasonable; deserving or causing laughter

Example

The idea of building a house without tools is ridiculous.

道具なしで家を建てるアイデアは馬鹿げている。

C1 adjective /rɪˈdʒɛn.ə.rə.tɪv/

regenerative

再生的な

Meaning

Able to restore or renew damaged environments, soil, or resources.

Example

Regenerative farming improves soil health and biodiversity.

再生農業は土壌の健康と生物多様性を改善します。

B2 noun ˌrɛstəˈreɪʃən

restoration

修復

Meaning

The process of returning something to its former condition.

Example

The restoration of the forest began after decades of neglect.

森林の修復は数十年の放置後に始まりました。

B1 noun /rɪˈkʌvəri/

recovery

回復

Meaning

the process of recovering or returning to a normal state

Example

The patient is in recovery after the surgery.

患者は手術後、回復中です。

B2 noun /ˈrest.ləs.nəs/

Restlessness

不安

Meaning

the inability to rest or relax as a result of anxiety or boredom

Example

His restlessness during the long meeting was obvious to everyone.

長い会議中、彼の不安は全員に明らかだった。

C1 noun /ˈrɛvərəns/

reverence

尊敬

Meaning

deep respect for someone or something

Example

The students showed reverence to their teacher.

学生たちは先生に尊敬を示した。

C2 adjective /ˈrɛkriənt/

recreant

臆病な, 裏切り者

Meaning

cowardly or unfaithful to duty

Example

The recreant soldier abandoned his post in fear.

その臆病な兵士は恐怖で自分のポストを放棄した。

C1 noun /rɪˈpraɪ.zəl/

Reprisal

報復

Meaning

an act of retaliation; revenge taken for an injury or wrong

Example

The attack was carried out as a reprisal for the earlier bombing.

この攻撃は以前の爆撃に対する報復として行われました。

B2 adjective /rɪˈlʌktənt/

Reluctant

消極的な; ためらう; 何かをすることに抵抗がある;

Meaning

unwilling; hesitant; disinclined to do something;

Example

She was reluctant to share her personal information.

彼女は個人情報を共有することに消極的でした。

B1 noun /rɪˈkwaɪə(r)mənt/

requirement

要件

Meaning

something that is necessary or demanded

Example

The job has specific educational requirements.

この仕事には特定の教育要件があります。

C2 adjective /ˈrɪz.ə.bəl/

risible

滑稽な

Meaning

so absurd or ridiculous that it deserves to be laughed at

Example

The idea of flying pigs is completely risible.

飛ぶ豚のアイデアは完全に滑稽です。

A1 noun ˈræbɪt

rabbit

ウサギ

Meaning

A small mammal with long ears, long hind legs, and a short tail

Example

The rabbit ran quickly into the forest.

ウサギは森の中を速く走った。

B2 noun /ˌrep.ɪˈtɪʃ.ən/

Repetition

繰り返し

Meaning

the action of repeating something that has already been said or written

Example

Constant repetition helps students memorize vocabulary effectively.

継続的な繰り返しは、学生が語彙を効果的に覚えるのを助けます。

A2 noun /rɪˈleɪ.ʃən.ʃɪp/

Relationship

関係

Meaning

the way two people or groups feel and behave towards each other; a connection between two things

Example

They have a very close relationship.

彼らは非常に親密な関係を持っています。

C1 noun /rɪˈspɒnsɪvnəs/

responsiveness

反応性

Meaning

The quality of reacting quickly and positively

Example

The manager appreciated her responsiveness to customer feedback.

マネージャーは彼女の顧客からのフィードバックに対する反応性を評価しました。

C1 noun /ræmˈbuːtən/

Rambutan

ランブータン

Meaning

a tropical fruit with red spiky skin and white translucent sweet flesh similar to litchi

Example

The rambutan looks scary with its hairy skin but tastes very sweet inside.

ランブータンは毛皮のような皮で怖そうに見えますが、中はとても甘いです。

B1 adjective /ˈrel.ə.vənt/

Relevant

Roast

ロースト肉

Meaning

Meat cooked by dry heat in an oven or over an open fire

Example

The Sunday roast was perfectly cooked and very tender.

日曜日のローストは完璧に調理され、とても柔らかかった。

A2 verb /riːˈsaɪ.kəl/

recycle

リサイクル

Meaning

to process used materials so they can be used again instead of being thrown away

Example

We should recycle paper and plastic to reduce waste.

私たちは廃棄物を減らすために紙とプラスチックをリサイクルするべきです。

C2 verb /ˈræpsəˌdaɪz/

rhapsodize

熱狂的に話す

Meaning

to speak or write with great enthusiasm and admiration

Example

He would often rhapsodize about his travels to Europe.

彼はよくヨーロッパ旅行について熱心に話していた。

C2 adjective /rɪˈfrɪndʒənt/

refringent

屈折性

Meaning

Capable of refracting light or other waves.

Example

The refringent properties of the crystal bent the light into a spectrum.

結晶の屈折性の特性は光をスペクトルに曲げました。

C2 noun /ræŋˈɡuːn ˈkriːpər/

Rangoon creeper

ランゴーンクリーパー

Meaning

A climbing vine with fragrant flowers that change color from white to pink to red

Example

The Rangoon creeper covered the entire fence with its sweet-smelling flowers.

ランゴーンクリーパーはその甘い香りの花でフェンス全体を覆いました。

B2 verb /rɪˈfreʃ/

refresh

リフレッシュする

Meaning

to make fresh again; to restore energy

Example

A cold drink refreshes me on hot days.

暑い日には冷たい飲み物が私をリフレッシュさせます。

A2 verb /rɪˈsiːv/

receive

受け取る

Meaning

to get or accept something given; to welcome

Example

She receives a gift from her friend.

彼女は友達から贈り物を受け取ります。

C1 adjective /rɪˈtaɪərɪŋ/

retiring

内向的

Meaning

Shy and reserved; avoiding social contact.

Example

She is a quiet, retiring woman who avoids attention.

彼女は静かで内向的な女性で、注目を避ける。

C1 noun /ˌrek.ənˌsɪl.iˈeɪ.ʃən/

reconciliation

和解

Meaning

The restoration of friendly relations; the action of making one view or belief compatible with another.

Example

The peace treaty was a major step toward reconciliation.

平和条約は和解への重要な一歩でした。

C1 noun /riːk/

Reek

悪臭がする; 不快または望ましくない印象を与える

Meaning

to have a very unpleasant smell; to give a strong impression of something unpleasant or undesirable

Example

The garbage can reeks of rotten food.

ゴミ箱は腐った食べ物の臭いがする。

C1 noun /ˈroʊz ˈwɔː.tər/

Rose-water

ローズウォーター

Meaning

a flavored water made by steeping rose petals in water, used in cooking and cosmetics

Example

She added a few drops of rose-water to the dessert.

彼女はデザートにローズウォーターを数滴加えました。

C1 noun /ˌriːhəˌbɪlɪˈteɪʃən/

rehabilitation

幸福

Meaning

the process of restoring someone or something to health or normal life through training or therapy

Example

After the accident, he went through months of rehabilitation to walk again.

彼女は賞を受け取ったとき、自分の幸福を隠せなかった。

B1 noun /roʊp/

rope

ロープ

Meaning

a strong, thick cord made of twisted fibers or strands

Example

The climbers used a rope to scale the mountain.

登山者は山を登るためにロープを使いました。

C1 adjective /ˈrɔːkəs/

raucous

騒々しい, うるさい

Meaning

loud, harsh, and unpleasant sound or behavior

Example

The crowd became raucous after the team scored.

チームがゴールを決めると、群衆は騒がしくなった。

B2 verb /rɪˈkʌvərɪŋ/

recovering

回復

Meaning

the process of getting better after illness, loss, or difficulty

Example

She is still recovering from the flu.

彼女はまだインフルエンザから回復しています。

B1 adverb /rɪˈpiː.tɪd.li/

Repeatedly

繰り返し; 何度も

Meaning

again and again; many times over

Example

He repeatedly asked for help with his homework.

彼は宿題について何度も助けを求めました。

C2 noun /rɪˈkɒɡnɪzəns/

recognizance

法的義務

Meaning

A legal obligation or bond entered into before a court, especially to ensure future appearance.

Example

He was released on his own recognizance.

彼は自分の法的義務で釈放されました。

A1 verb /riːd/

read

読む

Meaning

to look at written words and understand their meaning

Example

I read books before going to bed.

私は寝る前に本を読みます。

B2 noun, verb /ræmp/

ramp

ランプ

Meaning

a sloping surface joining two different levels; as a verb, to increase or rise sharply

Example

The car drove up the ramp into the parking garage.

車は駐車場のランプを上がった。

C1 adjective /ˈræmpənt/

rampant

蔓延する

Meaning

existing or spreading unchecked, often in an undesirable way

Example

Corruption was rampant in the city administration.

腐敗は市の行政で蔓延していた。

B2 noun /rʌst/

Rust

錆

Meaning

reddish-brown coating formed on iron or steel by oxidation; corrosion

Example

The old car was covered in rust after years of neglect.

古い車は何年も放置されていた後、サビで覆われていました。

C1 verb /ˌriːɪnˈsteɪt/

reinstate

再雇用する

Meaning

To restore someone or something to their former position or condition.

Example

The company decided to reinstate the suspended employee.

その会社は停止された従業員を再雇用することを決定した。

B2 noun /ˌriːprəˈdʌkʃən/

reproduction

再生, 繁殖

Meaning

The process of producing offspring; the act of copying or duplicating.

Example

The textbook included a detailed diagram of human reproduction.

教科書には人間のリプロダクションの詳細な図が含まれていました。

B2 verb /rɪˈkruːt/

recruit

採用する

Meaning

to enlist or hire people for a job, service, or membership

Example

The company is trying to recruit more software engineers.

その会社はもっと多くのソフトウェアエンジニアをリクルートしようとしています。

A1 noun, verb /rɛst/

rest

Meaning

to cease work or movement in order to relax or recover strength

Example

He needs to rest after the long journey.

B1 adverb /ˈrel.ə.tɪv.li/

Relatively

相対的に

Meaning

in comparison to something else; quite; fairly

Example

The weather is relatively warm today.

今日の天気は相対的に暖かい。

C2 verb /rɪˈfrækt/

refract

屈折する

Meaning

To bend light, sound, or heat as it passes through a medium.

Example

The water refracts light, making the straw look bent.

水は光を屈折させ、ストローが曲がって見える。

C1 noun /ˈrɪpəl/

Ripple

波紋

Meaning

a small wave on the surface of water; a spreading effect or influence

Example

The stone created ripples across the calm pond.

石が静かな池に波紋を作った。

C1 verb /reɪz/

raze

取り壊す

Meaning

To completely destroy or demolish something, especially a building.

Example

The old factory was razed to make way for new apartments.

古い工場は新しいアパートメントのために取り壊されました。

C1 noun /ˌrev.əˈluː.ʃən.ər.i ˈbreɪk.θruː/

revolutionary breakthrough

革命的な発見

Meaning

A sudden, dramatic, and important discovery or development that changes everything.

Example

Robotic surgery is a revolutionary breakthrough in healthcare.

ロボット手術は医療分野での革命的な発見です。

B2 noun /rɪˈstreɪnt/

Restraint

抑制; 自制

Meaning

the action of keeping someone or something under control; self-control

Example

She showed great restraint in not responding to the criticism.

彼女は批判に反応しなかったことに大きな自制心を見せた。

A2 adverb /ˈrɑː.ðər/

Rather

むしろ; ～の代わりに;

Meaning

to some extent; instead; preferably

Example

I would rather stay home than go to the party.

パーティーに行くよりも家にいる方がいい。

B1 noun roʊps

ropes

ロープ

Meaning

A length of thick strong cord made by twisting together strands of hemp, sisal, nylon, or similar material.

Example

The ropes were tied securely to lift the heavy load.

ロープは重い荷物を持ち上げるためにしっかりと結ばれていました。

C1 adjective /riˈækʃəˌneri/

reactionary

反動的

Meaning

Opposing political or social progress or reform; extremely conservative.

Example

The group took a reactionary stance against the new policies.

グループは新しい政策に対して反動的な立場を取った。

B2 noun /reɪdʒ/

rage

怒り

Meaning

intense anger or fury

Example

She shouted in a fit of rage after hearing the news.

彼女はそのニュースを聞いて怒りの叫び声を上げました。