C1 noun /ˌres.ɪˈteɪ.ʃən/

Recitation

朗読

Meaning

the action of reciting or repeating aloud from memory

Example

The poetry recitation contest was held in the auditorium.

詩の朗読大会はホールで行われました。

C1 verb /rɪˈpjuː.di.eɪt/

repudiate

否定する

Meaning

to refuse to accept, recognize, or support something

Example

He repudiated the claim that he was involved in the scandal.

彼はそのスキャンダルに関与していたという主張を否定しました。

B2 noun /ˈreɪ.dɑːr/

Radar

レーダー

Meaning

a system for detecting the presence, direction, distance of aircraft, ships by sending out radio waves

Example

The radar detected an unknown aircraft approaching the base.

レーダーは基地に接近する未知の航空機を検出しました。

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。

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 noun /ˈrerəti/

Rarity

珍しい状態; 普通でないもの、または希少なもの

Meaning

the state of being rare; something that is uncommon or scarce

Example

The antique vase was a rarity worth thousands of dollars.

その古代の花瓶は、数千ドルの価値がある珍しいものだった。

C1 adjective /rɪˈmoʊtɪd/

remoted

リモートされた

Meaning

placed at a distance; made remote

Example

The system was remoted to a secure location.

システムは安全な場所にリモートされました。

B1 noun /ˈrɛzɪdəns/

residence

レジデンス

Meaning

a place where someone lives; a home or dwelling

Example

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

彼は最近、市内中心部近くの新しいレジデンスに引っ越しました。

B1 noun /ruːˈtiːn/

routine

ルーチン, 習慣, 固定された順序

Meaning

A sequence of actions regularly followed; a fixed program.

Example

A well-structured routine improves productivity.

よく構造化されたルーチンは生産性を向上させます。

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。

C1 verb /rɪˈsʌsɪteɪt/

resuscitate

Meaning

to revive someone from unconsciousness or apparent death

Example

The doctors tried to resuscitate the patient after the heart attack.

C1 adjective /rɪˈzɪdjuəl/

residual

残余

Meaning

Remaining after the greater part has gone.

Example

The patient experienced residual pain after the surgery.

患者は手術後に残余の痛みを感じました。

C1 adjective /rɪˈkʌr.ənt/

Recurrent

再発性の

Meaning

happening repeatedly; occurring again and again; periodic;

Example

She has been suffering from recurrent headaches for months.

彼女は数ヶ月間、繰り返す頭痛に悩まされています。

B1 noun /ˈrɪðəm/

rhythm

リズム

Meaning

a strong, regular, repeated pattern of movement or sound

Example

The rhythm of the music made everyone want to dance.

音楽のリズムはみんなを踊りたくさせた。

C2 adjective /rɪˈmjuːnərətɪv/

remunerative

利益がある

Meaning

Financially rewarding or profitable.

Example

He chose a remunerative career in medicine.

彼は医学の中で利益のあるキャリアを選びました。

B2 noun /reɪdʒ/

rage

怒り

Meaning

intense anger or fury

Example

She shouted in a fit of rage after hearing the news.

彼女はそのニュースを聞いて怒りの叫び声を上げました。

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.

B1 adjective rɪˈlaɪ.ə.bəl

reliable

信頼できる

Meaning

Consistently good in quality or performance; able to be trusted.

Example

Reliable systems ensure efficiency.

信頼できるシステムは効率を確保します。

A2 noun reɪndʒ

range

範囲

Meaning

The extent or scope of something; the distance that can be covered or the limits within which something operates.

Example

The new electric car has a range of 400 miles.

新しい電気自動車の範囲は400マイルです。

C1 noun /rɪft/

rift

亀裂

Meaning

a serious break in a relationship; a split or crack

Example

A rift developed between the two friends after the argument.

議論の後、二人の友達の間に亀裂が生じた。

B2 adjective /ˈreɪʃəl/

racial

人種の

Meaning

relating to a race of people

Example

Racial equality is an important issue in many societies.

人種平等は多くの社会において重要な問題です。

B2 adjective /rɪˈɡret.ə.bəl/

Regrettable

残念な; 失望させる; 悲しい

Meaning

causing or deserving regret; unfortunate; deplorable

Example

It is regrettable that so many talented people left the company.

こんなに多くの才能ある人々が会社を辞めたのは残念です。

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。

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。

B2 verb /rɪˈkɜːr/

recur

Meaning

to happen again, especially repeatedly or at regular intervals

Example

The headache tends to recur every few weeks.

C1 noun /rɪˈmɪt.əns/

Remittance

送金

Meaning

A sum of money sent in payment or as a gift.

Example

The country's economy benefits from expatriate remittance.

その国の経済は、移住者からの送金によって利益を得ている。

C1 verb /rɪˈsiːd/

recede

後退する

Meaning

To move back or further away from a previous position.

Example

The floodwaters began to recede after the heavy rain stopped.

激しい雨が止んだ後、洪水は後退し始めました。

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。

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 noun /ˈrɛvərəns/

reverence

尊敬

Meaning

deep respect for someone or something

Example

The students showed reverence to their teacher.

学生たちは先生に尊敬を示した。

B1 noun rɪˈdʌk.ʃən

reduction

削減

Meaning

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

Example

Greenhouse gas reduction is a primary global goal.

温室効果ガスの削減は主要な地球規模の目標です。

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。

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 adjective /rɪˈspek.tə.bəl/

Respectable

尊敬すべき

Meaning

worthy of respect; having good reputation; decent

Example

He comes from a respectable family in the community.

彼は地域社会の尊敬すべき家族から来ました。

B2 noun /ˌreɡ.jʊˈlær.ɪ.ti/

Regularity

規則正しさ

Meaning

the quality of being regular; occurring at fixed intervals or in a consistent pattern

Example

The regularity of his exercise routine helped him stay healthy.

彼の運動習慣の規則正しさが健康を維持するのに役立ちました。

B1 verb /rɪˈtɜrnɪŋ/

returning

戻る

Meaning

Coming or going back to a place or person.

Example

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

グループは12月25日に港に戻ります。

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。

B1 noun /raɪs ˈkʊkər/

Rice cooker

電気炊飯器

Meaning

an electric appliance designed to cook rice automatically

Example

The rice cooker automatically switches off when the rice is perfectly cooked.

ライスクッカーはご飯が完璧に炊けると自動でオフになります。

C1 verb /rɪˈkɔɪl/

recoil

後退する

Meaning

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

Example

She recoiled at the sight of the snake.

彼女はヘビを見て後退した。

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。

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。

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。

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。

B2 noun /rʌst/

Rust

錆

Meaning

reddish-brown coating formed on iron or steel by oxidation; corrosion

Example

The old car was covered in rust after years of neglect.

古い車は何年も放置されていた後、サビで覆われていました。

C1 verb /ˌriː.kənˈviːn/

reconvene

再開する

Meaning

to gather or assemble again, especially for a meeting

Example

The committee will reconvene after lunch.

委員会は昼食後に再開します。

A2 noun, verb /raʊ/ (argument), /roʊ/ (line of things)

row

列 / 争い

Meaning

A line of things or people; also, a noisy quarrel; to propel a boat with oars.

Example

They had a loud row about money.

彼らはお金について大声で争いました。

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。

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。

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。

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。

C2 noun /ˈreɪmənt/

raiment

衣服

Meaning

clothing, especially fine or formal wear

Example

The king wore royal raiment during the ceremony.

王は儀式の間、王族の衣服を着ていた。

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。

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.

B1 noun /ˈreɪn.dɪər/

Reindeer

トナカイ

Meaning

a large deer with branched horns that lives in cold northern areas

Example

Santa's reindeer pulled his sleigh across the sky.

サンタのトナカイは空を越えてソリを引きました。

B2 verb /rɪˈfaɪn/

refine

洗練する

Meaning

to improve by making small changes; to purify

Example

The chef refines the recipe to perfection.

シェフはレシピを完璧に洗練します。

C1 noun /rɪˈkɜr.əns/

Recurrence

再発

Meaning

the fact of something happening again; an instance of something happening again

Example

The doctor was concerned about the recurrence of the patient's symptoms.

医師は患者の症状の再発について懸念していました。

B2 noun rɪˈpʌb.lɪk

republic

共和国

Meaning

A state in which supreme power is held by the people and their elected representatives, with an elected or nominated president rather than a monarch.

Example

A republic is governed by representatives of the people.

共和国は人民の代表者によって治められています。

A2 noun /ˈriːdɪŋ/

reading

読書

Meaning

the action or skill of reading

Example

Reading is one of my favorite hobbies.

読書は私の好きな趣味の一つです。

B2 adjective ˌriːprəˈdʌktɪv

reproductive

繁殖に関する

Meaning

Relating to the reproduction of offspring.

Example

The reproductive cycle of pests can cause rapid infestations.

害虫の生殖サイクルは迅速な感染を引き起こす可能性があります。

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。

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。

C1 verb /ˌriːɪnˈtɪɡreɪt/

reintegrate

再統合する

Meaning

To bring someone or something back into a group or society after being separated.

Example

The program helps prisoners reintegrate into society.

そのプログラムは囚人が社会に再統合するのを助けます。

B2 noun /rɪˈmeɪn.dər/

Remainder

残り; 余り

Meaning

the part that is left over; what remains after the other parts have been taken away

Example

The remainder of the food was stored in the refrigerator.

残りの食べ物は冷蔵庫に保存されました。

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。

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。

C2 adjective /rɪˈprɛsəbl̩/

repressible

抑制可能

Meaning

Capable of being restrained or suppressed.

Example

The movement proved to be hardly repressible.

その運動はほとんど抑制可能であることが証明されました。

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 noun, verb /raʊt/

rout

敗北

Meaning

A decisive defeat; to defeat completely.

Example

The army routed the enemy forces in the battle.

軍隊は戦いで敵軍を完全に打ち負かしました。

B2 noun /ˈrɛlɪvəns/

relevance

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。

C2 adjective /rɪˈsplɛndənt/

resplendent

輝かしい

Meaning

Shining brilliantly; dazzling in appearance or effect

Example

The bride looked resplendent in her wedding gown.

花嫁はウェディングドレスで輝いて見えました。

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。

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 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。

B2 noun /roʊˈteɪʃən/

Rotation

回転; 回転運動; 自転

Meaning

the action of rotating around an axis or center; a single turn

Example

The Earth's rotation takes 24 hours to complete.

地球の回転は24時間かかります。

C2 noun /ˈrɛkwiəm/

requiem

レクイエム

Meaning

A mass, music, or ceremony for the repose of the souls of the dead.

Example

The choir performed a requiem in memory of the late leader.

合唱団は故リーダーを記念してレクイエムを演奏しました。

C1 noun rɪˌdʒɛnəˈreɪʃən

regeneration

再生

Meaning

Renewal, growth and development of cells, tissues or energy

Example

Proper rest allows muscle regeneration after exercise.

適切な休息は、運動後の筋肉の再生を促進します。

B2 adjective /ˈrændəm/

Random

ランダム

Meaning

without pattern or predetermined order; happening by chance

Example

She selected a random book from the library shelf.

彼女は図書館の棚からランダムに本を選びました。

B2 adjective /ˈrʌn daʊn/

run-down

荒れ果てた

Meaning

in a poor condition; worn out or neglected

Example

They live in a run-down house at the edge of town.

彼らは町の端にある荒れ果てた家に住んでいます。

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。

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 noun /rɪˈsɛs/

recess

休憩

Meaning

A short break from work or school; also a small space set back in a wall.

Example

The children played outside during recess.

子供たちは休憩中に外で遊びました。

C1 verb /rɪˈdʒuː.vɪ.neɪt/

rejuvenate

再生する

Meaning

To make or feel young, healthy, or energetic again.

Example

A vacation can rejuvenate the mind and body.

休暇は心と体を再生させることができます。

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 noun /ˈræp.tʃər/

rapture

狂喜, 恍惚

Meaning

A feeling of intense joy, delight, or ecstasy.

Example

She listened to the music in rapture.

彼女は音楽に没頭して、狂喜していました。

B1 noun /rɪˈkwɛst/

request

Meaning

a formal or polite demand for something

Example

She made a request for additional time to complete the project.

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 noun /rɑk sɔlt/

Rock Salt

岩塩

Meaning

natural salt crystals formed from evaporated ancient seas; unrefined salt

Example

Rock salt is considered healthier than table salt.

岩塩はテーブルソルトよりも健康的だと考えられています。

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。

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。

C1 adjective /ˌrɛtroʊˈæktɪv/

retroactive

遡及的

Meaning

applying to a period before it was enacted or established

Example

The new law was made retroactive to cover past cases.

新しい法律は過去のケースをカバーするために遡及的に作られました。

C1 adjective /ˈroʊ.ɡɪʃ/

Roguish

いたずらな; 狡猾な

Meaning

mischievous; playfully dishonest

Example

His roguish smile suggested he was up to some mischief.

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

C1 noun /ræmˈbuːtən/

Rambutan

ランブータン

Meaning

a tropical fruit with red spiky skin and white translucent sweet flesh similar to litchi

Example

The rambutan looks scary with its hairy skin but tastes very sweet inside.

ランブータンは毛皮のような皮で怖そうに見えますが、中はとても甘いです。

B2 noun /ˈreɪtɪŋ/

rating

評価

Meaning

an evaluation or assessment, usually numerical

Example

The movie received a high rating from critics.

その映画は批評家から高い評価を受けました。

B2 verb /ˈræm.bəl/

ramble

Meaning

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

Example

He rambled on about his childhood for hours.

B2 verb /rɪˈvɜːrt/

revert

戻る

Meaning

to return to a previous state, condition, or practice

Example

The system will revert to its original settings after the update.

システムは更新後、元の設定に戻ります。

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 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。

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。

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。

A1 adjective /ˈreɪ.di.əʊ/

radio

ラジオ

Meaning

Relating to radio waves or broadcasting.

Example

FAST is the largest radio telescope in the world.

FASTは世界最大のラジオ望遠鏡です。

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。

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 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 /rɪˈpruːf/

reproof

叱責, 非難

Meaning

An expression of blame or disapproval.

Example

His careless words drew a sharp reproof from his mother.

彼の不注意な言葉は、母親からの厳しい叱責を引き起こした。

C1 noun /ˈrɛdʒɪmənt/

regiment

Meaning

A permanent unit of an army, typically commanded by a colonel and divided into several companies.

Example

The regiment marched proudly through the streets after returning from the mission.

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。

C1 noun /rɪˈmɔːrs/

Remorse

後悔

Meaning

deep regret or guilt for a wrong committed; bitter regret for something done

Example

He felt deep remorse for his actions.

彼は自分の行動に対して深い後悔を感じていた。

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。

C2 adjective /rɪˈfræktəri/

refractory

反抗的

Meaning

Stubborn or resistant to control, authority, or treatment.

Example

The refractory child refused to follow the teacher's instructions.

反抗的な子供は教師の指示に従うのを拒否した。

B2 noun /ˈraɪvəl/

Rival

ライバル; 競争相手;

Meaning

a person or thing competing with another for the same objective or for superiority in the same field

Example

The two companies have been business rivals for decades.

二つの企業は何十年もの間、商業上のライバルです。

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。

B2 noun /ˌref.jʊˈdʒiː/

Refugee

難民

Meaning

a person who has been forced to leave their country in order to escape war, persecution, or natural disaster

Example

The refugee camp provided temporary shelter for thousands of displaced families.

難民キャンプは、何千人もの避難した家族に一時的な避難所を提供しました。

C1 verb /ˈrevəl/

revel

楽しむ

Meaning

to enjoy oneself in a lively and noisy way; to take great pleasure in

Example

They revel in their success.

彼らは成功を楽しんでいます。

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。

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。

C1 adjective /rɪˈpjuː.t̬ɪd/

Reputed

評判の良い; 有名な

Meaning

generally said or believed to be; having a particular reputation

Example

He is reputed to be one of the best doctors in the country.

彼はその国で最高の医者の一人と見なされています。

C2 verb /ˈrɔɪstər/

roister

大声で祝い

Meaning

to revel noisily; to engage in loud, boisterous celebration

Example

The fans roistered in the streets after the victory.

ファンは勝利後に街で騒いでいました。

C1 adjective rɪˈsɛʃ.ən.er.i

recessionary

不況に関する

Meaning

Relating to or characterized by economic recession.

Example

Governments introduce policies to counter recessionary effects.

政府は景気後退の影響に対処するために政策を導入しています。

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 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。