A2 adjective /ruːd/

Rude

失礼な; 無礼な; 粗野な; 厳しい

Meaning

impolite; discourteous; lacking civility; rough or harsh in manner

Example

It was rude of him to interrupt the meeting.

会議を中断することは失礼でした。

C1 noun /rɪˈvɜːrʒən/

reversion

逆転

Meaning

the act of returning to a previous state or condition

Example

The new policy marked a reversion to traditional methods.

新しい政策は伝統的な方法への逆転を意味しました。

B2 noun /ˈreɪ.zɪnz/

Raisins

レーズン

Meaning

dried grapes, often used in cooking and baking

Example

She added raisins to the oatmeal cookies for extra sweetness.

彼女はオートミールクッキーに甘さを加えるためにレーズンを加えた。

C1 verb /ˈrʌsl/

rustle

ささやく

Meaning

To make a soft, light sound like leaves or paper moving.

Example

The leaves rustled gently in the evening breeze.

葉っぱが夕方のそよ風でそっとささやいていました。

A2 adjective /reər/

Rare

珍しい

Meaning

not occurring very often; uncommon or unusual

Example

It's rare to find such beautiful handmade jewelry these days.

こんな美しい手作りのジュエリーを見つけることは珍しい。

C1 noun /ˈrɛ.trəʊ.fɪt.ɪŋ/

retrofitting

古いシステムに新しい技術や機能を追加すること

Meaning

The addition of new technology or features to older systems.

Example

The building underwent retrofitting to meet new safety standards.

その建物は、新しい安全基準に適応するためにレトロフィッティングされました。

C1 verb /rɪˈbjuːk/

rebuke

叱る

Meaning

to criticize or scold sharply; to express disapproval

Example

The teacher had to rebuke the student for cheating.

先生は cheating のため学生を叱らなければならなかった。

C1 verb /ˌriːˈkæl.ɪ.breɪt/

recalibrate

再調整する, 調整し直す

Meaning

To calibrate again or differently; to adjust or correct something based on new information or changed circumstances.

Example

The company had to recalibrate its strategies to adapt to the market.

会社は市場に適応するために戦略を再調整する必要があった。

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。

B2 noun /rɪˈmeɪnz/

remains

遺物

Meaning

the parts, pieces, or substances that are left after the rest has been used or removed

Example

The remains of the meal were left on the table.

食事の残り物はテーブルに残されていた。

C2 noun /rɪˈsɪdɪvɪst/

recidivist

再犯者

Meaning

A person who repeatedly commits crimes, especially after having been punished.

Example

The police identified him as a recidivist who had been arrested several times before.

警察は彼を再犯者として特定し、以前に何度も逮捕されていた。

B2 adjective /ˈrɪdʒ.ɪd/

Rigid

硬直

Meaning

hard and stiff; not able to bend; strict and unwilling to change

Example

The company has a rigid dress code that all employees must follow.

会社にはすべての従業員が従う必要がある厳格なドレスコードがあります。

C1 verb /rɪˈpiːl/

repeal

Meaning

To officially cancel or revoke a law or decision.

Example

The government decided to repeal the outdated law.

C2 noun /ræpˈskæliən/

rapscallion

いたずら好きな人

Meaning

A mischievous or cheeky person; a rascal.

Example

The little rapscallion hid his brother’s shoes as a prank.

小さなラプスカリオンは兄の靴をいたずらで隠した。

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 adjective /ˈreɪ.moʊs/

ramose

分岐した

Meaning

having many branches.

Example

The ramose tree shaded the entire garden.

その分岐した木は庭全体に日陰を提供しました。

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 adjective /rɪˈnjuː.ə.bəl/

renewable

再生可能

Meaning

Able to be renewed or replaced naturally; not depleted when used.

Example

Renewable resources minimize environmental damage.

再生可能な資源は環境へのダメージを最小限に抑えます。

B1 noun /ˈriː.dʒən/

Region

地域; 区域; 地帯

Meaning

a particular area or part of a country or the world

Example

This region is famous for its wine production.

この地域はワイン生産で有名です。

B2 noun /rɪˈstrɪk.ʃən/

Restriction

制限; 限界; コントロール

Meaning

a limiting condition or measure; the limitation or control of someone or something

Example

There are strict restrictions on smoking in public places.

公共の場所での喫煙には厳格な制限があります。

C1 noun rɪˌkuːpərˈeɪʃən

recuperation

回復

Meaning

The process of gradually recovering from illness or fatigue

Example

Rest is essential for recuperation after illness.

病気からの回復には休息が不可欠です。

C1 noun /rəˈviːn/

ravine

渓谷

Meaning

A deep, narrow valley with steep sides.

Example

The river carved a deep ravine through the mountains.

川は山々を通って深い渓谷を作り出した。

C2 adjective /ˈræfɪʃ/

raffish

型破りで少し評判が悪いが魅力的

Meaning

unconventional and slightly disreputable but attractive

Example

He had a raffish charm that made him popular in the city.

彼は街で人気がある理由は、レイフィッシュな魅力があったからだ。

B1 noun /rɪˈpleɪsmənt/

replacement

交換

Meaning

the act of substituting one thing or person for another

Example

She got a replacement for her damaged phone.

彼女は壊れた電話の交換を受けました。

B2 adverb /rɪˈmɑːrkəbli/

remarkably

驚くべき方法で

Meaning

in a way that is worthy of attention or notice; surprisingly

Example

She did remarkably well in the competition.

彼女はコンペティションで驚くべき成果を上げました。

C2 verb /rɪˈkænt/

recant

撤回する

Meaning

to withdraw or renounce a statement or belief formally

Example

He recanted his previous statement in court.

彼は裁判で以前の発言を撤回しました。

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。

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 phrase ˈriː.dʒən.əl ˈfɔː.rəm

regional forum

地域フォーラム

Meaning

A meeting or conference where representatives from countries or organizations in a specific geographical area discuss issues of common interest.

Example

The Regional Forum discussed deforestation impacts.

地域フォーラムでは、森林伐採の影響について議論されました。

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。

C1 verb /rɪˈlɛnt/

relent

譲歩する、柔らかくなる

Meaning

to become less severe, harsh, or strict

Example

After hours of begging, she finally relented.

何時間もの懇願の後、彼女はついに譲歩した。

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 verb /rɪˈɡrɛs/

regress

Meaning

To return to a former or less developed state.

Example

Without proper guidance, the child's progress began to regress.

C1 verb /ˌriːˈsiːt/

reseat

再座席

Meaning

to seat someone again or to fit something back into its place

Example

The usher had to reseat the guests after the interruption.

接客係は中断後、ゲストを再座席させなければならなかった。

B1 verb /rɪˈvaɪz/

revise

修正する

Meaning

To change, improve, or update something, especially a written work.

Example

She had to revise her essay before submission.

彼女は提出前にエッセイをリヴァイズする必要があった。

C1 verb /rɪˈkɔɪl/

recoil

後退する

Meaning

To suddenly spring back in fear, horror, or from force such as a gun's kickback.

Example

She recoiled at the sight of the snake.

彼女はヘビを見て後退した。

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。

C1 adjective /rɪˈvɜː.sə.bəl/

Reversible

可逆的な

Meaning

able to be turned the other way around; able to be undone or changed back

Example

This jacket is reversible and can be worn on both sides.

このジャケットはリバーシブルで、両面で着られます。

A2 noun /ˈrʌnɪŋ/

running

ランニング

Meaning

the action or sport of running

Example

Running every morning keeps me healthy.

毎朝ランニングをすると健康が保たれます。

C2 noun /ˈræbəl/

Rabble

群衆

Meaning

a disorderly crowd; the common people regarded as socially inferior

Example

The politician dismissed the protesters as mere rabble.

政治家は抗議者を単なる群衆として退けた。

C1 noun /ˈrɛpərˌtɔːri/

repertory

レパートリー

Meaning

A collection of works that a company, performer, or institution regularly performs; also a storehouse of information or skills.

Example

The theater has a repertory of classic plays.

劇場にはクラシックな演劇のレパートリーがあります。

B1 noun /ˈrɛzɪdəns/

residence

レジデンス

Meaning

a place where someone lives; a home or dwelling

Example

He recently moved to a new residence near the city center.

彼は最近、市内中心部近くの新しいレジデンスに引っ越しました。

A1 adjective /raʊnd/

round

丸い

Meaning

having a circular shape; shaped like a sphere or disk

Example

The table was round and had a smooth surface.

テーブルは丸くて、滑らかな表面がありました。

C1 verb /rɪˈvoʊk/

revoke

取り消す

Meaning

To officially cancel or withdraw a decision, privilege, or right.

Example

The government decided to revoke his passport.

政府は彼のパスポートを取り消すことを決定した。

C1 noun /ˌrɛs.ɪˈprɒs.ɪ.ti/

reciprocity

相互利益のために他の人と物を交換する行為

Meaning

The practice of exchanging things with others for mutual benefit.

Example

Business relationships thrive on reciprocity.

ビジネス関係は相互利益に依存しています。

B1 verb /rɪˈleɪt/

relate

resonant

響く

Meaning

Deep, clear, and continuing to sound or echo.

Example

The resonant voice of the speaker filled the hall.

スピーカーの響く声がホールに響き渡った。

C1 noun rɪˈdʒɛn.ər.ə.tɪv ˈfɑːr.mɪŋ

regenerative farming

再生農業

Meaning

Agricultural practices that improve soil health and biodiversity.

Example

Regenerative farming improves soil fertility and biodiversity.

再生農業は土壌の肥沃度と生物多様性を向上させます。

C1 verb /rɪˈdrɛs/

redress

是正する

Meaning

to set right, remedy, or compensate for a wrong or grievance

Example

The company promised to redress the complaints of its customers.

その会社は顧客の苦情を是正すると約束しました。

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。

B2 noun /ˈrɛzərvwɑːr/

reservoir

貯水池

Meaning

A large natural or artificial lake used as a source of water supply.

Example

The city built a new reservoir to ensure enough drinking water for its residents.

その都市は住民に十分な飲料水を確保するために新しい貯水池を建設した。

C1 verb /ˈrɛlɪɡeɪt/

relegate

降格する

Meaning

to assign to a lower rank, position, or category

Example

The manager decided to relegate the player to the bench.

マネージャーは選手をベンチにレリゲートすることを決定しました。

C2 verb /ˌriːkruːˈdɛs/

recrudesce

再発

Meaning

to break out or appear again after a period of dormancy or decline

Example

After months of calm, violence recrudesced in the region.

数ヶ月の静けさの後、暴力が再発しました地域で。

B2 adjective /rɪˈmuːvəbəl/

removable

取り外し可能な

Meaning

able to be removed or taken away

Example

This phone has a removable battery.

この電話には取り外し可能なバッテリーがあります。

B2 adjective /ˈræp.ɪd/

Rapid

迅速な；急速な；素早い；

Meaning

happening in a short time or at a fast pace

Example

The rapid growth of technology has changed our daily lives.

テクノロジーの急速な成長は私たちの日常生活を変えました。

C1 adjective /rɪˈvoʊltɪŋ/

revolting

むかつく

Meaning

extremely unpleasant or disgusting

Example

The smell of the garbage was revolting.

ごみのにおいはむかつくほどだった。

B1 verb /rɪˈtɜrnɪŋ/

returning

戻る

Meaning

Coming or going back to a place or person.

Example

The group is returning to the port on December 25th.

グループは12月25日に港に戻ります。

B2 noun /ˈrɒbəɹi/

robbery

強盗

Meaning

the crime of stealing from someone or somewhere using force or threat

Example

The police are investigating the robbery at the local store.

警察は地元の店での強盗事件を調査しています。

B2 noun /ˈrɪk.ʃɔː/

Rickshaw

リクシャ

Meaning

a light two-wheeled passenger vehicle drawn by one or more people

Example

We took a rickshaw to reach the busy marketplace.

忙しい市場に到着するためにリクシャを利用しました。

B2 adjective /raɪp/

Ripe

熟した; 食べる準備ができた

Meaning

fully developed and ready to eat; mature; ready for action or use

Example

The bananas are ripe and ready to eat.

バナナは熟して食べる準備ができています。

C2 adjective /ˈrævənɪŋ/

ravening

非常に空腹で貪欲

Meaning

Extremely hungry and greedy; voracious.

Example

The ravening wolves circled the camp.

空腹の狼たちはキャンプを囲んだ。

C1 verb /ˌriːˈvaɪ.t̬əl.aɪz/

revitalize

再活性化する

Meaning

To restore energy and effectiveness to something.

Example

The new policies aim to revitalize the economy.

新しい政策は経済を再活性化することを目的としています。

B2 verb /rɪˈzuːm/

resume

再開する

Meaning

to start again after a pause or interruption

Example

We will resume the meeting after lunch.

ランチの後に会議を再開します。

B2 verb /rɪˈzɪst/

resist

抵抗する

Meaning

to oppose or fight against; to withstand

Example

He could not resist the temptation.

彼は誘惑に抵抗できませんでした。

B2 adverb /rɪˈpɔːtɪdli/

reportedly

報告によると

Meaning

according to what is said or believed, although not confirmed

Example

The company has reportedly agreed to the new terms.

その会社はreportedly新しい条件に同意しました。

C2 adjective /raɪˈpɛə.ri.ən/

riparian

河川や他の水路の岸辺に関連する

Meaning

Relating to or situated on the banks of a river or other watercourse.

Example

Riparian vegetation helps prevent soil erosion along rivers.

河川沿いの植生は、河川沿いの土壌浸食を防ぐのに役立ちます。

C2 noun /ˌrɛtroʊˈɡrɛʃən/

retrogression

後退

Meaning

a return to a worse or less developed state

Example

The country experienced economic retrogression after the crisis.

国は危機後、経済的な後退を経験しました。

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。

C1 verb /ˈrek.ən.saɪl/

reconcile

和解する, 調和する

Meaning

Restore friendly relations between; cause to coexist in harmony.

Example

They tried to reconcile their differences through open communication.

彼らは開かれたコミュニケーションを通じて自分たちの違いを和解しようとしました。

B2 verb /ˈræm.bəl/

ramble

Meaning

to talk or write at length in a confused or inconsequential way; to walk for pleasure without a fixed route.

Example

He rambled on about his childhood for hours.

B2 noun ˌrɛzɪɡˈneɪʃən

resignation

辞任

Meaning

The acceptance of something undesirable but inevitable; giving up.

Example

Her resignation from the position was unexpected.

彼女の職からの辞任は予想外だった。

B1 noun ˈreɪn.fɒr.ɪst

rainforest

熱帯雨林

Meaning

A luxuriant, dense forest rich in biodiversity, found typically in tropical areas with consistently heavy rainfall.

Example

The Amazon rainforest is home to millions of species.

アマゾンの熱帯雨林は数百万種の生物の家です。

C1 verb /ˈræn.sæk/

ransack

略奪する

Meaning

to search a place roughly and steal or damage things

Example

Burglars ransacked the house while the family was away.

泥棒たちは家族が留守の間に家を荒らした。

C1 noun /ˈrʌmpəs/

Rumpus

騒動; 混乱; 騒音

Meaning

a noisy disturbance; an uproar or commotion

Example

The children caused quite a rumpus in the playground.

子供たちは遊び場でかなりの騒動を引き起こしました。

B1 verb /rɪˈliːs/

release

解放する

Meaning

to set free; to allow something to escape or go away

Example

The prisoner was released after ten years.

囚人は10年後に解放されました。

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。

B1 noun /ˈrɛntəl/

rental

レンタル

Meaning

an arrangement in which something is rented, or the amount paid for renting

Example

The car rental was more expensive than we expected.

レンタカーは予想より高かった。

C2 verb /ˈreə.rɪ.faɪ/

rarefy

薄くする, 精製する

Meaning

To make something less dense or more refined.

Example

The air rarefies as you climb higher into the mountains.

山に登るにつれて、空気は薄くなります。

B1 noun /rɪˈtaɪə.mənt/

Retirement

退職

Meaning

the action or fact of leaving one's job and ceasing to work; the period of life after leaving work

Example

He is planning his retirement after 40 years of service.

彼は40年間の勤務の後、退職を計画しています。

B2 adjective /ˈreɪʃəl/

racial

人種の

Meaning

relating to a race of people

Example

Racial equality is an important issue in many societies.

人種平等は多くの社会において重要な問題です。

B1 adjective /ˈrel.ə.vənt/

Relevant

Reformer

改革者

Meaning

a person who works to bring about positive changes in society or institutions

Example

The social reformer dedicated her life to improving education for all children.

社会的な改革者は、すべての子供たちの教育を改善するために自分の人生を捧げました。

C2 adjective /ræpˈtɔːriəl/

raptorial

肉食鳥

Meaning

Relating to birds of prey or predatory behavior.

Example

The eagle is a raptorial bird with sharp talons.

ワシは鋭い爪を持つ肉食鳥です。

C2 adjective /ˌrɛpərˈtɔːriəl/

repertorial

レポートに関する

Meaning

Relating to or characteristic of a repertoire, especially in journalism or performance contexts.

Example

The journalist's repertorial style captured every detail of the unfolding story.

そのジャーナリストのレポーティオリアルスタイルは、展開するストーリーのあらゆる詳細を捉えました。

C1 noun /rɪˈkluːs/

recluse

隠者

Meaning

A person who lives alone and avoids other people; someone who lives a solitary life.

Example

The old man lived as a recluse in the mountains.

その老人は山の中で隠者として暮らしていた。

C1 adjective /ˈræɡ.ɪd/

Ragged

ボロボロの; 破れた; ぼろぼろ

Meaning

torn; tattered; frayed; shabby

Example

The homeless man wore ragged clothes.

ホームレスの男はボロボロの服を着ていた。

C1 noun ˈrez.ɪ.djuːz

residues

残留物

Meaning

A small amount of something that remains after the main part has gone or been taken or used.

Example

The burning process leaves no harmful residues.

燃焼プロセスでは有害な残留物は残りません。

C2 noun /riːm/

ream

リーム

Meaning

A large quantity of paper (typically 500 sheets); informally, a large amount of something.

Example

The office ordered ten reams of paper.

オフィスは10リームの紙を注文した。

C1 noun /ˈrɒstrəm/

rostrum

演壇

Meaning

A raised platform for speakers, performers, or leaders.

Example

The politician delivered a speech from the rostrum.

政治家は演壇から演説を行いました。

C2 noun /rɪˈvaɪ.zəl/

revisal

改訂

Meaning

The act of revising, reviewing, or making changes to something.

Example

The revisal of the contract took longer than expected.

契約の改訂には予想以上の時間がかかりました。

A1 noun /roʊd/

road

道路

Meaning

a wide way leading from one place to another

Example

We drove along the road to the village.

私たちは村に向かってその道路を運転していました。

A2 noun /ræt/

Rat

ネズミ

Meaning

a large long-tailed rodent that is typically considered a pest

Example

The rat scurried across the kitchen floor.

ネズミは台所の床を走り抜けました。

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。

C2 adjective /rɪˈfɛrəbəl/

referable

参照可能な

Meaning

able to be related or directed to something

Example

The issue is referable to the new policy changes.

その問題は新しい政策変更に関連付けることができます。

C1 verb /ˌriː.ɪˈstæblɪʃ/

reestablish

再建する

Meaning

to set up or restore something again after it has been disrupted

Example

The government worked hard to reestablish peace in the region.

政府は地域の平和を再建するために懸命に働きました。

C1 noun ˌriːˌvaɪ.təl.aɪˈzeɪ.ʃən

revitalization

再生

Meaning

The action of giving new life and vitality to something.

Example

Proper rest and nutrition lead to revitalization of the body.

適切な休息と栄養は体のリバイタライゼーションに繋がります。

B2 verb /rɪˈɡeɪn/

regain

回復する

Meaning

to get back something that was lost; to recover

Example

He regains his strength after the illness.

彼は病気の後、力を回復する。

B1 noun rɪˈdʌk.ʃən

reduction

削減

Meaning

The action or fact of making a specified thing smaller or less in amount, degree, or size.

Example

Greenhouse gas reduction is a primary global goal.

温室効果ガスの削減は主要な地球規模の目標です。

C1 verb /ˌriː.kənˈviːn/

reconvene

再開する

Meaning

to gather or assemble again, especially for a meeting

Example

The committee will reconvene after lunch.

委員会は昼食後に再開します。

B2 verb /ˈraɪpən/

ripen

幸せ

Meaning

to become or make something ready to eat or fully developed

Example

The bananas ripened quickly in the warm weather.

彼女は賞を受け取ったとき、幸せを隠せなかった。

C2 noun /ˈrɛlɪkwɛri/

reliquary

聖遺物を保管する容器

Meaning

a container for holy relics

Example

The ancient reliquary was decorated with gold and precious stones.

古代のレリクエアリは金と貴重な石で飾られていました。

B2 noun /rɪˈvendʒ/

Revenge

復讐

Meaning

the action of inflicting hurt or harm on someone for an injury or wrong suffered at their hands

Example

She sought revenge against those who betrayed her trust.

彼女は信頼を裏切った者たちに復讐を求めた。

C1 adjective /rɪˈtæl.i.ə.tɔːr.i/

retaliatory

報復的

Meaning

Taking action in response to another's action, characterized as punitive, revengeful, or counteractive.

Example

The country imposed retaliatory tariffs in response to trade sanctions.

その国は貿易制裁に対して報復的な関税を課しました。

C2 noun /ˈrɛk.tɪ.tjuːd/

rectitude

誠実

Meaning

Morally correct behavior or thinking; righteousness and integrity.

Example

His rectitude earned him respect in society.

彼の誠実さは社会で尊敬を得た。

B2 adjective /rɪˈspek.tə.bəl/

Respectable

尊敬すべき

Meaning

worthy of respect; having good reputation; decent

Example

He comes from a respectable family in the community.

彼は地域社会の尊敬すべき家族から来ました。

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 noun /ˈreɪ.zər/

Razor

かみそり

Meaning

a sharp-edged instrument used for shaving hair from the skin

Example

He shaved his beard with a sharp razor.

彼は鋭いかみそりでひげを剃った。

C2 noun /rɪˈfrækʃən/

refraction

屈折

Meaning

The bending of light, sound, or other waves when they pass from one medium to another of different density.

Example

The refraction of light in water makes objects appear bent.

水中の光の屈折により、物体が曲がって見えます。

C2 adjective /rɪˈkʌmbənt/

recumbent

横たわる

Meaning

lying down or in a resting position

Example

He was found recumbent on the sofa after a long day.

彼は長い一日の後、ソファで横になっているのが見つかりました。

C1 adjective /rɪˈzɪstɪv/

resistive

抵抗性

Meaning

tending to resist or oppose; in physics, relating to electrical resistance

Example

The material has resistive properties that slow down current flow.

その材料は、電流の流れを遅くする抵抗性の特性を持っています。

B2 verb /ˈrendər/

render

提供する

Meaning

to provide or give; to make or cause to become

Example

The artist renders the scene beautifully.

アーティストはシーンを美しく表現します。

B2 noun rɪsk ˈfæktər

risk factor

リスク要因

Meaning

Something that increases the likelihood of developing a disease or condition

Example

Water pollution is a significant risk factor for health.

水質汚染は健康にとって重要なリスク要因です。

C1 noun /ˈrʌfiən/

Ruffian

暴力的な人物; 不良;

Meaning

a violent person, especially one involved in crime; a brutal or lawless person

Example

The ruffian threatened the shopkeeper for money.

不良は店主を金のために脅した。

C1 noun /rɪˈpjuːt/

repute

評判

Meaning

the opinion generally held of someone or something; reputation

Example

He is a scholar of great repute in his field.

彼はその分野で大変な評判を持つ学者です。

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 /rɪˈdʒɔɪsɪŋ/

rejoicing

喜び

Meaning

The action of showing great joy or happiness

Example

There was much rejoicing after the victory.

勝利後、多くの喜びがありました。

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。

B2 noun /ˌreɡ.jʊˈleɪ.ʃənz/

regulations

規制

Meaning

Rules or directives made and maintained by an authority.

Example

Strict regulations ensure fair practices.

厳格な規制は公正な慣行を確保します。

B2 verb rɪˈstɔːr

restore

復元する

Meaning

To bring back to a former or original state; to reinstate.

Example

Restoring the tradition of student politics is necessary.

学生政治の伝統を復元することが必要です。

C1 adjective /ˈroʊ.ɡɪʃ/

Roguish

いたずらな; 狡猾な

Meaning

mischievous; playfully dishonest

Example

His roguish smile suggested he was up to some mischief.

彼のいたずらな笑顔は、彼が何かいたずらを仕掛けていることを示唆していました。

B2 noun /ˈræŋkɪŋ/

ranking

ランキング

Meaning

a position in a list or hierarchy, especially in terms of performance or importance

Example

His ranking in the competition improved after each round.

彼の競技でのランキングは、各ラウンド後に向上しました。