Rapid
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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.
B2 noun /ˌref.jʊˈdʒiː/

Refugee

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.
C1 adjective /ˈriːɡəl/

regal

Meaning
Resembling or fit for a king; majestic or royal.
Example
The queen entered the hall with a regal presence.
C1 noun /ˈriːpər/

reaper

Meaning
a person or machine that cuts and gathers crops
Example
The reaper moved slowly through the golden fields.
C2 verb /rɪˈvaɪl/

revile

Meaning
to criticize in an abusive or angrily insulting manner
Example
The politician was reviled by the public for his corruption.
B2 verb /ˈrɛkən/

reckon

Meaning
To think, believe, or expect something; to calculate or estimate.
Example
I reckon it will rain later today.
C1 noun ˌrɛk.əˈlɛk.ʃən

Recollection

Meaning
Remembering past events or information
Example
His recollection of childhood memories was vivid.
C1 noun /rəʊˈbɒt.ɪk ˈsɜː.dʒər.i/

robotic surgery

Meaning
Surgery performed with the assistance of robotic systems to enhance precision and reduce invasiveness.
Example
Robotic surgery enhances precision in complex procedures.
C2 adjective /rɪˈflɛksəbl/

reflexible

Meaning
Capable of being reflected or bent back.
Example
The surface was highly reflexible, bouncing light in different directions.
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.
C1 adjective /rɪˈbel.jəs/

Rebellious

Meaning
defying authority; resisting control; disobedient;
Example
The rebellious teenager refused to follow his parents' rules.
C1 noun /rɪˌmjuː.nəˈreɪ.ʃən/

Remuneration

Meaning
money paid for work or services; compensation or reward
Example
The job offers excellent remuneration and benefits.
B2 noun, verb /ræŋks/

ranks

Meaning
Positions within a group, especially in a hierarchy or organization.
Example
He quickly moved up the ranks of the army.
C1 adjective /rɪˈtæl.i.ə.tɔːr.i/

retaliatory

Meaning
Taking action in response to another's action, characterized as punitive, revengeful, or counteractive.
Example
The country imposed retaliatory tariffs in response to trade sanctions.
C1 noun /rɔ ˈtɜrmərɪk/

Raw Turmeric

Meaning
fresh unprocessed root of the turmeric plant used as a spice and medicine
Example
Grate raw turmeric into the curry for authentic flavor.
C1 adjective /rɪˈsɔːrs ɪˈfɪʃ.ənt/

resource-efficient

Meaning
Using resources in a way that minimizes waste and maximizes productivity.
Example
Resource-efficient farming conserves water and energy.
B2 verb /rɪˈkɔːl/

recall

Meaning
to bring (a memory, fact, or situation) back into one's mind
Example
I can't recall the last time we met.
B2 verb /ˈruːɪn/

ruin

Meaning
to destroy or damage beyond repair; to spoil completely
Example
Heavy rain could ruin our picnic plans.
C1 verb /ˌriː.kənˈviːn/

reconvene

Meaning
to gather or assemble again, especially for a meeting
Example
The committee will reconvene after lunch.
B2 noun /ˈrɪk.ʃɔː/

Rickshaw

Meaning
a light two-wheeled passenger vehicle drawn by one or more people
Example
We took a rickshaw to reach the busy marketplace.
B2 noun /ˈreb.əl/

Rebel

Meaning
a person who resists authority or control
Example
The young rebel refused to follow the school rules.
C1 adjective /ˈraʊ.di/

Rowdy

Meaning
disorderly; unruly; noisy and disruptive
Example
The rowdy children were making too much noise.
C1 adjective /rɪˈpʌl.sɪv/

Repulsive

Meaning
extremely unpleasant; causing strong dislike or disgust
Example
The smell of rotten eggs was absolutely repulsive.
A2 adjective /ruːd/

Rude

Meaning
impolite; discourteous; lacking civility; rough or harsh in manner
Example
It was rude of him to interrupt the meeting.
C1 verb /ˈrɪvɪt/

rivet

Meaning
to fasten or secure with a rivet; to hold someone’s attention firmly
Example
The craftsman riveted the metal plates together.
A2 adjective /rɪˈspɒn.sə.bəl/

Responsible

Meaning
accountable; having duties; reliable and trustworthy
Example
Parents are responsible for their children's education and well-being.
B2 noun /ˌrɛɡ.jʊˈleɪ.ʃən/

regulation

Meaning
A rule or directive made and maintained by an authority.
Example
Government regulation ensures fair business practices.
B2 adjective /ˈrɪdʒ.ɪd/

Rigid

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.
C1 adjective /ˌrɛmɪˈnɪsənt/

reminiscent

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.
C1 noun/verb /rɪˈpriːv/

reprieve

Meaning
A temporary relief or delay from something unpleasant; to postpone or cancel punishment.
Example
The prisoner was granted a last-minute reprieve from execution.
C1 verb /ˌriːˈmɒdəl/

remodel

Meaning
To change the structure or form of something, especially a building.
Example
They decided to remodel their kitchen last summer.
C2 verb /rɪˈpruːv/

reprove

Meaning
to criticize or correct someone gently or disapprove of their actions
Example
The teacher reproved the student for being late.
B2 noun, verb /rɪər/

rear

Meaning
the back part of something; to bring up or raise children or animals
Example
The mother cat reared her kittens in a quiet corner.
C2 adjective /rɪˈkʌmbənt/

recumbent

Meaning
lying down or in a resting position
Example
He was found recumbent on the sofa after a long day.
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 /ˈroʊz ˈwɔː.tər/

Rose-water

Meaning
a flavored water made by steeping rose petals in water, used in cooking and cosmetics
Example
She added a few drops of rose-water to the dessert.
B1 noun rɔː mətɪˈrɪəlz

raw materials

Meaning
The basic material from which a product is made.
Example
The factory imports raw materials for production.
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.
C2 noun /ræŋˈɡuːn ˈkriːpər/

Rangoon creeper

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.
C1 noun /ˈrʌp.tʃər/

Rupture

Meaning
breaking or bursting apart; breakdown of relations
Example
The rupture in the pipeline caused a massive oil spill.
B2 noun /ˈreɪʃoʊ/

ratio

Meaning
a relationship between two numbers showing how many times the first number contains the second
Example
The ratio of boys to girls in the class is 2:1.
B2 adjective ˌrev.əˈluː.ʃən.ər.i

revolutionary

Meaning
Involving or causing a complete or dramatic change.
Example
Revolutionary ideas are reshaping the industry.
C1 adjective /ˈrʌɡ.ɪd/

Rugged

Meaning
rough and uneven; having a rough irregular surface; tough and strong
Example
The hikers crossed the rugged mountain terrain.
C2 noun /ˈreɪləri/

raillery

Meaning
good-humored teasing or joking
Example
Their friendship was full of light-hearted raillery.
B2 noun /ˌrɛprɪzɛnˈteɪʃən/

representation

Meaning
the action of speaking or acting on behalf of someone or something
Example
Her representation of the team was impeccable.
C1 noun /ˈrɛɡjəleɪtər/

regulator

Meaning
a person or device that controls or maintains the operation of a system
Example
The government appointed a new regulator for the financial sector.
C2 adjective /ˌriːkruːˈdɛsənt/

recrudescent

Meaning
reviving or breaking out again after a period of abatement
Example
Recrudescent tensions threatened the fragile ceasefire.
B1 verb /rɑːb/

rob

Meaning
to steal money or property from a person or place; to commit robbery
Example
The thief tried to rob the bank last night.
B1 noun /ˈriː.dʒən/

Region

Meaning
a particular area or part of a country or the world
Example
This region is famous for its wine production.
C2 adjective /rɪˈfʌldʒənt/

refulgent

Meaning
Shining brightly; radiant.
Example
The refulgent sun lit up the entire valley.
B1 adjective /rɔː/

Raw

Meaning
uncooked; not processed; in natural state; inexperienced
Example
The chef prefers to use raw vegetables in his salads.
B1 noun ruːlz ənd ˌrɛɡjʊˈleɪʃənz

rules and regulations

Meaning
Official orders and laws that control how something is done.
Example
Rules and regulations alone cannot change attitudes.
B2 noun, verb /rɪˈzɔːrt/

resort

Meaning
A place for rest or recreation; to turn to something for help or solution.
Example
They stayed at a beach resort during their vacation.
C2 noun /ˈrɛlɪkwɛri/

reliquary

Meaning
a container for holy relics
Example
The ancient reliquary was decorated with gold and precious stones.
A2 adjective /reər/

Rare

Meaning
not occurring very often; uncommon or unusual
Example
It's rare to find such beautiful handmade jewelry these days.
B2 noun /reɪdʒ/

rage

Meaning
intense anger or fury
Example
She shouted in a fit of rage after hearing the news.
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.
B2 noun /red liːf/

Red leaf

Meaning
red-colored leafy vegetable; amaranth leaves used as greens
Example
Red leaf is rich in iron and is commonly eaten in Bengali households.
C1 noun /rɪˈmɛmbrəns/

remembrance

Meaning
the act of remembering or honoring someone or something
Example
A service was held in remembrance of the fallen soldiers.
C2 noun /ˈrɪɡməˌroʊl/

rigmarole

Meaning
a long, complicated, and confusing process or story
Example
Getting a visa was such a rigmarole of paperwork and interviews.
C1 noun ˈrez.ɪ.djuːz

residues

Meaning
A small amount of something that remains after the main part has gone or been taken or used.
Example
The burning process leaves no harmful residues.
A1 verb /rɪˈmembə/

remember

Meaning
to bring a past event back into one's mind; to keep in memory
Example
I remember my first day at school.
B2 noun /ˈrɪə.lɪ.zəm/

realism

Meaning
The quality of representing things as they are; a practical or factual view.
Example
Her paintings are admired for their realism.
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.
B2 noun /ˌreɡ.jʊˈlær.ɪ.ti/

Regularity

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.
C1 adjective rɪˈsɛʃ.ən.er.i

recessionary

Meaning
Relating to or characterized by economic recession.
Example
Governments introduce policies to counter recessionary effects.
C2 noun /ˈræɡəmʌfɪn/

ragamuffin

Meaning
A person, typically a child, in ragged, dirty clothes.
Example
The little ragamuffin begged for food on the street.
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.
C1 noun /rɪˈfaɪnəri/

refinery

Meaning
an industrial facility where raw materials are processed and purified
Example
The oil refinery processes thousands of barrels daily.
A2 verb /raɪz/

rise

Meaning
to move upward; to get up from bed; to increase
Example
The sun rises in the east.
C2 noun /roʊˈtʌn.də/

rotunda

Meaning
a large circular building or hall, often with a dome
Example
Tourists gathered inside the grand rotunda of the capitol.
B1 adjective /roʊˈmæn.tɪk/

Romantic

Meaning
relating to love; idealistic; dreamy
Example
They enjoyed a romantic dinner by candlelight.
C1 adjective /ˈraɪtfəl/

rightful

Meaning
having a legitimate or just claim; proper or lawful
Example
She is the rightful owner of the property.
C1 adjective /rɪˈtaɪərɪŋ/

retiring

Meaning
Shy and reserved; avoiding social contact.
Example
She is a quiet, retiring woman who avoids attention.
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 noun /rɪˈpæst/

repast

Meaning
A meal or the food eaten during a meal.
Example
They enjoyed a delicious repast by the riverside.
C1 verb /rɪˈtreɪs/

retrace

Meaning
to go back over a path or route; to recall and repeat steps taken earlier
Example
She retraced her steps to find her lost keys.
C1 adjective /ˈræɡ.ɪd/

Ragged

Meaning
torn; tattered; frayed; shabby
Example
The homeless man wore ragged clothes.
C1 verb /riˈdʒɔɪn/

rejoin

Meaning
to join again or return to a group, place, or activity
Example
After a short break, she decided to rejoin the team.
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.
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.
B2 noun /ˈrem.ə.di/

Remedy

Meaning
a medicine or treatment for a disease; a solution to a problem
Example
This herbal remedy helps with headaches.
C1 noun /rɪˈpɔːrtɪʒ/

reportage

Meaning
the act of reporting news or describing events in the media
Example
The magazine is known for its detailed reportage of political issues.
C2 noun /ˌrep.ɑːˈtiː/

Repartee

Meaning
conversation or speech characterized by quick, witty comments or replies
Example
The dinner party was filled with brilliant repartee between the guests.
B2 verb /ˌriː.ɪnˈfɔːrs/

reinforce

Meaning
To strengthen or support something with additional material, people, or effort.
Example
The teacher used examples to reinforce the lesson.
C1 verb /rɒmp/

romp

Meaning
to play or move in a lively, carefree, and energetic way
Example
The children romped happily in the garden.
C1 adjective /rɪˈtɔːrɪkəl/

rhetorical

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.
C1 verb /ˈræn.də.maɪz/

randomize

Meaning
To make something happen in a random order or manner.
Example
The software can randomize the order of questions.
C1 noun/verb /ˈrɛprɪˌmænd/

reprimand

Meaning
A formal expression of disapproval; to scold or criticize someone officially.
Example
The teacher reprimanded the student for being late.
B2 noun /ˈraɪvəlri/

Rivalry

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.
B2 noun /ˈreɪsɪzəm/

racism

Meaning
the belief that some races are superior to others, leading to unfair treatment or prejudice
Example
The organization works to eliminate racism in all forms.
C1 adjective /rɪˈflek.sɪv/

Reflexive

Meaning
directed back on itself; showing deep thought about oneself
Example
She became more reflexive about her behavior after the feedback.
B2 noun /ˈruːlɪŋ/

ruling

Meaning
an official decision made by a judge or authority.
Example
The court’s ruling favored the defendant.
C1 adjective /ˈroʊtəri/

rotary

Meaning
Relating to or characterized by rotation; revolving around an axis.
Example
The machine uses a rotary engine to function efficiently.
A2 noun /rɪˈzʌlt/

result

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

Revival

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.
B2 noun ˌreɪdɪˈeɪʃən

radiation

Meaning
The emission of energy as electromagnetic waves or as moving subatomic particles.
Example
Radiation from the sun can be harmful without protection.
B1 noun ˈreɪn.fɒr.ɪst

rainforest

Meaning
A luxuriant, dense forest rich in biodiversity, found typically in tropical areas with consistently heavy rainfall.
Example
The Amazon rainforest is home to millions of species.
C1 adjective /rɪˈzɪdjuəl/

residual

Meaning
Remaining after the greater part has gone.
Example
The patient experienced residual pain after the surgery.
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.
A1 adjective /ˈrɛd.i/

ready

Meaning
Prepared or available for use or action.
Example
She was ready to leave for the airport.
C1 verb rɪˈplɛn.ɪʃ

replenish

Meaning
Fill something up again.
Example
Drinking water helps replenish lost fluids in the body.
B2 noun, verb, adjective /ræŋk/

rank

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.
B2 noun /ˌrezəˈveɪʃən/

Reservation

Meaning
the action of reserving something; an arrangement whereby something is reserved for a particular person; a qualification to an expression of agreement or approval
Example
I made a reservation at the restaurant for tonight.
B2 noun /ˈraɪfəl/

Rifle

Meaning
a gun with a long barrel that is fired from the shoulder
Example
The soldier carried a rifle during the mission.
B2 noun /rɪˈmuː.vəl/

Removal

Meaning
the action of taking something away or eliminating it; dismissal from office
Example
The removal of the old furniture took all 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.
A2 verb /rɪˈmaɪnd/

remind

Meaning
to cause someone to remember something
Example
Please remind me to call her tomorrow.
C2 verb /rɪˈkwaɪt/

requite

Meaning
to return or repay a favor, service, or feeling
Example
She requited his kindness with a thoughtful gift.
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.
B2 adjective ˈræd.ɪ.kəl

radical

Meaning
Capable of bringing fundamental changes opposite to conventional beliefs or systems.
Example
The leader proposed radical economic reforms.
A2 verb /rɪˈmeɪn/

remain

Meaning
to stay in the same place; to continue to exist
Example
Only a few guests remain at the party.
B2 adjective /ˈreɪʃəl/

racial

Meaning
relating to a race of people
Example
Racial equality is an important issue in many societies.
B2 noun ˈruθləs ˌkɑmpəˈtɪʃən

ruthless competition

Meaning
Fierce and merciless rivalry or contest, without pity or compassion.
Example
Ruthless competition for power leads to societal issues.
B2 adjective /ˈreɪsɪst/

racist

Meaning
showing or feeling discrimination or prejudice against people of other races
Example
He was accused of making racist comments.
B2 noun rɪˈzɪl.i.əns

resilience

Meaning
The ability to recover quickly from difficulties; toughness.
Example
Testing the resilience of wood is crucial.
B2 adjective /ˈrest.ləs/

Restless

Meaning
unable to rest or relax; constantly moving or fidgeting
Example
The child was restless during the long car journey.
B1 verb /rɪˈtaɪə/

retire

Meaning
to stop working after reaching a certain age or having completed a career
Example
She decided to retire after working for 40 years.
A1 noun /reɪn/

Rain

Meaning
water that falls from clouds in small drops
Example
The heavy rain forced us to stay indoors.
C1 verb /riːˈpeɪ.tri.eɪt/

repatriate

Meaning
To return someone to their own country, often after war or imprisonment.
Example
The government worked to repatriate the refugees safely.
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.