replenish
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C1 verb rɪˈplɛn.ɪʃ

replenish

補充する
Meaning
Fill something up again.
Example
Drinking water helps replenish lost fluids in the body.
水を飲むことは、体内で失われた液体を補充するのに役立ちます。
C1 verb /rɪˈtrækt/

retract

Meaning
to withdraw a statement, promise, or part of the body; to pull back
Example
The company retracted its earlier statement after realizing the error.
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 noun /ˈroʊdənt/

rodent

齧歯類
Meaning
a small mammal such as a mouse, rat, or squirrel, characterized by constantly growing incisors
Example
The farmer set traps to catch the rodents in his barn.
農場主は納屋の中でロデントを捕まえるために罠を設置しました。
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。
B2 adjective /rɪˈlaɪ.ənt/

reliant

依存している
Meaning
depending on someone or something for support
Example
The country is too reliant on imported goods.
その国は輸入品に依存しすぎている。
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。
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。
C2 adjective /ˈrɛkənˌdaɪt/ or /ˈrɛkəndaɪt/

recondite

ほとんど知られていない、または理解しにくい
Meaning
Little known or difficult to understand.
Example
The professor’s lecture was full of recondite theories.
教授の講義は難解な理論で満ちていた。
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.
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。
C2 adjective /rɪˈdaʊ.tə.bəl/

redoubtable

恐ろしい/尊敬すべき
Meaning
formidable, especially as an opponent; inspiring fear or respect
Example
She was a redoubtable leader who commanded respect from all.
彼女は全員から尊敬を集める恐ろしいリーダーだった。
B1 adjective /rɪˈmɑːrkəbl/

Remarkable

注目すべき; 非凡な; 顕著な;
Meaning
worthy of attention; extraordinary; notable;
Example
His recovery from the illness was remarkable.
病気から回復することは注目すべきことでした。
B1 noun /rɪˈkɔːdɪŋ/

recording

録音
Meaning
the act or process of recording something
Example
The recording of the interview was clear and loud.
インタビューの録音は明瞭で大きかった。
C1 noun /rɪˈspɒnsɪvnəs/

responsiveness

反応性
Meaning
The quality of reacting quickly and positively
Example
The manager appreciated her responsiveness to customer feedback.
マネージャーは彼女の顧客からのフィードバックに対する反応性を評価しました。
B2 verb /rɪˈdʒɔɪs/

rejoice

喜ぶ
Meaning
to feel or show great joy; to celebrate
Example
The family rejoices at the good news.
その家族は良いニュースに喜んでいます。
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。
C1 verb /ˌriːˈtʌtʃ/

retouch

修正する
Meaning
To improve or repair a picture, photograph, or image by making small changes.
Example
The photographer retouched the image to remove blemishes.
写真家は画像を修正して、シミを取り除きました。
B2 noun /ˈraɪət/

Riot

暴動; 騒乱
Meaning
a violent disturbance of the peace by a crowd; an uncontrolled outburst
Example
The peaceful protest turned into a riot when violence broke out.
平和的な抗議は暴力が起こったときに暴動に変わった。
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。
B2 noun/verb rɪˈfɔːm

reform

改革
Meaning
Make changes in (something, typically a social, political, or economic institution or practice) in order to improve it.
Example
Reform in the education system was a priority.
教育システムの改革は優先事項でした。
B2 noun ˌreɪdɪˈeɪʃən

radiation

放射線
Meaning
The emission of energy as electromagnetic waves or as moving subatomic particles.
Example
Radiation from the sun can be harmful without protection.
太陽からの放射線は保護なしでは有害である可能性があります。
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。
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。
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。
C2 adjective /ˌriːkruːˈdɛsənt/

recrudescent

再発
Meaning
reviving or breaking out again after a period of abatement
Example
Recrudescent tensions threatened the fragile ceasefire.
再発した緊張が脆弱な停戦を脅かしました。
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。
B2 noun /rɪˈlaɪ.əns/

Reliance

依存
Meaning
the state of depending on something or someone for support or help
Example
His reliance on technology is concerning.
技術への依存は懸念すべきことです。
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。
C1 adjective /ˈraʊzɪŋ/

rousing

興奮させる
Meaning
Exciting, inspiring, or stirring.
Example
The speaker delivered a rousing speech that moved the audience.
スピーカーは聴衆を感動させる興奮させるスピーチをしました。
C1 noun /ˈriːbeɪt/

rebate

リベート/払い戻し
Meaning
a partial refund given to someone who has paid too much money for something
Example
The store offered a rebate on bulk purchases.
その店は大量購入に対してリベートを提供しました。
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。
C1 verb /rɪˈsɪprəˌkeɪt/

reciprocate

応答する
Meaning
To respond to an action or gesture by making a corresponding one.
Example
She smiled at him, and he reciprocated with a warm hug.
彼女は彼に微笑み、彼は温かい抱擁で応じた。
C1 adjective /rɪˈpliːt/

replete

満ちた
Meaning
Filled or well-supplied with something; abundantly full.
Example
The book is replete with fascinating historical details.
その本は魅力的な歴史的詳細で満ちています。
C2 adjective /ˈruːnɪk/

runic

ルーンに関連する
Meaning
relating to or consisting of runes; mysterious or magical
Example
The old stone had strange runic carvings on it.
古い石には奇妙なルーンの刻印がありました。
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。
C2 noun /ˈrɛd.ə.ləns/

redolence

香り
Meaning
a pleasant smell or the quality of suggesting something strongly
Example
The redolence of jasmine filled the evening air.
ジャスミンの香りが夕方の空気を満たした。
C1 adjective /ˌrɛmɪˈnɪsənt/

reminiscent

思い出させる
Meaning
Tending to remind one of something; suggestive of something in the past.
Example
The smell of rain is reminiscent of my childhood in the village.
雨の匂いは私の村での子供時代を思い出させる。
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。
B2 noun /raɪˈnɒs.ər.əs/

Rhinoceros

サイ
Meaning
a large, heavy animal with thick skin and one or two horns on its nose
Example
The rhinoceros charged through the grassland.
サイは草原を突進した。
B2 noun /rɪˈfreʃ.mənt/

Refreshment

軽食
Meaning
food and drink that is served as a light meal; something that refreshes
Example
We served light refreshments after the meeting.
会議の後、軽食を提供しました。
B2 verb /ˌriːjuˈnaɪt/

reunite

再会する
Meaning
to bring together again after separation
Example
The family was reunited after many years.
その家族は何年も後に再会しました。
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 /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。
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 /rɪˈzɔː.sɪz/

resources

資源
Meaning
A stock or supply of money, materials, staff, and other assets.
Example
The region was rich in herbal resources.
その地域は薬草の資源が豊富でした。
A2 noun rɪˈpɔːt

report

報告
Meaning
An account given of a particular matter, especially in the form of an official document after thorough investigation or consideration.
Example
The report highlights critical issues.
報告は重要な問題を浮き彫りにします。
C2 adjective /ˈrɛɡnənt/

regnant

統治している
Meaning
Reigning; currently holding power, authority, or dominance.
Example
The regnant queen introduced several reforms during her reign.
統治している女王は、彼女の統治期間中にいくつかの改革を導入しました。
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。
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。
B1 adjective /ˈrel.ə.vənt/

Relevant

関連する
Meaning
closely connected or appropriate to what is being discussed; pertinent
Example
Please provide only relevant information for this discussion.
この議論に関連する情報のみを提供してください。
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 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 verb /rɪˈvoʊlt/

revolt

反乱する
Meaning
to rebel against authority; to feel disgust
Example
The people revolted against the corrupt government.
人々は腐敗した政府に反乱を起こしました。
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。
B1 noun /ˌrɛp.jʊˈteɪ.ʃən/

reputation

評判, 名声
Meaning
The opinion generally held about someone or something; fame or prestige.
Example
A good reputation is essential for business success.
良い評判はビジネスの成功に不可欠です。
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 adjective /ˈrɪkɪti/

rickety

ぐらつく
Meaning
Poorly made and likely to collapse; shaky.
Example
They crossed a rickety wooden bridge over the river.
彼らは川を越える不安定な木製の橋を渡りました。
C1 verb /rɪˈdʒɛnəreɪt/

regenerate

再生する
Meaning
to grow or produce again; to renew or restore
Example
The lizard can regenerate its lost tail.
トカゲは失われた尾を再生できます。
B1 noun raɪts

rights

権利
Meaning
A moral or legal entitlement to have or obtain something or to act in a certain way.
Example
The rights of people were prioritized.
人々の権利は優先されました。
B2 noun ˌreɪ.di.oʊ.ækˈtɪv.ə.ti

radioactivity

放射性
Meaning
The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
Example
Radioactivity is used in medical treatments like cancer therapy.
放射性は、がん治療のような医療に用いられている。
B2 noun /rɪˈfjuː.zəl/

Refusal

拒否; 拒絶
Meaning
the act of saying no to something or not accepting something
Example
His refusal to cooperate made the project more difficult.
彼の協力拒否はプロジェクトをさらに難しくした。
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 /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 /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。
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。
B2 verb /rɪˈfreʃ/

refresh

リフレッシュする
Meaning
to make fresh again; to restore energy
Example
A cold drink refreshes me on hot days.
暑い日には冷たい飲み物が私をリフレッシュさせます。
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。
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。
B1 noun /rɪˈɡret/

Regret

後悔
Meaning
a feeling of sadness or disappointment about something that has happened or been done
Example
She felt deep regret about her harsh words.
彼女は自分の辛辣な言葉に深い後悔を感じていました。
C1 noun /ˈrɑːstər/

roster

リスト
Meaning
A list or plan showing people’s duties or times when they are scheduled.
Example
The manager updated the staff roster for next week.
マネージャーは来週のスタッフリストを更新しました。
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。
C1 verb /rɪˈnaʊns/

renounce

放棄する
Meaning
to formally declare rejection of something, such as a claim, belief, or way of life
Example
She renounced her citizenship to move abroad permanently.
彼女は永住権を得るために市民権を放棄しました。
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。
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。
B2 adverb /ˈred.ɪ.li/

Readily

快く; 簡単に; ためらわずに
Meaning
willingly; easily; without hesitation
Example
She readily agreed to help with the project.
彼女は喜んでプロジェクトを手伝うことに同意した。
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。
B2 noun, verb, adjective /ræŋk/

rank

ランク
Meaning
A position in a hierarchy; to place in order according to importance or quality.
Example
She quickly rose to a senior rank in the company.
彼女は会社で素早く上級ランクに昇進しました。
A2 adjective /riːl/

Real

本物の; 真正の; 偽物ではない
Meaning
actually existing; genuine; not imaginary or fake
Example
This is a real diamond, not a fake one.
これは本物のダイヤモンドです。偽物ではありません。
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 /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 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。
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。
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。
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 adverb /rɪˈlʌk.tənt.li/

Reluctantly

いやいや
Meaning
in an unwilling manner; with hesitation or resistance
Example
She reluctantly agreed to help with the project.
彼女はプロジェクトを手伝うことに渋々同意した。
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 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。
C2 noun /rɪˈfrɪndʒənsi/

refringency

屈折率
Meaning
The ability of a substance to bend light; refractive power.
Example
Glass has a higher refringency than water.
ガラスは水よりも高いリフリンジェンシーを持っています。
B2 noun /ˈrʊki/

rookie

初心者
Meaning
a person who is new to an activity or organization; a beginner
Example
The rookie policeman made a few mistakes on his first day.
新米警官は初日にいくつかのミスを犯しました。
B1 noun /ˌrek.ə.menˈdeɪ.ʃən/

Recommendation

推薦
Meaning
a suggestion that someone or something would be good or suitable for a particular job or purpose
Example
I got this job based on a recommendation from my professor.
私は教授からの推薦でこの仕事を得ました。
C1 adjective, noun /rɪˈsiːvəbl/

receivable

回収可能
Meaning
Money that is owed to a company and is expected to be paid.
Example
The company's receivables increased significantly this quarter.
会社の売掛金は今四半期に大幅に増加しました。
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。
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。
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 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 adjective /rɪˈlɪdʒəs/

Religious

宗教的; 信心深い; 精神的; 宗教に関連する;
Meaning
relating to or believing in a religion; devout; spiritual;
Example
He comes from a very religious family.
彼は非常に宗教的な家庭から来ています。
C1 verb /rɪˈtɔːrt/

retort

反論
Meaning
To reply quickly or sharply, often in a witty or angry manner.
Example
He quickly retorted that he was not to blame.
彼は素早く反論した、彼が悪くないと言った。
B1 adjective ˈriː.dʒən.əl

regional

地域の
Meaning
Relating to or characteristic of a region.
Example
Regional hubs support localized industries.
地域のハブは地元産業をサポートします。
C1 noun /ˌrɛkwɪˈzɪʃən/

requisition

要求
Meaning
An official order laying claim to the use of property or materials; a formal demand or request.
Example
The manager submitted a requisition for new office supplies.
マネージャーは新しいオフィス用品のためのレクイジションを提出しました。
B2 adverb /ˈraɪtli/

Rightly

正しく; 適切に; 公正に
Meaning
correctly; properly; justly
Example
She rightly pointed out the mistakes in the report.
彼女は報告書の誤りを正しく指摘した。
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。
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。
C2 adjective /ˈræŋ.kər.əs/

rancorous

恨みを持った
Meaning
Characterized by bitterness or resentment.
Example
Their rancorous debate lasted for hours.
彼らの恨みを持った議論は何時間も続いた。
B1 verb /rɪˈɡɑːrd/

regard

考える
Meaning
to consider or think of in a particular way; to look at
Example
She regards him as her best friend.
彼女は彼を親友として考えている。
B1 noun /rɪsk/

Risk

リスク
Meaning
a situation involving exposure to danger; the possibility of something bad happening
Example
Taking this investment carries a high risk of losing money.
この投資には高いリスクが伴い、資金を失う可能性があります。
B2 verb /reɪd/

raid

踏み込む
Meaning
to attack suddenly; to search and seize
Example
Police raid the illegal gambling house.
警察は違法なギャンブルの家に踏み込む。
C1 verb /riːˈfɜːrbɪʃ/

refurbish

改装する
Meaning
To renovate or redecorate something, especially a building.
Example
The company decided to refurbish its old office.
その会社は古いオフィスを改装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.
C2 noun /ˈrɛv.ər.i/

reverie

白昼の夢; 夢想
Meaning
A state of being pleasantly lost in one's thoughts; a daydream.
Example
Lost in reverie, he didn't hear his name being called.
夢想にふけっているため、彼は名前が呼ばれるのを聞かなかった。
C2 noun /rɪˈkwaɪtəl/

requital

報復
Meaning
The act of returning something, such as a favor, service, or punishment; repayment or retaliation.
Example
She offered her time in requital for his kindness.
彼女は彼の親切に報復として自分の時間を提供しました。
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。
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。
C2 verb /rɪˈɡeɪl/

regale

楽しませる
Meaning
To entertain or amuse someone with stories, food, or drink.
Example
He regaled us with stories of his travels around the world.
彼は世界中を旅した話で私たちを楽しませました。
C1 noun /ˌrɛmɪˈnɪsəns/

reminiscence

回想
Meaning
a story or memory about past events
Example
He shared a reminiscence of his childhood days in the village.
彼は村での子供時代の思い出を語った。
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。
B2 noun /rʌʃ/

Rush

急ぎ; ラッシュ
Meaning
a sudden quick movement toward something; a period of great activity or demand; hurry
Example
There was a rush to buy tickets for the concert.
コンサートのチケットを買うために急いでいました。
B2 adjective ˌrev.əˈluː.ʃən.ər.i

revolutionary

革命的な
Meaning
Involving or causing a complete or dramatic change.
Example
Revolutionary ideas are reshaping the industry.
革命的なアイデアが業界を再編成しています。
C2 adjective /ˈruːbɪkənd/

rubicund

健康的な赤みを帯びた顔
Meaning
Having a healthy reddish complexion.
Example
The old man’s rubicund face showed he was in good health.
その老人の赤みを帯びた顔は、彼が健康であることを示していた。
B2 noun /ˈraɪvəlri/

Rivalry

ライバル関係; 競争
Meaning
competition for the same objective or for superiority in the same field; the state of being rivals
Example
The rivalry between the two teams made the match exciting.
二つのチーム間のライバル関係が試合を興奮させた。
C2 noun /rɪˈɡætə/

regatta

ボート競走
Meaning
A sporting event consisting of a series of boat or yacht races.
Example
The annual regatta attracted competitors from around the world.
毎年のレガッタは世界中から競技者を引き付けた。