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。

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。

C2 adjective /rɪˈfɛrəbəl/

referable

参照可能な

Meaning

able to be related or directed to something

Example

The issue is referable to the new policy changes.

その問題は新しい政策変更に関連付けることができます。

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。

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 /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 adjective /ræmˈbʌŋk.ʃəs/

rambunctious

騒々しい

Meaning

boisterous, energetic, and difficult to control.

Example

The rambunctious children filled the house with noise.

騒々しい子供たちが家を騒音で満たしました。

C1 noun /ˈrʌmpəs/

Rumpus

騒動; 混乱; 騒音

Meaning

a noisy disturbance; an uproar or commotion

Example

The children caused quite a rumpus in the playground.

子供たちは遊び場でかなりの騒動を引き起こしました。

B2 adjective /rɪˈzɜːrvd/

Reserved

控えめな; 内向的な

Meaning

slow to reveal emotion or opinions; restrained in manner

Example

She is quite reserved and doesn't talk much in meetings.

彼女はかなり控えめで、会議ではあまり話しません。

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。

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。

C1 verb /rɪˈtælieɪt/

retaliate

報復する

Meaning

to make an attack in return for a similar attack

Example

The army retaliated after the enemy attack.

軍隊は敵の攻撃の後、報復した。

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。

A2 verb /rɪˈdjuːs/

reduce

減らす

Meaning

to make smaller in size, amount, or degree; to decrease

Example

We need to reduce our expenses this month.

今月は支出を減らす必要があります。

C1 verb /rɪˈzaʊnd/

resound

反響する

Meaning

To fill a place with sound; to be celebrated or talked about widely.

Example

The hall resounded with applause.

ホールは拍手で反響しました。

C2 adjective /ˈræfɪʃ/

raffish

型破りで少し評判が悪いが魅力的

Meaning

unconventional and slightly disreputable but attractive

Example

He had a raffish charm that made him popular in the city.

彼は街で人気がある理由は、レイフィッシュな魅力があったからだ。

C1 verb /rɪˈvoʊk/

revoke

取り消す

Meaning

To officially cancel or withdraw a decision, privilege, or right.

Example

The government decided to revoke his passport.

政府は彼のパスポートを取り消すことを決定した。

A1 verb /riːd/

read

読む

Meaning

to look at written words and understand their meaning

Example

I read books before going to bed.

私は寝る前に本を読みます。

C1 adjective /ˈræmpənt/

rampant

蔓延する

Meaning

existing or spreading unchecked, often in an undesirable way

Example

Corruption was rampant in the city administration.

腐敗は市の行政で蔓延していた。

B1 noun riˈæləti

reality

現実

Meaning

The world or the state of things as they actually exist, as opposed to an idealistic or notional idea.

Example

The reality of the situation was evident.

状況の現実は明らかでした。

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。

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。

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。

A2 verb /rɪˈmaɪnd/

remind

思い出させる

Meaning

to cause someone to remember something

Example

Please remind me to call her tomorrow.

明日彼女に電話するのをリマインドして下さい。

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。

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。

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。

B1 verb /rɪˈfɜː/

refer

参照する

Meaning

to mention or allude to something; to direct someone to a source of information

Example

Please refer to page 45 for more details.

詳細については、ページ45をご参照ください。

C1 verb /rɪˈdiːm/

redeem

償う

Meaning

to compensate for faults or mistakes; to exchange something for value

Example

He managed to redeem his reputation after the scandal.

彼はスキャンダル後に自分の評判を回復しました。

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。

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 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。

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。

B2 noun /rɪˈvaɪ.vəl/

Revival

復活

Meaning

an improvement in the condition or strength of something; renewed interest in or attention to something

Example

There has been a revival of interest in traditional crafts.

伝統的な工芸への関心が復活しました。

B2 verb /ˌriːprəˈdjuːs/

reproduce

再生する, 繁殖する

Meaning

To make a copy of something; to generate offspring.

Example

Many animals reproduce rapidly in favorable conditions.

多くの動物は好ましい条件下で急速に繁殖します。

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 /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。

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。

B1 adjective /roʊˈmæn.tɪk/

Romantic

ロマンチック

Meaning

relating to love; idealistic; dreamy

Example

They enjoyed a romantic dinner by candlelight.

彼らはろうそくの光でロマンチックなディナーを楽しんでいました。

A2 noun /ruːf/

roof

屋根

Meaning

the top covering of a building or vehicle

Example

The roof of the house needs to be repaired.

家の屋根は修理が必要です。

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。

C2 noun /rɪˈfɛktəri/

refectory

食堂

Meaning

a dining hall, especially in a monastery, convent, or school

Example

Students had lunch in the refectory.

学生たちは食堂で昼食をとった。

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。

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。

A1 verb /rʌn/

run

走る

Meaning

to move quickly on foot; to operate or function

Example

I run every morning for exercise.

私は毎朝運動のために走ります。

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。

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。

C2 noun /rɪˈpæst/

repast

食事

Meaning

A meal or the food eaten during a meal.

Example

They enjoyed a delicious repast by the riverside.

彼らは川辺で美味しい食事を楽しんだ。

C2 adjective /ˈreɪ.moʊs/

ramose

分岐した

Meaning

having many branches.

Example

The ramose tree shaded the entire garden.

その分岐した木は庭全体に日陰を提供しました。

C1 noun /ˈrɛ.trəʊ.fɪt.ɪŋ/

retrofitting

古いシステムに新しい技術や機能を追加すること

Meaning

The addition of new technology or features to older systems.

Example

The building underwent retrofitting to meet new safety standards.

その建物は、新しい安全基準に適応するためにレトロフィッティングされました。

A2 verb /rɪˈkwaɪər/

require

必要とする

Meaning

to need something; to demand or insist on

Example

This job requires excellent communication skills.

この仕事には優れたコミュニケーションスキルが必要です。

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。

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。

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。

B2 noun/verb /rɪˈmɑːrk/

remark

発言

Meaning

something that is said; a comment

Example

She made a remark about the weather.

彼女は天気について発言した。

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。

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 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。

B2 verb /ˈrendər/

render

提供する

Meaning

to provide or give; to make or cause to become

Example

The artist renders the scene beautifully.

アーティストはシーンを美しく表現します。

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。

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 /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。

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。

B2 noun ˌriːfɔːˈreɪʃən

reforestation

再植林

Meaning

The natural or intentional restocking of existing forests and woodlands that have been depleted.

Example

Reforestation efforts are crucial to restoring ecosystems.

再植林の努力は、生態系の回復に重要です。

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 /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 verb /rɪˈɡeɪn/

regain

回復する

Meaning

to get back something that was lost; to recover

Example

He regains his strength after the illness.

彼は病気の後、力を回復する。

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。

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。

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。

A2 noun /rɪˈfrɪdʒ.ər.eɪ.tər/

Refrigerator

冷蔵庫

Meaning

an appliance for keeping food and drinks cold

Example

Please put the milk in the refrigerator to keep it fresh.

牛乳を新鮮に保つために冷蔵庫に入れてください。

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 verb /rɪˈdrɛs/

redress

是正する

Meaning

to set right, remedy, or compensate for a wrong or grievance

Example

The company promised to redress the complaints of its customers.

その会社は顧客の苦情を是正すると約束しました。

C2 noun /rɪˈsɪdɪvɪst/

recidivist

再犯者

Meaning

A person who repeatedly commits crimes, especially after having been punished.

Example

The police identified him as a recidivist who had been arrested several times before.

警察は彼を再犯者として特定し、以前に何度も逮捕されていた。

B1 noun /roʊˈmæns/

Romance

ロマンス

Meaning

a feeling of excitement and mystery associated with love; a love affair or relationship

Example

Their romance began when they met at the university library.

彼らの恋愛は、大学の図書館で出会ったときに始まった。

B1 verb /rʌb/

rub

こする

Meaning

to press and move something firmly against a surface; to apply pressure with movement

Example

She rubbed her hands together to keep them warm.

彼女は手をこすり合わせて暖かく保った。

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。

B2 noun ˌrɛvəˈluːʃən

revolution

革命

Meaning

A forcible overthrow of a government or social order, in favor of a new system.

Example

The story is set during the French Revolution.

物語はフランス革命の時代に設定されています。

B2 verb /reɪp/

rape

強姦

Meaning

to force someone to have sexual intercourse without their consent

Example

The law strictly punishes those who commit rape.

法律は強姦を犯した者に厳罰を与えます。

C2 noun /ræŋˈɡuːn ˈkriːpər/

Rangoon creeper

ランゴーンクリーパー

Meaning

A climbing vine with fragrant flowers that change color from white to pink to red

Example

The Rangoon creeper covered the entire fence with its sweet-smelling flowers.

ランゴーンクリーパーはその甘い香りの花でフェンス全体を覆いました。

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 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 adjective /rɪˈfʌldʒənt/

refulgent

輝く

Meaning

Shining brightly; radiant.

Example

The refulgent sun lit up the entire valley.

輝く太陽が谷全体を照らした。

B2 adverb /rɪˈpɔːtɪdli/

reportedly

報告によると

Meaning

according to what is said or believed, although not confirmed

Example

The company has reportedly agreed to the new terms.

その会社はreportedly新しい条件に同意しました。

B2 noun /ˈrækɪt/

racket

ラケット / 騒音

Meaning

A piece of equipment used to hit the ball in sports like tennis or badminton; also a loud noise or an illegal scheme.

Example

He bought a new tennis racket for the match.

彼は試合のために新しいテニスラケットを買った。

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。

A2 adverb /ˈrɛɡjələrli/

regularly

定期的に

Meaning

at regular intervals; in a regular manner

Example

She exercises regularly to stay healthy.

彼女は健康を保つために定期的に運動します。

B2 noun /ˈrɪb.ən/

ribbon

リボン

Meaning

a long, narrow strip of fabric used for tying or decoration

Example

She tied her hair with a red ribbon.

彼女は赤いリボンで髪を結びました。

B2 noun ˌriːkənˈstrʌkʃn

reconstruction

再建

Meaning

The action or process of reconstructing or being reconstructed.

Example

The reconstruction project took years.

再建プロジェクトは数年かかりました。

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。

Meaning

A formal expression of disapproval; to scold or criticize someone officially.

Example

The teacher reprimanded the student for being late.

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 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。

A2 verb /rɪˈtɜːrn/

return

帰る

Meaning

to come or go back to a place; to give back

Example

I will return home tomorrow.

私は明日家に帰ります。

B1 verb /rɪˈlaɪ/

rely

頼る

Meaning

to depend on or trust someone or something

Example

I rely on my friends for support.

私は支援のために友達に頼ります。

B2 noun /rɪb/

Rib

あばら骨

Meaning

one of the curved bones that protect the chest and lungs

Example

He broke his rib in the accident.

彼は事故であばら骨を折った。

C1 noun /ˌrek.ənˌsɪl.iˈeɪ.ʃən/

reconciliation

和解

Meaning

The restoration of friendly relations; the action of making one view or belief compatible with another.

Example

The peace treaty was a major step toward reconciliation.

平和条約は和解への重要な一歩でした。

B2 adjective /rɪˈliːvd/

relieved

安心した

Meaning

feeling happy and less worried after something stressful has been removed or resolved

Example

She felt relieved after hearing the good news.

良い知らせを聞いた後、彼女は安心した。

B1 noun /rɪˈkʌvəri/

recovery

回復

Meaning

the process of recovering or returning to a normal state

Example

The patient is in recovery after the surgery.

患者は手術後、回復中です。

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。