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B2 verb /rɪp/

rip

裂ける
Meaning
to tear something quickly or violently
Example
He accidentally ripped his shirt on the fence.
彼はフェンスでシャツをうっかり裂けてしまいました。
C2 noun /ˌræproʊʃˈmɑːn/

rapprochement

関係修復
Meaning
The establishment or resumption of harmonious relations.
Example
The two countries signed an agreement that marked a new rapprochement.
二国は新しい関係修復を示す合意書に署名した。
C1 adverb /ˈrɪdʒɪdli/

Rigidly

厳格に; 柔軟性なしで
Meaning
in a strict, inflexible manner; without compromise
Example
The rules are rigidly enforced in this institution.
この機関ではルールは厳格に適用されます。
A2 noun /ˈreɪl.weɪ/

Railway

鉄道
Meaning
a track made of steel rails along which trains run; a system of tracks with trains, stations, and other facilities
Example
The railway connects major cities across the country.
鉄道は国内の主要な都市を結んでいます。
B2 adjective /ˈruːθ.ləs/

Ruthless

無慈悲な; 残酷な; 情け容赦ない
Meaning
showing no pity or compassion; cruel; merciless
Example
The ruthless dictator showed no mercy to his enemies.
その無慈悲な独裁者は、彼の敵に対して一切の慈悲を示さなかった。
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。
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。
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。
C1 adjective /ˈrek.wɪ.zɪt/

Requisite

必要な; 必須の
Meaning
made necessary by particular circumstances; required
Example
Good communication skills are requisite for this job.
この仕事には良いコミュニケーションスキルが必要です。
B1 noun rɪˈsɜː.tʃəz

researchers

研究者
Meaning
People who study and investigate to discover new information or facts.
Example
Researchers are working on innovative solutions.
研究者たちは革新的な解決策に取り組んでいます。
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 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。
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。
B2 adjective /ˈrɒt.ən/

Rotten

腐った; 悪い
Meaning
decayed; spoiled; bad
Example
The apple is rotten and should be thrown away.
リンゴは腐っていて、捨てるべきです。
B2 noun /rɪm/

rim

縁
Meaning
the outer edge or border of a circular object
Example
The coffee cup had a chip on its rim.
コーヒーカップの縁にひびが入っていました。
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 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 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。
B1 noun /ˈreɪlˌroʊd/

railroad

鉄道
Meaning
a track or system of tracks made of steel rails along which trains run
Example
The railroad connects the city to several nearby towns.
鉄道は都市といくつかの近くの町を結びつけています。
C1 verb /ˈruː.mɪ.neɪt/

ruminate

思索する, 反芻する
Meaning
to think deeply about something; to chew cud (for animals)
Example
She sat alone to ruminate on her decision.
彼女は自分の決断について一人で思索していた。
C1 verb /ˈræʃənəlaɪz/

rationalize

合理化する
Meaning
to attempt to explain or justify behavior or decisions with logical reasons, even if they are not true or appropriate
Example
She tried to rationalize her lateness by blaming the traffic.
彼女は交通渋滞を責めて、遅刻を合理化しようとした。
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。
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 adjective /rɪˈflektɪv/

Reflective

反射的; 思慮深い; 光や画像を反射できる
Meaning
thoughtful; contemplative; able to reflect light or images
Example
After the meeting, he was in a reflective mood.
会議の後、彼は反射的な気分だった。
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。
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 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。
C2 noun /ˈreɪləri/

raillery

友好的な冗談
Meaning
good-humored teasing or joking
Example
Their friendship was full of light-hearted raillery.
彼らの友情は軽い冗談で満ちていました。
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。
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。
A2 verb /ˈrɛkəɡnaɪz/

recognize

Meaning
To identify someone or something seen before; to acknowledge or accept.
Example
She did not recognize him in the crowd.
C1 verb /ˈrætɪfaɪ/

ratify

批准する
Meaning
to approve or confirm something officially, usually by law or formal consent
Example
The government ratified the trade agreement.
政府は貿易協定を批准しました。
C2 adjective /roʊˈtʌnd/

rotund

丸い
Meaning
round or plump in shape; full in sound
Example
The rotund cat struggled to climb the fence.
丸い猫はフェンスを登るのに苦労していた。
A2 noun ˈrɛlətɪvz

Relatives

親戚
Meaning
A person connected by blood or marriage; a kinsman or kinswoman.
Example
Relatives can help you build a complete family tree.
親戚はあなたが完全な家系図を作る手助けをしてくれるかもしれません。
C1 noun /ˈrep.lɪ.kə/

Replica

レプリカ
Meaning
an exact copy or model of something, especially one on a smaller scale
Example
The museum displayed a perfect replica of the ancient statue.
博物館は古代の彫像の完璧なレプリカを展示しました。
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。
A2 noun /ˈruːlər/

ruler

支配者; 定規
Meaning
A person who governs or controls a country; a straight-edged tool used for measuring or drawing lines
Example
The ruler drew a straight line on the paper while the king was a powerful ruler of his kingdom.
ルーラーは紙にまっすぐな線を引き、王は自分の王国の強力な支配者でした。
B2 noun /ræntʃ/

ranch

牧場
Meaning
a large farm where animals such as cattle or sheep are raised
Example
They own a huge cattle ranch in Texas.
彼らはテキサスで巨大な牧場を所有しています。
B2 noun /roʊst/

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。
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 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。
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 /rɪˈflɛktər/

reflector

反射器
Meaning
A surface or device that reflects light, heat, or sound, often used to direct beams or improve visibility.
Example
The cyclist attached a red reflector to the back of his bike for safety.
自転車のライダーは安全のために自分の自転車の後ろに赤い反射器を取り付けました。
C1 noun /ruːz/

Ruse

策略; 騙し
Meaning
an action intended to deceive someone; a trick or stratagem
Example
The thief used a clever ruse to distract the guard.
泥棒は警備員を惑わすために巧妙な策略を使った。
B2 noun /ˈruːmər/

Rumour

噂; ゴシップ; ニュース
Meaning
a currently circulating story or report of uncertain or doubtful truth; gossip
Example
There's a rumour that the company will close next month.
会社が来月閉鎖されるという噂があります。
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。
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 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。
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。
B1 verb /rɪˈleɪt/

relate

関連する
Meaning
to connect or show a link between; to tell a story
Example
She relates her experience to the audience.
彼女は観客に自分の経験を話します。
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。
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。
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。
B2 noun /ˌriː.ɪnˈfɔːrs.mənt/

reinforcement

強化
Meaning
Strengthening or supporting something, especially behavior or learning.
Example
Positive reinforcement helps in learning.
積極的な強化は学習に役立ちます。
C1 noun /rɪˈspɒndənt/

respondent

回答者
Meaning
A person who replies to something, especially in a survey or legal case
Example
The survey had over 1,000 respondents.
調査には1000人以上の回答者がいました。
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。
B2 adjective /ræʃ/

rash

軽率, 無謀
Meaning
Acting quickly without careful consideration; reckless.
Example
It was a rash decision to invest without research.
調査なしで投資するのは無謀な決断だった。
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。
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。
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。
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 /rɪˈsɜːrdʒənt/

resurgent

復活した
Meaning
Becoming strong, active, or popular again.
Example
The resurgent economy gave hope to many businesses.
復活した経済は多くのビジネスに希望を与えた。
C2 noun /ˈrɪɡməˌroʊl/

rigmarole

面倒なこと
Meaning
a long, complicated, and confusing process or story
Example
Getting a visa was such a rigmarole of paperwork and interviews.
ビザを取得するのは、書類とインタビューの面倒なことだった。
B2 noun rɪˈzentmənt

resentment

憤り
Meaning
Bitter indignation at having been treated unfairly.
Example
Resentment grew among the students.
学生の間で憤りが増大した。
C1 noun /ˈræmpɑːrt/

rampart

城壁
Meaning
a defensive wall of a castle or fort
Example
The soldiers stood on the rampart, watching the enemy approach.
兵士たちは城壁に立ち、敵が近づくのを見守っていました。
B2 adjective /ˈrek.ləs/

Reckless

無謀な; 無鉄砲な; 危険な;
Meaning
acting without thinking about consequences; careless; dangerous;
Example
His reckless driving caused a serious accident.
彼の無謀な運転は深刻な事故を引き起こしました。
C2 verb /rɪˈdaʊnd/

redound

貢献する
Meaning
to contribute greatly to a result or consequence, usually beneficial
Example
His hard work will redound to the success of the company.
彼の努力は会社の成功に貢献するでしょう。
B2 adjective /ˈreɪsɪst/

racist

人種差別主義者
Meaning
showing or feeling discrimination or prejudice against people of other races
Example
He was accused of making racist comments.
彼は人種差別的なコメントをしたとして非難された。
B2 noun /ˌrɪəlɪˈzeɪʃən/

realization

実現
Meaning
the act of becoming fully aware of something as a fact
Example
Her realization of the problem helped solve the issue.
彼女の問題の認識が問題解決に役立った。
A1 noun /ˈrɛst(ə)rɒnt/

restaurant

レストラン
Meaning
a place where meals are prepared and served to customers
Example
We went to the restaurant for dinner.
私たちは夕食のためにレストランに行きました。
A1 adjective /red/

Red

赤
Meaning
having the color of blood or fire; of the color red
Example
She wore a beautiful red dress to the party.
彼女はパーティーに美しい赤いドレスを着ていた。
B2 noun ˈrɛvənuː

revenue

収益
Meaning
Income, especially when of a company or organization.
Example
The company's revenue grew by 10% this year.
会社の収益は今年10%増加しました。
C1 noun /rɪˈpɛərə/

repairer

修理人
Meaning
a person whose job is to fix damaged or broken things
Example
The repairer fixed the broken washing machine quickly.
修理人は壊れた洗濯機をすぐに直した。
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 /ˈraɪtʃəsnəs/

righteousness

正義
Meaning
the quality of being morally right or justifiable
Example
His life was dedicated to righteousness and truth.
彼の人生は正義と真実に捧げられた。
C1 adjective rɪˈlɛntləs

relentless

容赦ない
Meaning
Oppressively constant; incessant; showing no abatement of severity, intensity, strength, or pace.
Example
The freedom fighters' relentless struggle led to victory.
自由戦士たちの容赦ない戦いは勝利へと導いた。
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。
C1 noun /rɪˈteɪnər/

retainer

前払金 / リテイナー
Meaning
a fee paid in advance to secure someone's services, or a device that holds something in place
Example
The lawyer asked for a retainer before taking the case.
弁護士は事件を受ける前に前払い金を要求した。
A2 adjective /ˈrʌʃən/

russian

Meaning
relating to Russia, its people, or its language
Example
She is studying the Russian language at university.
C1 noun /ˈrɛzɪn/

resin

樹脂
Meaning
a sticky organic substance, usually secreted by plants, often used in varnishes or plastics
Example
The craftsman used natural resin to make the sculpture shine.
職人は彫刻を輝かせるために天然の樹脂を使用しました。
C2 noun /rɪˈvaɪlər/

reviler

侮辱者
Meaning
a person who criticizes or insults others abusively
Example
He was known as a reviler of all who opposed him.
彼は自分に反対する全ての人々を侮辱する者として知られていました。
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。
B1 adjective /rɔː/

Raw

生の; 処理されていない; 自然な状態で; 未熟な
Meaning
uncooked; not processed; in natural state; inexperienced
Example
The chef prefers to use raw vegetables in his salads.
シェフはサラダに生野菜を使うのが好きです。
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。
C2 noun /ˈræŋ.kər/

rancor

憎しみ
Meaning
A feeling of deep and bitter anger or resentment.
Example
There was a rancor between the two rivals that never faded.
二人のライバルの間には、決して消えることのない憎しみがあった。
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 adjective /ˈrɪtʃ.u.əl/

Ritual

儀式
Meaning
relating to religious or ceremonial practices
Example
The wedding ceremony included many traditional ritual elements.
結婚式では多くの伝統的な儀式が行われました。
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 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.
C2 noun /rɪˈfɛkʃən/

refection

食事 / 反省
Meaning
a meal or the act of taking food and drink
Example
The monks gathered for their evening refection.
僧侶たちは夕食のために集まりました。
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。
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。
B2 adjective /rɪˈspek.tɪv/

Respective

それぞれの; 各自の
Meaning
belonging to each individual; particular to each
Example
The students returned to their respective classrooms after lunch.
学生たちは昼食後、それぞれの教室に戻った。
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。
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。
B1 noun ruːlz ənd ˌrɛɡjʊˈleɪʃənz

rules and regulations

規則と規定
Meaning
Official orders and laws that control how something is done.
Example
Rules and regulations alone cannot change attitudes.
規則と規定だけでは態度を変えることはできません。
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。
C2 noun /ˈrɒndoʊ/

rondo

音楽作品（繰り返しのテーマを持つ）
Meaning
a musical composition with a recurring leading theme
Example
The pianist ended the recital with a lively rondo.
ピアニストは生き生きとしたロンドでリサイタルを終えました。
B1 verb /rɑːb/

rob

強盗する
Meaning
to steal money or property from a person or place; to commit robbery
Example
The thief tried to rob the bank last night.
泥棒は昨晩銀行を強盗しようとしました。
A2 verb /ˌrɛkəˈmɛnd/

recommend

勧める
Meaning
to suggest or advise something as being good or suitable
Example
I recommend trying the new restaurant downtown.
私はダウンタウンの新しいレストランを試すことをリコメンドします。
C1 noun /ˌriː.pəˈkʌʃ.ən/

repercussion

影響
Meaning
An unintended consequence occurring some time after an event or action.
Example
The economic crisis had severe repercussions on global trade.
経済危機は世界貿易に深刻な影響を与えました。
C2 verb /ˈrʌmpəl/

rumple

しわにする
Meaning
to make something untidy or wrinkled by creasing or crumpling
Example
She accidentally rumpled her dress while packing.
彼女は荷物を詰める際にドレスをうっかりしわにした。
B1 adjective /ˈrʊr.əl/

Rural

田舎の
Meaning
relating to the countryside; characteristic of farming or country life
Example
She grew up in a rural area far from the city.
彼女は街から遠く離れた田舎の地域で育ちました。
C2 noun, adjective, verb /ˈrɛprəˌbeɪt/

reprobate

Meaning
A person of immoral character; to express disapproval of; morally corrupt.
Example
The old reprobate spent his days gambling and drinking.
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 adverb /ˈrɛə(r)li/

rarely

めったに
Meaning
not often, infrequently
Example
She rarely eats sweets because of her diet.
彼女はダイエットのため、お菓子をめったに食べません。
B2 noun ˌrev.əˈluː.ʃənz

revolutions

革命
Meaning
Dramatic and wide-reaching changes in political, social, or economic systems, often involving the overthrow of a government or social order.
Example
Revolutions often lead to significant societal changes.
革命はしばしば社会的な変革をもたらす。
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。
B2 verb /rɪˈkɔːl/

recall

思い出す
Meaning
to bring (a memory, fact, or situation) back into one's mind
Example
I can't recall the last time we met.
最後に会った時のことを思い出せません。
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。
A2 verb /rɪˈmeɪn/

remain

残る
Meaning
to stay in the same place; to continue to exist
Example
Only a few guests remain at the party.
パーティーには少数のゲストが残っています。
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。
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。
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 /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。
C1 adjective /ˈræspi/

raspy

ハスキー
Meaning
having a harsh, rough, or grating sound
Example
His raspy voice revealed years of smoking.
彼のハスキーな声は喫煙の年数を明らかにした。
C2 noun /ˈruː.mɪ.nənt/

ruminant

反芻動物
Meaning
a cud-chewing mammal, such as a cow or sheep
Example
Cows are ruminants that chew cud.
牛は反芻動物で、食べ物を再度咀嚼します。
B1 noun /ˈreɪn.boʊ/

Rainbow

虹
Meaning
an arch of colors formed in the sky by sunlight shining through rain
Example
After the storm, a beautiful rainbow appeared in the sky.
嵐の後、空に美しい虹が現れました。
C2 noun /rɪˈfræk.tər/

refractor

屈折望遠鏡
Meaning
A type of telescope that uses lenses to focus light.
Example
Refractor telescopes use lenses to focus light.
屈折望遠鏡は光を集中させるためにレンズを使用します。
A2 noun /roʊz/

Rose

バラ
Meaning
a fragrant flower with thorny stems, typically red, pink, white, or yellow
Example
She gave me a beautiful red rose for Valentine's Day.
彼女はバレンタインデーに私に美しい赤いバラをくれました。
B2 verb /rɪˈliːv/

relieve

Meaning
to make pain, distress, or difficulty less severe or serious
Example
The medicine helped relieve his headache.