Reformer
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B2 noun /rɪˈfɔːr.mər/

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。
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。
C2 verb /ˌriː.kəˈnɔɪ.tər/

reconnoiter

偵察する
Meaning
to make a preliminary inspection or survey, especially of an area for military or strategic purposes
Example
The soldiers reconnoitered the area before advancing.
兵士たちは進軍する前にその地域を偵察しました。
B1 noun rɪˌspɒnsəˈbɪlɪti

responsibility

責任
Meaning
The state or fact of having a duty to deal with something or of having control over someone.
Example
Taking responsibility for one's actions is a sign of maturity.
自分の行動に責任を持つことは、成熟の証です。
A2 verb /roʊl/

roll

転がる
Meaning
to move by turning over and over on an axis
Example
She rolled the ball down the hill.
彼女はボールを丘の下に転がしました。
C1 noun /ˈruːdɪmənt/

rudiment

基本
Meaning
A basic principle, element, or fundamental part of something.
Example
He learned the rudiments of music before joining the band.
彼はバンドに参加する前に音楽の基礎を学びました。
B1 noun ˌrek.ə.menˈdeɪ.ʃənz

recommendations

推薦
Meaning
Suggestions or proposals as to the best course of action.
Example
The commission submitted their recommendations.
委員会はその推薦を提出しました。
B2 noun /'ræd.ɪʃ/

Radish

ラディッシュ
Meaning
a small pungent edible root vegetable with white or red skin
Example
The farmer harvested fresh radishes from the garden.
農家は庭から新鮮なラディッシュを収穫しました。
C1 verb /rɪˈtɑːrd/

retard

遅らせる / 減速する
Meaning
to delay or slow down the progress of something
Example
Lack of funds may retard the development of the project.
資金不足はプロジェクトの進展を遅らせる可能性があります。
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。
B1 adjective /rɪˈmeɪnɪŋ/

remaining

残り
Meaning
still existing or left after others are gone or dealt with
Example
There were only a few remaining tickets for the concert.
コンサートのチケットは残りわずかでした。
C1 noun /ˈriːkɔːrs/

recourse

助け, 対処
Meaning
a source of help or protection in a difficult situation
Example
The students had no recourse but to appeal to the principal.
学生たちは校長に訴える以外に方法がなかった。
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 verb /rɪˈtriːv/

retrieve

取り戻す
Meaning
to get something back that was lost or taken; to recover
Example
She managed to retrieve her lost phone from the taxi.
彼女はタクシーから失われた電話を取り戻すことができました。
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。
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 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。
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。
C1 noun /ˈredʒ.ɪ.mən/

regimen

健康促進または回復のために処方された治療法、ライフスタイル、または食事
Meaning
A prescribed course of medical treatment, way of life, or diet for the promotion or restoration of health.
Example
A strict exercise regimen improves overall fitness.
厳格な運動レジメンは、全体的なフィットネスを向上させます。
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。
C1 adjective /ˈroʊtəri/

rotary

回転式
Meaning
Relating to or characterized by rotation; revolving around an axis.
Example
The machine uses a rotary engine to function efficiently.
その機械は効率的に動作するためにロータリーエンジンを使用しています。
C1 adjective /rɪˈɡrɛtfəl/

regretful

後悔している
Meaning
feeling or showing sadness or disappointment about something that has happened or been done
Example
She gave him a regretful smile as she turned away.
彼女は振り返りながら後悔している笑顔を彼に向けた。
C1 noun /rɪˌtæl.iˈeɪ.ʃən/

Retaliation

報復
Meaning
the action of returning a military attack; counterattack; revenge for an injury or wrong
Example
The country threatened retaliation against any act of aggression.
その国はあらゆる攻撃行為に対して報復を予告しました。
A2 adjective /rɪtʃ/

Rich

裕福な; お金持ちの; 貴重な
Meaning
having a lot of money or valuable possessions; abundant in nutrients or flavor
Example
The rich businessman donated money to the charity.
裕福な実業家がチャリティーに寄付をしました。
C1 verb /rɪˈmjuːnəreɪt/

remunerate

報酬を支払う
Meaning
To pay someone for services or work done.
Example
The company will remunerate employees fairly for their overtime.
会社は残業に対して従業員に公正な報酬を支払います。
B1 noun /ˌrɛzəˈluːʃən/

resolution

解決, 決議
Meaning
The action of solving a problem, dispute, or contentious matter.
Example
The resolution of the issue requires careful planning and action.
問題の解決には慎重な計画と行動が必要です。
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。
C2 adjective /rɪˈfʌldʒənt/

refulgent

輝く
Meaning
Shining brightly; radiant.
Example
The refulgent sun lit up the entire valley.
輝く太陽が谷全体を照らした。
B2 adjective /ˈroʊlɪŋ/

rolling

転がる
Meaning
moving in gentle undulations; moving forward by turning over and over
Example
They drove through the rolling hills of the countryside.
彼らは田舎の転がる丘を通り抜けました。
B2 noun /rɪb/

Rib

あばら骨
Meaning
one of the curved bones that protect the chest and lungs
Example
He broke his rib in the accident.
彼は事故であばら骨を折った。
C1 verb /ræsp/

rasp

Meaning
to speak in a rough, harsh voice or to scrape with a coarse sound
Example
He rasped out a warning before collapsing.
C1 verb/noun /ˈrɛlɪʃ/

relish

楽しむ / 調味料
Meaning
to greatly enjoy; also a condiment or sauce
Example
She relished the opportunity to travel abroad.
彼女は海外旅行の機会を大いに楽しんでいました。
B1 noun /ˈrʌbər/

rubber

幸福
Meaning
a tough elastic substance made from the latex of tropical plants or synthetically, used for making tires, boots, and other products.
Example
The tires are made of natural rubber.
彼女は賞を受け取ったとき、自分の幸福を隠すことができませんでした。
C2 noun /rɪˈsɪdɪˌvɪzəm/

recidivism

Meaning
The tendency of a convicted criminal to reoffend or relapse into criminal behavior.
Example
The government introduced new programs to reduce recidivism among former inmates.
C1 noun /riˈæktənt/

reactant

Meaning
A substance that takes part in and undergoes change during a chemical reaction.
Example
Oxygen is a reactant in the process of combustion.
C2 verb /rɪˈkjʊə/

recure

再治療する
Meaning
to cure again; to remedy a second time
Example
The doctor had to recure the wound after it reopened.
医者は傷が再び開いた後、傷を再治療する必要がありました。
C1 verb /rɪˈnɛɡ/

renege

約束を破る
Meaning
to go back on a promise, agreement, or commitment
Example
The company reneged on its promise to increase wages.
その会社は賃金を引き上げるという約束を破りました。
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。
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。
B2 noun /rɪˈbel.jən/

Rebellion

反乱
Meaning
an act of armed resistance to an established government or leader
Example
The rebellion against the king lasted for three years.
王に対する反乱は3年間続いた。
C1 noun /ˈrɛnɪˌɡeɪd/

renegade

裏切り者
Meaning
a person who deserts or betrays an organization, country, or principles
Example
He was labeled a renegade after leaving the party and criticizing its policies.
彼は党を離れ、その政策を批判した後、裏切り者と見なされた。
C1 adjective /ˈreɪ.si/

racy

刺激的
Meaning
Lively, entertaining, or slightly shocking (especially in a sexual way).
Example
The novel was full of racy dialogues.
その小説は刺激的な対話で満ちていた。
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。
C1 noun /ˈrez.ɪ.dənt ˈkəʊ.ɔː.dɪ.neɪ.tər/

resident coordinator

居住者コーディネーター
Meaning
A local administrator or official who coordinates activities in a specific region.
Example
The resident coordinator welcomed all representatives.
居住者コーディネーターは全ての代表者を歓迎しました。
C2 noun /rʌmp/

Rump

尻; お尻; 背中の下部
Meaning
the hindquarters or buttocks; the lower back area
Example
The horse injured its rump during the fall.
その馬は転倒した際にお尻を痛めました。
C2 adjective /ˈroʊziət/

roseate

バラ色の、楽観的な
Meaning
Having a pink color; optimistic or idealistic.
Example
She looked at the future with roseate optimism.
彼女はローズ色の楽観主義で未来を見ました。
C1 noun /ˈrɛz.ə.nəns/

resonance

共鳴
Meaning
A deep, reverberating sound or a quality of evoking response.
Example
His speech had a deep resonance with the audience.
彼のスピーチは観客に深い共鳴を与えた。
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。
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。
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 verb /rɪˈsɜːrdʒ/

resurge

再興
Meaning
To rise, increase, or become active again after a decline.
Example
Interest in traditional crafts has begun to resurge.
伝統工芸に対する関心が再び高まり始めています。
A2 noun /ˈriː.zənz/

reasons

理由
Meaning
Causes, explanations, or justifications for an action or event.
Example
Reasons for pollution need addressing urgently.
汚染の理由は緊急に対処する必要があります。
B2 noun /ˈreb.əl/

Rebel

反逆者
Meaning
a person who resists authority or control
Example
The young rebel refused to follow the school rules.
その若い反逆者は学校の規則に従うことを拒否した。
C2 verb /rɪˈpruːv/

reprove

叱る
Meaning
to criticize or correct someone gently or disapprove of their actions
Example
The teacher reproved the student for being late.
先生は遅刻した生徒を叱りました。
C2 verb /ˈrævəl/

ravel

絡まる / 解く
Meaning
to tangle or complicate; to untangle or unravel depending on context
Example
She began to ravel the loose threads of the sweater.
彼女はセーターのゆるい糸をほどき始めました。
B2 verb /rɪˈnuː/

renew

Meaning
to make something new again or extend its period of validity
Example
I need to renew my passport before traveling.
B2 adjective /rɪˈstrɪk.tɪd/

Restricted

制限された; 制御された; 制限付き
Meaning
limited or controlled; subject to restrictions
Example
Access to this area is restricted to authorized personnel only.
このエリアへのアクセスは、認可されたスタッフのみが制限されています。
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 verb /ˌriːkriˈeɪt/

recreate

再創造する
Meaning
to create or produce something again, especially a new version of something lost or destroyed
Example
The team recreated the lost dataset from backups.
チームはバックアップから失われたデータセットを再作成しました。
A2 noun /ˈriːdər/

reader

読者
Meaning
a person who reads or who is capable of reading
Example
She is a fast reader, finishing books in a day.
彼女は速読者で、1日で本を読み終えます。
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。
B2 noun /ˌrek.riˈeɪ.ʃən/

Recreation

レクリエーション活動; 何かを再び存在させるプロセス
Meaning
an activity that is done for enjoyment; the process of making something exist again
Example
The park provides recreation facilities for children and adults.
公園は子供と大人のためにレクリエーション施設を提供しています。
C2 noun /rɪˈsɪʒən/

rescission

契約解除
Meaning
the cancellation or annulment of a law, contract, or agreement
Example
The rescission of the contract left both parties disappointed.
契約の解除により、双方は失望しました。
C2 adjective /rɪˈfræɡəbəl/

refragable

反論可能な
Meaning
Capable of being refuted or disproved.
Example
His argument was weak and easily refragable.
彼の議論は弱く、簡単に反論可能だった。
C1 noun ˈrəʊvə

rover

ローバー
Meaning
A vehicle for driving over rough terrain, especially one driven by remote control over extraterrestrial terrain.
Example
The rover landed on Mars to begin its exploration.
ローバーは火星に着陸し、探査を開始しました。
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.
C1 adjective /rɪˈpen.tənt/

Repentant

後悔している; 反省している; 悔いている
Meaning
feeling or expressing sincere regret and remorse; sorry for one's actions
Example
The repentant thief returned the stolen money.
後悔している泥棒は盗んだお金を返しました。
B2 noun/adjective /rɪˈpʌblɪkən/

republican

共和党員
Meaning
a member or supporter of a republican political party or system
Example
The republican candidate won the election.
リパブリカン候補者は選挙に勝利しました。
C1 verb /rɪˈbʌf/

rebuff

拒絶する
Meaning
to reject or refuse in a sharp or abrupt way
Example
She rebuffed his invitation to dinner.
彼女はディナーの招待を断った。
C1 adjective /ˌrɛprɪˈhɛnsəbl̩/

reprehensible

非難すべき
Meaning
Deserving strong criticism or blame.
Example
His dishonest actions were truly reprehensible.
彼の不誠実な行動は本当に非難すべきものでした。
C2 adjective /roʊn/

roan

ロアン馬
Meaning
denoting an animal, especially a horse, having a coat of mixed colors, typically reddish-brown and white
Example
The rider mounted a roan horse with a speckled coat.
騎手は斑点のあるコートを持ったロアン馬に乗った。
C1 noun ˌræʃ.ən.əl.ɪˈzeɪ.ʃən

rationalization

合理化
Meaning
The practice of finding reasons for behavior or actions that are not the real reasons.
Example
His rationalization of the mistake was not convincing.
彼の間違いの合理化は説得力がなかった。
C1 adjective /rɪˈpres.ɪv/

Repressive

抑圧的な
Meaning
restraining freedom or preventing self-expression; oppressive
Example
The repressive government banned all forms of protest.
抑圧的な政府はすべての抗議の形態を禁止しました。
B1 noun /rɪˈvɪʒ.ən/

Revision

リビジョン; 修正版
Meaning
the action of revising; a revised edition or form of something; review of subject matter
Example
The students spent hours doing revision for their final exams.
学生たちは最終試験のために数時間リビジョンを行った。
C1 verb /ˈræʃənaɪz/

rationlize

合理化する
Meaning
to justify or explain something with logical reasons, even if not appropriate or true
Example
He tried to rationlize his mistake by blaming the system.
彼はシステムを責めて自分のミスを合理化しようとした。
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。
C2 verb /rɪˈsɪnd/

rescind

取り消す
Meaning
to revoke, cancel, or repeal a law, order, or agreement
Example
The company decided to rescind the job offer.
その会社は仕事のオファーを取り消すことを決定しました。
C2 noun/verb /ˈrɛkəmˌpɛns/

recompense

賠償
Meaning
to compensate someone for loss or harm suffered; compensation given for damage or injury
Example
The company offered financial recompense to the injured worker.
その会社は負傷した労働者に対して金銭的な賠償を提供しました。
B2 noun /ˈrɛlɪvəns/

relevance

関連性
Meaning
the quality or state of being closely connected or appropriate
Example
The relevance of the information was clear to everyone.
情報の関連性はすべての人に明確でした。
B2 noun rɪˈzɪl.i.əns

resilience

レジリエンス
Meaning
The ability to recover quickly from difficulties; toughness.
Example
Testing the resilience of wood is crucial.
木材のレジリエンスをテストすることは非常に重要です。
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。
B2 verb /ˈreɪn.dʒɪŋ/

ranging

変動する
Meaning
Extending or varying between limits.
Example
The temperatures are ranging from 15 to 30 degrees this week.
今週の気温は15度から30度の間で変動しています。
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 adverb /ˈriː.sənt.li/

Recently

最近
Meaning
in the recent past; not long ago
Example
I recently moved to a new apartment.
私は最近新しいアパートに引っ越しました。
B2 noun rɪˈkruːt.mənt

recruitment

採用
Meaning
The action of finding new people to join an organization or support a cause.
Example
Recruitment strengthens the workforce.
採用は労働力を強化します。
B2 adjective /ˈrɪski/

risky

Meaning
Involving the possibility of danger, harm, or loss
Example
Investing in that startup is risky but could bring high rewards.
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。
C1 verb /ˈrævɪdʒ/

ravage

荒廃させる
Meaning
to cause severe and extensive damage or destruction
Example
The hurricane ravaged the coastal villages.
ハリケーンは沿岸の村を荒廃させた。
C2 adjective /ˈruːmi/

rheumy

涙目
Meaning
Watery, especially referring to the eyes.
Example
His rheumy eyes showed signs of age and fatigue.
彼の涙目は年齢と疲れの兆しを示していた。
B1 adjective /rɪˈpiː.tɪd/

Repeated

繰り返しの; 多くの回発生する
Meaning
done again; happening again; occurring multiple times
Example
He made repeated attempts to contact her.
彼は何度も彼女に連絡を試みました。
B1 noun /rɪˈfjuːz/

Refuse

ゴミ; 拒否
Meaning
waste material; garbage; to decline or reject something
Example
Please put the refuse in the designated bins.
指定されたゴミ箱にゴミを入れてください。
C2 adjective /ˈrɛd.ələnt/

redolent

Meaning
having a strong pleasant smell; strongly reminiscent or suggestive of something
Example
The kitchen was redolent of spices and fresh herbs.
C1 adjective /ˈriːɡəl/

regal

王室の
Meaning
Resembling or fit for a king; majestic or royal.
Example
The queen entered the hall with a regal presence.
女王は王室のような存在感でホールに入った。
C1 noun /ˈriːpər/

reaper

作物を刈り取り集める人または機械
Meaning
a person or machine that cuts and gathers crops
Example
The reaper moved slowly through the golden fields.
リーパーは金色の畑をゆっくりと進んでいきました。
B2 verb /ˈruːɪn/

ruin

台無しにする
Meaning
to destroy or damage beyond repair; to spoil completely
Example
Heavy rain could ruin our picnic plans.
強い雨が私たちのピクニックの計画を台無しにするかもしれません。
B2 noun /ˌriː.əˈʃʊr.əns/

Reassurance

安心
Meaning
comfort or confidence given to someone to remove their fears or doubts
Example
She needed reassurance that everything would be okay.
彼女はすべてがうまくいくことを確認するために安心が必要でした。
C1 noun /ˈruːbrɪk/

rubric

評価基準 / 指針
Meaning
A set of instructions, rules, or a heading in a document, often used for grading criteria.
Example
The teacher provided a grading rubric for the assignment.
教師は課題のための評価基準を提供しました。
B1 verb /ˈreskjuː/

rescue

救助する
Meaning
to save someone or something from danger or harm
Example
The firefighters rescued the cat from the tree.
消防士は木から猫を救助しました。
B2 adjective ˈræd.ɪ.kəl

radical

伝統的な信念やシステムに反する根本的な変化をもたらす能力がある
Meaning
Capable of bringing fundamental changes opposite to conventional beliefs or systems.
Example
The leader proposed radical economic reforms.
リーダーはラディカルな経済改革を提案しました。
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 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 noun /ˈraɪdər/

rider

ライダー
Meaning
A person who rides a horse, bicycle, motorcycle, or other vehicle.
Example
The rider fell off the horse.
ライダーは馬から落ちました。
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。
C2 verb /rɪˈkwaɪt/

requite

返す
Meaning
to return or repay a favor, service, or feeling
Example
She requited his kindness with a thoughtful gift.
彼女は彼の親切に思慮深い贈り物で報いました。
B2 adjective /rɪˈfreʃ.ɪŋ/

Refreshing

さわやか
Meaning
making one feel energized and renewed; pleasantly new or different
Example
The cool breeze was refreshing after the hot day.
暑い一日後の涼しい風はさわやかだった。
C1 noun /ˈrɪɡər/

rigor

厳格さ
Meaning
strictness, severity, or demanding conditions
Example
The training was carried out with great rigor.
訓練は大変厳格に行われました。
C1 adverb /rɪˈspek.tə.bli/

Respectably

敬意を表して; きちんと;
Meaning
in a way that is worthy of respect; decently; properly
Example
She was dressed respectably for the interview.
彼女は面接のためにきちんとした服装をしていた。
C1 noun /ˌrɛtrɪˈbjuːʃən/

retribution

報復, 罰
Meaning
punishment inflicted as vengeance for a wrong or crime
Example
The villagers demanded retribution for the crime committed.
村人たちは犯された犯罪に対して報復を要求しました。
B2 noun /ˈreɪ.zən/

Raisin

レーズン
Meaning
dried grape
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ました。
B2 verb /rɪˈzaɪd/

reside

住む
Meaning
to live or dwell in a particular place
Example
They reside in a large house near the river.
彼らは川の近くの大きな家に住んでいます。
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。
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。
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。
C1 noun/verb /rɪˈlæps/

relapse

再発
Meaning
to return to a worse condition, especially after improvement; a deterioration after recovery
Example
After months of progress, he suffered a relapse.
数ヶ月の進歩の後、彼は再発しました。
B2 verb /ˈroʊ.teɪt/

rotate

回転する
Meaning
to turn around a central point or axis
Example
The Earth rotates on its axis once every 24 hours.
地球は24時間ごとに自転します。
B2 adjective /ˈrɑː.ki/

Rocky

岩だらけの; 不安定な; 難しい
Meaning
full of rocks; unsteady; difficult
Example
The rocky path made hiking difficult for the tourists.
岩だらけの道は観光客のハイキングを難しくしました。
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。
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。
C1 verb /riːˈpeɪ.tri.eɪt/

repatriate

帰還させる
Meaning
To return someone to their own country, often after war or imprisonment.
Example
The government worked to repatriate the refugees safely.
政府は難民を安全に帰国させるために尽力しました。
B2 noun /rɪˈmaɪndər/

reminder

リマインダー
Meaning
something that helps you remember a fact, event, or action that you need to do or recall
Example
He set a reminder to call his mother on her birthday.
彼は母親の誕生日に電話するためにリマインダーを設定しました。
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。