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All Vocabulary Cards All Vocabularies
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 adjective /riˈæk.tɪv/

Reactive

反応的; 化学的に活発
Meaning
responding to situations rather than initiating them; chemically active
Example
The company took a reactive approach to customer complaints.
会社は顧客の苦情に反応的なアプローチを採用しました。
B2 noun /rɒd/

rod

金属または木材の細長い棒
Meaning
a thin straight bar, especially of metal or wood
Example
He used an iron rod to support the structure.
彼は構造を支えるために鉄のロッドを使いました。
C1 adjective /ˈrænsɪd/

rancid

腐った
Meaning
having a bad taste or smell due to being old or spoiled (especially fats or oils)
Example
The butter had gone rancid after being left out too long.
バターは外に長時間置かれて腐ってしまった。
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。
A2 verb /ˈriːəlaɪz/

realize

気づく
Meaning
to become aware of; to understand clearly; to achieve or make real
Example
I didn't realize how late it was until I checked the clock.
時計を見るまで、こんなに遅いとは気づかなかった。
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。
B1 verb /rɪˈflekt/

reflect

反映する
Meaning
to think deeply about; to mirror back light or image
Example
The mirror reflects her beautiful face.
鏡は彼女の美しい顔を反映しています。
B2 adjective /ˌrez.ɪˈden.ʃəl/

residential

住宅の
Meaning
Designed for people to live in.
Example
The institution was fully residential.
その施設は完全に住宅のものでした。
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。
B2 verb rɪˈzaɪn

resign

辞任する
Meaning
Voluntarily leave a job or other position.
Example
Ministers were forced to resign.
大臣たちは辞任を余儀なくされました。
C1 adjective /ˈrʌɡ.ɪd/

Rugged

でこぼこで不規則な; 不規則な表面を持つ; 強くて丈夫な
Meaning
rough and uneven; having a rough irregular surface; tough and strong
Example
The hikers crossed the rugged mountain terrain.
ハイカーたちは荒れた山岳地帯を越えた。
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 noun /rʌsk/

Rusk

乾燥ビスケット; トーストパン
Meaning
a hard, dry biscuit or twice-baked bread; a type of crisp, sweet biscuit
Example
The baby enjoyed eating the soft rusk with milk.
赤ちゃんはミルクと一緒に柔らかいラスクを食べるのが好きでした。
B1 adjective /ˈrel.ə.tɪv/

Relative

相対的
Meaning
considered in comparison to something else; not absolute; comparative
Example
The cost of living is relative to your income level.
生活費はあなたの収入レベルに対して相対的です。
B1 noun /ruːt/

Root

根; 起源; 基本原因; ルート
Meaning
the part of a plant that grows underground; the basic cause, source, or origin of something
Example
We need to find the root of this problem to solve it permanently.
この問題の根本原因を見つけて、永続的に解決する必要があります。
B1 noun /rɪˈsɔːrs/

resource

資源
Meaning
A supply of materials, money, or assets that can be used when needed.
Example
Water is a vital natural resource.
水は重要な自然資源です。
C2 noun /ˈræɡəmʌfɪn/

ragamuffin

ぼろぼろの子供
Meaning
A person, typically a child, in ragged, dirty clothes.
Example
The little ragamuffin begged for food on the street.
小さなぼろぼろの子供が通りで食べ物を求めていた。
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.
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。
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。
C1 noun /rɪˈmɪʃən/

remission

Meaning
A temporary or permanent decrease or disappearance of disease symptoms; forgiveness of sins or debts.
Example
The patient’s cancer is in remission after the treatment.
C1 noun ˌrɛk.əˈlɛk.ʃən

Recollection

記憶
Meaning
Remembering past events or information
Example
His recollection of childhood memories was vivid.
彼の子供時代の記憶は鮮明だった。
B1 noun /rɪˈpɔːrtər/

reporter

レポーター
Meaning
a person who reports news or information
Example
The reporter interviewed several people at the scene.
レポーターは現場で数人にインタビューしました。
C2 adjective /rɪˈmɪs/

remiss

怠慢
Meaning
Negligent in performing a duty or responsibility.
Example
The manager was remiss in not checking the financial reports carefully.
マネージャーは財務報告書を慎重に確認しなかったことで怠慢だった。
B1 verb rɪˈdjuːst

reduced

減らす
Meaning
Make smaller or less in amount, degree, or size.
Example
Singapore has reduced plastic usage significantly.
シンガポールはプラスチックの使用を大幅に減らしました。
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 /rɪˈpaɪn/

repine

嘆く
Meaning
To feel or express discontent or to long for something.
Example
She did not repine at her misfortune but worked harder to improve her life.
彼女は不幸を嘆かず、より一生懸命に働いて生活を向上させました。
B2 verb /rɪˈzɛmbəl/

resemble

似ている
Meaning
to look like or be similar to something or someone
Example
She resembles her mother in both appearance and mannerisms.
彼女は見た目と仕草の両方で母親に似ています。
A2 noun, verb /ˈriːzən/

reason

理由、原因
Meaning
A cause, explanation, or justification for an action or event; to think or argue logically.
Example
There is no reason to be upset.
怒る理由はありません。
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。
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。
B1 adjective /rɪˈmoʊt/

remote

遠隔
Meaning
Situated far from the main centers of population; distant.
Example
They stayed in a remote village during their trip.
彼らは旅行中に遠隔の村に泊まりました。
C1 noun /rɪdʒ/

ridge

山の稜線または頂上
Meaning
a long, narrow hilltop, mountain range, or raised strip
Example
We walked along the mountain ridge.
私たちは山脈の稜線に沿って歩きました。
B1 adjective /ˈriː.zən.ə.bəl/

Reasonable

合理的; 公正で実用的; 高すぎない; 論理的
Meaning
fair and sensible; not too expensive; logical and practical
Example
The hotel offers reasonable prices for quality accommodation.
そのホテルは品質の高い宿泊施設に対して合理的な価格を提供しています。
B2 verb /rɪˈvaɪv/

revive

蘇生する
Meaning
To bring back to life, consciousness, or activity.
Example
The paramedics managed to revive the unconscious man.
救急隊員は意識不明の男性を蘇生させることに成功した。
B1 noun rɪˈflɛkʃən

reflection

反射
Meaning
Serious thought or consideration about something.
Example
The reflection of the past filled his heart with sadness.
過去の反射が彼の心を悲しみに満たしました。
C1 verb /rɪˈmɪt/

remit

送金する / 免除する
Meaning
To send money in payment or as a gift; to cancel or refrain from exacting a debt or punishment.
Example
He promised to remit the payment by the end of the week.
彼は週の終わりまでに支払いを送金すると約束しました。
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。
B2 verb /riːˈɔːrɡənaɪz/

reorganize

再編成する
Meaning
to arrange something again in a different way for greater efficiency or order
Example
The manager decided to reorganize the team structure.
マネージャーはチームの構造を再編成することに決めました。
C1 adjective /ˈrɛvərənt/

reverent

敬虔な
Meaning
Showing deep and solemn respect.
Example
They listened to the speech in a reverent silence.
彼らは敬虔な沈黙の中でスピーチを聞いた。
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。
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。
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 noun ˌriːˈstrʌk.tʃər.ɪŋ

restructuring

再構築
Meaning
The action of organizing something differently.
Example
The company underwent restructuring to improve efficiency.
会社は効率を高めるために再構築を行った。
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。
C2 noun /ˈreɪdɪks/

radix

基数
Meaning
the base or root of something; the number on which a system of numeration is built
Example
In mathematics, the decimal system has a radix of ten.
数学では、十進法の基数は十です。
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。
C2 adjective /rɪˈtɪkjʊlət/

reticulate

網状
Meaning
Having a net-like pattern or structure.
Example
The leaf had a reticulate pattern of veins.
葉は網目模様の静脈がありました。
A2 noun rɪˈsɜːtʃ

research

研究
Meaning
The systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.
Example
Research on radio waves began earlier in India.
ラジオ波の研究はインドで早く始まりました。
B1 adjective, noun /ˈroʊmən/

roman

ローマの / 古代ローマの市民
Meaning
relating to Rome or its people; a citizen of ancient Rome
Example
The Roman Empire influenced much of modern civilization.
ローマ帝国は現代文明に多大な影響を与えました。
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.
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。
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 /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。
C1 verb /rɪˈfjuːt/

refute

反論する
Meaning
To prove a statement, argument, or theory to be false or invalid.
Example
The lawyer refuted the witness's testimony with solid evidence.
弁護士は証人の証言を確かな証拠で反論しました。
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。
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。
C2 noun /rɪˈdʒɔɪndər/

rejoinder

返答
Meaning
a quick or witty reply; a response to a remark or argument
Example
His sharp rejoinder silenced the crowd.
彼の鋭い返答が群衆を沈黙させた。
C2 adjective /rɪˈfjuː.tə.bəl/

Refutable

反証可能
Meaning
capable of being proven wrong or false; able to be disproved
Example
His theory was refutable because it could be tested experimentally.
彼の理論は実験的にテストできるので反証可能でした。
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。
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。
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。
C1 noun /rɪˈmɛmbrəns/

remembrance

記憶
Meaning
the act of remembering or honoring someone or something
Example
A service was held in remembrance of the fallen soldiers.
戦死した兵士たちを記憶するための式典が行われた。
B2 verb /rɒt/

rot

腐る
Meaning
to decay or decompose; to become corrupt
Example
The fruit will rot if left in the sun.
果物は日光に当たると腐ります。
C2 verb /ˌrɛprɪˈhɛnd/

reprehend

非難する
Meaning
to express disapproval or criticism of someone or something
Example
The teacher reprehended the student for being dishonest.
先生は不正直なことで生徒を叱りました。
B1 noun /ruːt/

route

Meaning
a way or course taken to get from one place to another
Example
The best route to the airport is through the highway.
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。
C1 noun rɪˈdʌndənsi

redundancy

冗長性、過剰
Meaning
The state of being not or no longer needed or useful; superfluousness.
Example
The redundancy in the company's workforce led to many layoffs.
会社の労働力の冗長性は多くの解雇を引き起こしました。
C1 adjective /ˈreɡ.jʊ.lə.tər.i/

Regulatory

規制
Meaning
Having the power to control or govern something through rules and regulations.
Example
The government enforces regulatory policies for financial stability.
政府は金融安定性のために規制政策を実施しています。
C1 adjective /raɪf/

rife

蔓延している
Meaning
widespread or common, often in a negative sense
Example
Corruption was rife in the old government system.
腐敗は古い政府制度に蔓延していた。
B1 adverb /ˈriː.zən.ə.bli/

Reasonably

合理的に; 適度に;
Meaning
in a sensible way; fairly; to a moderate degree
Example
The hotel room was reasonably priced for the location.
そのホテルの部屋は場所に対して合理的な価格で提供されていました。
C2 noun /red ˌəʊ.liˈæn.dər/

Red oleander

赤いオリンダー
Meaning
a poisonous flowering shrub with bright red or pink flowers
Example
The red oleander blooms throughout the summer months.
赤いオリンダーは夏の数ヶ月間咲きます。
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。
B2 noun /reɪˈʒiːm/

regime

政権
Meaning
a system or form of government, often authoritarian
Example
The military regime controlled the country for decades.
軍事政権は数十年間国を支配していました。
B2 adjective /ˈrɪɡ.ər.əs/

rigorous

厳格な
Meaning
Extremely thorough and demanding in analysis or practice.
Example
A rigorous study plan helps students achieve better results.
厳格な学習計画は、学生がより良い結果を得るのに役立ちます。
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.
B2 adjective /ˈruː.mi/

Roomy

広々とした; 広いスペースのある
Meaning
spacious; having a lot of room
Example
The apartment is very roomy with spacious bedrooms.
アパートメントは広々としており、広いベッドルームがあります。
B2 noun /rɪˈmuː.vəl/

Removal

撤去; 除去; 解雇;
Meaning
the action of taking something away or eliminating it; dismissal from office
Example
The removal of the old furniture took all day.
古い家具の除去に一日中かかりました。
B2 verb /rɪˈteɪn/

retain

保持する
Meaning
to keep possession of something
Example
The company decided to retain its experienced employees.
会社は経験豊富な従業員を保持することに決めました。
C1 verb rɪˈlɪŋ.kwɪʃ

relinquish

放棄する
Meaning
To give up any authority, responsibility, or property.
Example
He decided to relinquish his position as CEO.
彼はCEOのポジションを放棄することに決めました。
B1 adjective /rɪˈleɪ.tɪd/

Related

関連; 結びついている
Meaning
connected; associated; having a connection or relationship
Example
These two problems are closely related to each other.
これらの二つの問題はお互いに密接に関連しています。
C1 noun /ˈræʃən/

ration

配給
Meaning
a fixed amount of something, especially food, officially allowed to each person
Example
During the war, each family received a weekly ration of rice.
戦争中、各家族は毎週一定量のご飯を配給されました。
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。
B1 adjective /ˌriːəˈlɪstɪk/

realistic

現実的
Meaning
having or showing a sensible and practical idea of what can be achieved or expected
Example
She gave a realistic estimate of the project's cost.
彼女はプロジェクトのコストの現実的な見積もりを出した。
B2 noun /rɪˈzembləns/

Resemblance

類似
Meaning
the state of being alike or similar; similarity in appearance or character
Example
There's a strong resemblance between the two sisters.
二人の姉妹の間には強い類似があります。
B2 verb /ˈrʌm.bəl/

rumble

幸せ
Meaning
to make a continuous deep, resonant sound
Example
Thunder rumbled in the distance.
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。
B1 verb /rɪˈvjuː/

review

レビュー
Meaning
to examine or assess something again; to write a critical evaluation
Example
I need to review my notes before the exam.
試験前にノートをレビューする必要があります。
C1 adjective /rɪˈper.ə.bəl/

Repairable

修理可能
Meaning
able to be fixed or mended; capable of being repaired
Example
The broken phone is repairable with the right parts.
壊れた電話は正しい部品で修理可能です。
C2 adjective /rəˈkoʊkoʊ/

rococo

ロココ
Meaning
characterized by ornate detail and elaborate decoration, especially in art, architecture, and design
Example
The palace was decorated in a lavish rococo style.
宮殿は豪華なロココ様式で装飾されていました。
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。
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 verb /rɪˈzɑlv/

resolve

解決する
Meaning
to solve a problem; to decide firmly
Example
The manager resolves the conflict between employees.
マネージャーは従業員間の対立を解決します。
C1 verb /ˌriːəˈfɜːrm/

reaffirm

再確認する
Meaning
To state again strongly; to confirm or strengthen a statement or belief.
Example
The president reaffirmed his commitment to education reform.
大統領は教育改革への取り組みを再確認した。
C1 noun /rɪˈfɜːrər/

referrer

紹介者
Meaning
a person who directs someone to another person or service
Example
The referrer earned a bonus for recommending a new client.
紹介者は新しい顧客を推薦したことでボーナスを得ました。
C2 adjective /ˈrɛkənˌsaɪləbl̩/

reconcilable

Meaning
Capable of being resolved or made consistent.
Example
Their differences are reconcilable with honest communication.
A2 noun /rɪˈzʌlt/

result

結果
Meaning
a consequence, effect, or outcome of something
Example
The result of the test was excellent.
テストの結果は素晴らしかった。
C1 adjective /ˈræb.ɪd/

rabid

狂信的
Meaning
Having extreme or fanatical support for something; relating to or suffering from rabies.
Example
He was a rabid fan of the football team.
彼はサッカーチームの狂信的なファンだった。
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 adjective /rɪˈdʌn.dənt/

redundant

冗長な
Meaning
Not or no longer needed or useful; superfluous.
Example
The report contained redundant information.
その報告書には冗長な情報が含まれていました。
C1 noun ˈrɛp.ə.twɑːr

repertoire

レパートリー
Meaning
A stock of plays, dances, or pieces that a company or a performer knows or is prepared to perform.
Example
The actor's repertoire includes both comedy and drama.
俳優のレパートリーにはコメディとドラマが含まれています。
B1 verb /rɪˈdʒekt/

reject

拒否する
Meaning
to refuse to accept or consider something
Example
The committee decided to reject the proposal.
委員会は提案を拒否することに決めました。
B1 noun /rɪˈkwɛst/

request

Meaning
a formal or polite demand for something
Example
She made a request for additional time to complete the project.
C1 noun ˌriː.pɚˈkʌʃ.ənz

repercussions

影響
Meaning
The unintended consequences or effects of an action or event.
Example
The new policy had unintended repercussions on the economy.
新しい政策は経済に予期しない影響を与えました。
B2 verb /ˈræl.i/

rally

Meaning
to come together for a common purpose or to recover strength or spirit
Example
The team rallied after halftime and won the match.
B2 verb /rɪˈstrɪkt/

restrict

制限する
Meaning
To limit the size, amount, or range of something.
Example
The government decided to restrict the use of plastic bags.
政府はプラスチック袋の使用を制限することを決定しました。
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.
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。
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 adjective /ˈruː.tɪd/

Rooted

根付いた
Meaning
deeply established; firmly fixed
Example
His beliefs are deeply rooted in tradition.
彼の信念は伝統に深く根ざしている。
B2 adjective /ˈrest.ləs/

Restless

落ち着きのない
Meaning
unable to rest or relax; constantly moving or fidgeting
Example
The child was restless during the long car journey.
長い車の旅で子供は落ち着きがなかった。
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。
C1 verb /ˈrʌf.l̩/

ruffle

Meaning
to disturb the smoothness of something; to annoy or upset someone
Example
The wind ruffled her hair.
B2 verb /ˌriːəˈʃʊr/

reassure

安心させる
Meaning
to say or do something to remove someone's doubts or fears
Example
The teacher reassured the students before the exam.
教師は試験前に生徒を安心させました。
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 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。
B1 noun rɔː mətɪˈrɪəlz

raw materials

原材料
Meaning
The basic material from which a product is made.
Example
The factory imports raw materials for production.
工場は生産のために原材料を輸入しています。
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。
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 /rɪd/

rid

取り除く
Meaning
to remove or get rid of something
Example
I need to rid the house of all the clutter.
家の中のすべてのゴミを取り除く必要があります。