reduction
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B1 noun rɪˈdʌk.ʃən

reduction

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.
C2 noun /ˈræbəl/

Rabble

Meaning
a disorderly crowd; the common people regarded as socially inferior
Example
The politician dismissed the protesters as mere rabble.
C2 adjective /ˈrævənɪŋ/

ravening

Meaning
Extremely hungry and greedy; voracious.
Example
The ravening wolves circled the camp.
C1 verb /ˈræʃənəlaɪz/

rationalize

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.
B2 noun, verb /ˈrætəl/

rattle

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.
C2 adjective /rɪˈmiːdiəbl/

remediable

Meaning
capable of being corrected or cured
Example
The mistake was serious but still remediable.
A1 noun, adjective, adverb /raɪt/

right

Meaning
something that is morally good, fair, or just; or a legal/entitled claim
Example
Everyone has the right to free speech.
B1 noun /ˈreɪn.boʊ/

Rainbow

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.
A2 verb /ˈriːəlaɪz/

realize

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.
B1 adjective /rɪˈtaɪərd/

Retired

Meaning
having left one's job and ceased to work; withdrawn from activity
Example
My retired grandfather enjoys gardening in his free time.
A1 noun ˈræbɪt

rabbit

Meaning
A small mammal with long ears, long hind legs, and a short tail
Example
The rabbit ran quickly into the forest.
B2 noun /ˈrep.taɪl/

Reptile

Meaning
a cold-blooded animal with scaly skin that lays eggs on land
Example
The lizard is a common reptile found in gardens.
C1 noun /ˈrʌmpəs/

Rumpus

Meaning
a noisy disturbance; an uproar or commotion
Example
The children caused quite a rumpus in the playground.
A2 noun /roʊz/

Rose

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.
B2 noun /rʌst/

Rust

Meaning
reddish-brown coating formed on iron or steel by oxidation; corrosion
Example
The old car was covered in rust after years of neglect.
B2 noun /ˌrek.riˈeɪ.ʃən/

Recreation

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.
A1 noun /roʊd/

road

Meaning
a wide way leading from one place to another
Example
We drove along the road to the village.
B2 noun /ˌren.əˈveɪ.ʃən/

Renovation

Meaning
the act of renovating; restoration to a former better state
Example
The old house underwent a complete renovation last year.
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 verb /ˌriːɪnˈsteɪt/

reinstate

Meaning
To restore someone or something to their former position or condition.
Example
The company decided to reinstate the suspended employee.
B1 adjective /rɪˈmɑːrkəbl/

Remarkable

Meaning
worthy of attention; extraordinary; notable;
Example
His recovery from the illness was remarkable.
A2 adjective /ruːd/

Rude

Meaning
impolite; discourteous; lacking civility; rough or harsh in manner
Example
It was rude of him to interrupt the meeting.
B2 noun, verb /ˈriːteɪl/

retail

Meaning
the sale of goods to the public in small quantities for use or consumption rather than for resale
Example
The company specializes in the retail of clothing and accessories.
C1 noun ˈrɔɪəl ˈbɛŋɡəl ˈtaɪɡər

Royal Bengal Tiger

Meaning
A subspecies of tiger found primarily in India and Bangladesh, known for its distinctive orange coat with black stripes.
Example
The Royal Bengal Tiger is an iconic species of the Sundarbans.
A2 noun rɪˈsɜːtʃ

research

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.
C1 verb /rɪˈtɔːrt/

retort

Meaning
To reply quickly or sharply, often in a witty or angry manner.
Example
He quickly retorted that he was not to blame.
B2 verb /rɪˈtriːv/

retrieve

Meaning
to get something back that was lost or taken; to recover
Example
She managed to retrieve her lost phone from the taxi.
A2 verb /rɪˈmaɪnd/

remind

Meaning
to cause someone to remember something
Example
Please remind me to call her tomorrow.
C1 verb /ˌriːˈvaɪ.t̬əl.aɪz/

revitalize

Meaning
To restore energy and effectiveness to something.
Example
The new policies aim to revitalize the economy.
C1 verb /ˈrævɪdʒ/

ravage

Meaning
to cause severe and extensive damage or destruction
Example
The hurricane ravaged the coastal villages.
C1 adjective /rɪˈpɛlənt/

repellent

Meaning
Able to drive away something, especially insects or unpleasant things; causing disgust or distaste.
Example
This cream is highly effective as a mosquito repellent.
C1 noun /rɛnˈdɪʃən/

rendition

Meaning
a performance or interpretation of a piece of art, music, or text
Example
The singer gave a moving rendition of the classic song.
C1 noun /ˈroʊ.lɪŋ bɔːrd/

Rolling board

Meaning
a flat wooden or marble surface used for rolling out dough
Example
She placed the dough on the rolling board.
C1 noun /rɪˈvɒl.vər/

Revolver

Meaning
a pistol with revolving chambers enabling several shots to be fired without reloading
Example
The detective drew his revolver from its holster.
C1 verb /ˌrekəˈlekt/

recollect

Meaning
to remember something; to recall from memory
Example
I can't recollect where I put my keys.
C1 noun /rɪˈsɜː.dʒəns/

resurgence

Meaning
An increase or revival after a period of little activity, popularity, or occurrence.
Example
The city saw a resurgence in tourism after the pandemic.
B1 noun /ˈrʌnər/

runner

Meaning
a person who runs, especially in races or for exercise
Example
The runner crossed the finish line with a big smile.
B2 verb /rɪˈkleɪm/

reclaim

Meaning
To take back or recover something; to restore to a usable state.
Example
The farmer worked to reclaim the barren land.
C1 noun /rɪˈmɔːrs/

Remorse

Meaning
deep regret or guilt for a wrong committed; bitter regret for something done
Example
He felt deep remorse for his actions.
B1 adjective /rɪˈdɪk.jə.ləs/

Ridiculous

Meaning
extremely silly or unreasonable; deserving or causing laughter
Example
The idea of building a house without tools is ridiculous.
A2 noun, verb /ˈriːzən/

reason

Meaning
A cause, explanation, or justification for an action or event; to think or argue logically.
Example
There is no reason to be upset.
B1 noun /rɪˈleɪ.ʃən/

Relation

Meaning
the way in which two or more people or things are connected; a family member
Example
They have a strong business relation that has lasted for years.
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.
C1 noun /ˈrez.ɪ.dənt ˈkəʊ.ɔː.dɪ.neɪ.tər/

resident coordinator

Meaning
A local administrator or official who coordinates activities in a specific region.
Example
The resident coordinator welcomed all representatives.
B2 noun /roʊˈteɪʃən/

Rotation

Meaning
the action of rotating around an axis or center; a single turn
Example
The Earth's rotation takes 24 hours to complete.
B1 adjective /rɪˈpiː.tɪd/

Repeated

Meaning
done again; happening again; occurring multiple times
Example
He made repeated attempts to contact her.
C1 noun /ˈrɛpərˌtɔːri/

repertory

Meaning
A collection of works that a company, performer, or institution regularly performs; also a storehouse of information or skills.
Example
The theater has a repertory of classic plays.
C1 noun /rɪˈfɜːrər/

referrer

Meaning
a person who directs someone to another person or service
Example
The referrer earned a bonus for recommending a new client.
C2 noun /ˈrɒndoʊ/

rondo

Meaning
a musical composition with a recurring leading theme
Example
The pianist ended the recital with a lively rondo.
C2 verb /ˌrɛprɪˈhɛnd/

reprehend

Meaning
to express disapproval or criticism of someone or something
Example
The teacher reprehended the student for being dishonest.
C2 verb /ruː/

rue

Meaning
To feel regret or sorrow about something.
Example
She will rue the day she trusted him.
B1 noun /ˌrek.ə.menˈdeɪ.ʃən/

Recommendation

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.
C1 adjective /ˈrʌs.tɪk/

Rustic

Meaning
simple and unsophisticated; relating to rural areas
Example
The rustic cottage had wooden beams and a thatched roof.
C1 adjective /rɪˈkʌr.ənt/

Recurrent

Meaning
happening repeatedly; occurring again and again; periodic;
Example
She has been suffering from recurrent headaches for months.
C1 noun /ˈrɪdəns/

riddance

Meaning
The action of getting rid of something unwanted or unpleasant.
Example
His departure was considered a welcome riddance by the team.
C1 adjective /ˈreɡ.jʊ.lə.tər.i/

Regulatory

Meaning
Having the power to control or govern something through rules and regulations.
Example
The government enforces regulatory policies for financial stability.
B1 noun /ˈreɪlˌroʊd/

railroad

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.
C2 verb /rɪˈtrɛntʃ/

retrench

Meaning
to reduce costs, spending, or staff to save resources
Example
The company had to retrench employees due to financial difficulties.
C1 verb /rɪˈkuːpəreɪt/

recuperate

Meaning
to recover from illness or regain strength
Example
She went to the countryside to recuperate after surgery.
C2 verb /ˈrʌmpəl/

rumple

Meaning
to make something untidy or wrinkled by creasing or crumpling
Example
She accidentally rumpled her dress while packing.
C1 noun rɪˌkuːpərˈeɪʃən

recuperation

Meaning
The process of gradually recovering from illness or fatigue
Example
Rest is essential for recuperation after illness.
B1 adjective /rɪˈmeɪnɪŋ/

remaining

Meaning
still existing or left after others are gone or dealt with
Example
There were only a few remaining tickets for the concert.
C1 noun, verb /raʊt/

rout

Meaning
A decisive defeat; to defeat completely.
Example
The army routed the enemy forces in the battle.
B2 adverb /rɪˈpɔːtɪdli/

reportedly

Meaning
according to what is said or believed, although not confirmed
Example
The company has reportedly agreed to the new terms.
B2 noun ˌrev.əˈluː.ʃənz

revolutions

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.
B2 adjective /ˈræp.ɪd/

Rapid

Meaning
happening in a short time or at a fast pace
Example
The rapid growth of technology has changed our daily lives.
C1 noun ˌræʃ.ən.əl.ɪˈzeɪ.ʃən

rationalization

Meaning
The practice of finding reasons for behavior or actions that are not the real reasons.
Example
His rationalization of the mistake was not convincing.
C1 verb /rɪˈzaʊnd/

resound

Meaning
To fill a place with sound; to be celebrated or talked about widely.
Example
The hall resounded with applause.
B2 noun ˌreɪ.di.oʊ.ækˈtɪv.ə.ti

radioactivity

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.
C1 noun /ˌrætɪfɪˈkeɪʃən/

Ratification

Meaning
the action of signing or giving formal consent to a treaty, contract, or agreement
Example
The treaty required ratification by both countries' parliaments.
B1 noun /rɪˈpɔːrtər/

reporter

Meaning
a person who reports news or information
Example
The reporter interviewed several people at the scene.
B2 noun ˌrɛvəˈluːʃən

revolution

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.
C1 noun /ˌrɛfjʊˈteɪʃən/

refutation

Meaning
The act of proving a statement or argument to be false or incorrect.
Example
Her essay was a strong refutation of the opposing theory.
B2 verb /ræm/

ram

Meaning
to strike or push something with great force
Example
The truck rammed into the wall.
B2 verb /rɪˈstrɪkt/

restrict

Meaning
To limit the size, amount, or range of something.
Example
The government decided to restrict the use of plastic bags.
B1 noun /rɪˈspɒns/

Response

Meaning
a reaction to something; an answer or reply; the way in which something reacts to external stimulus
Example
The government's response to the crisis was swift and decisive.
B1 noun rɔː mətɪˈrɪəlz

raw materials

Meaning
The basic material from which a product is made.
Example
The factory imports raw materials for production.
C1 verb /ˈrætɪfaɪ/

ratify

Meaning
to approve or confirm something officially, usually by law or formal consent
Example
The government ratified the trade agreement.
C2 verb /rɪˈkænt/

recant

Meaning
to withdraw or renounce a statement or belief formally
Example
He recanted his previous statement in court.
C2 verb /rɪˈɡeɪl/

regale

Meaning
To entertain or amuse someone with stories, food, or drink.
Example
He regaled us with stories of his travels around the world.
C1 adjective /ˈrɛzənənt/

resonant

Meaning
Deep, clear, and continuing to sound or echo.
Example
The resonant voice of the speaker filled the hall.
C1 noun /ˌriː.pəˈkʌʃ.ən/

repercussion

Meaning
An unintended consequence occurring some time after an event or action.
Example
The economic crisis had severe repercussions on global trade.
C1 verb /reɪz/

raze

Meaning
To completely destroy or demolish something, especially a building.
Example
The old factory was razed to make way for new apartments.
C2 adjective /rɪˈfræktəri/

refractory

Meaning
Stubborn or resistant to control, authority, or treatment.
Example
The refractory child refused to follow the teacher's instructions.
C1 adjective /riˈækʃəˌneri/

reactionary

Meaning
Opposing political or social progress or reform; extremely conservative.
Example
The group took a reactionary stance against the new policies.
C1 adjective /ˌret.rəˈspek.tɪv/

Retrospective

Meaning
looking back on or dealing with past events or situations
Example
The museum held a retrospective exhibition of the artist's work.
C1 noun /ˈrɑːstər/

roster

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.
A2 adverb /ˈrɑː.ðər/

Rather

Meaning
to some extent; instead; preferably
Example
I would rather stay home than go to the party.
C1 noun /ˈræftər/

rafter

Meaning
One of the sloping beams that supports a roof.
Example
The old barn’s rafters were exposed.
B2 noun rɪˈzentmənt

resentment

Meaning
Bitter indignation at having been treated unfairly.
Example
Resentment grew among the students.
B1 adjective /ˌriːəˈlɪstɪk/

realistic

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.
C1 verb /rɪˈpʌls/

repulse

Meaning
to drive back an attack or attacker by force; to cause intense dislike or disgust
Example
The army managed to repulse the enemy attack.
B2 noun /ˈrɛzərvwɑːr/

reservoir

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.
B2 noun /ˈrɛlɪvəns/

relevance

Meaning
the quality or state of being closely connected or appropriate
Example
The relevance of the information was clear to everyone.
C2 noun /rʌmp/

Rump

Meaning
the hindquarters or buttocks; the lower back area
Example
The horse injured its rump during the fall.
C1 noun /ˌrek.ənˌsɪl.iˈeɪ.ʃən/

reconciliation

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.
C1 verb /ˌrevəˈluːʃənaɪz/

revolutionize

Meaning
Change (something) radically or fundamentally.
Example
Artificial intelligence is set to revolutionize the healthcare sector.
C1 adjective /rɪˈpliːt/

replete

Meaning
Filled or well-supplied with something; abundantly full.
Example
The book is replete with fascinating historical details.
C1 adjective /rɪˈbel.jəs/

Rebellious

Meaning
defying authority; resisting control; disobedient;
Example
The rebellious teenager refused to follow his parents' rules.
B2 verb /rɪˈstreɪn/

restrain

Meaning
to hold back or control; to limit or restrict
Example
Please restrain your dog.
C2 noun/adjective /rɪˈmɒnstrənt/

remonstrant

Meaning
A person who makes a forceful protest (noun); protesting or objecting (adjective).
Example
He was a remonstrant voice in the assembly.
C1 noun /ˌres.ɪˈteɪ.ʃən/

Recitation

Meaning
the action of reciting or repeating aloud from memory
Example
The poetry recitation contest was held in the auditorium.
C2 noun /ˈrɛdʒɪsaɪd/

regicide

Meaning
the act of killing a king
Example
The conspirators were executed for committing regicide.
B2 verb /roʊm/

roam

Meaning
to walk or travel without a specific destination; to wander
Example
Wild animals roam freely in the forest.
C2 noun /ˌrɛtroʊˈɡrɛʃən/

retrogression

Meaning
a return to a worse or less developed state
Example
The country experienced economic retrogression after the crisis.
C2 adjective rɪˈtɛn.tɪv

retentive

Meaning
Having strong memory or the ability to retain information for a long time.
Example
Students with a retentive memory excel in academics.
C1 noun /rɪˈkɜr.əns/

Recurrence

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.
C1 noun /rɪˈpɛərə/

repairer

Meaning
a person whose job is to fix damaged or broken things
Example
The repairer fixed the broken washing machine quickly.
C2 noun /ˈrʊkəri/

rookery

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.
C2 noun /rɪˈsɪdɪvɪst/

recidivist

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.
B2 adjective /ˈruːθ.ləs/

Ruthless

Meaning
showing no pity or compassion; cruel; merciless
Example
The ruthless dictator showed no mercy to his enemies.
A2 noun /rɪˈzʌlt/

result

Meaning
a consequence, effect, or outcome of something
Example
The result of the test was excellent.
B2 noun /rɪˈfreʃ.mənt/

Refreshment

Meaning
food and drink that is served as a light meal; something that refreshes
Example
We served light refreshments after the meeting.
B2 noun /ˈruːdnəs/

Rudeness

Meaning
the quality of being impolite, discourteous, or offensive in behavior or speech
Example
His rudeness shocked everyone at the dinner party.
C1 noun rɪˌdʒɛnəˈreɪʃən

regeneration

Meaning
Renewal, growth and development of cells, tissues or energy
Example
Proper rest allows muscle regeneration after exercise.
C2 adjective /ˈrɪz.ə.bəl/

risible

Meaning
so absurd or ridiculous that it deserves to be laughed at
Example
The idea of flying pigs is completely risible.
B2 adjective /ˈruː.tɪd/

Rooted

Meaning
deeply established; firmly fixed
Example
His beliefs are deeply rooted in tradition.
C1 noun /ˈraɪtʃəsnəs/

righteousness

Meaning
the quality of being morally right or justifiable
Example
His life was dedicated to righteousness and truth.
B1 verb /ˈreskjuː/

rescue

Meaning
to save someone or something from danger or harm
Example
The firefighters rescued the cat from the tree.
B2 noun /ˈrɛfjuːdʒ/

refuge

Meaning
a place that provides shelter or protection from danger or distress
Example
The villagers took refuge in the temple during the storm.
B1 noun /rɪˈvɪʒ.ən/

Revision

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.