rigorous
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B2 adjective /ˈrɪɡ.ər.əs/

rigorous

Meaning
Extremely thorough and demanding in analysis or practice.
Example
A rigorous study plan helps students achieve better results.
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.
B2 noun /rɪˈfjuː.zəl/

Refusal

Meaning
the act of saying no to something or not accepting something
Example
His refusal to cooperate made the project more difficult.
B2 noun /ˌrɛvəˈleɪʃən/

revelation

Meaning
A surprising and previously unknown fact, especially one made known in a dramatic way.
Example
The book was full of shocking revelations about the politician.
B2 verb /rɪˈkruːt/

recruit

Meaning
to enlist or hire people for a job, service, or membership
Example
The company is trying to recruit more software engineers.
B2 adverb /rɪˈlʌk.tənt.li/

Reluctantly

Meaning
in an unwilling manner; with hesitation or resistance
Example
She reluctantly agreed to help with the project.
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 /reɪdʒ/

rage

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

rebuild

Meaning
to build something again after it has been damaged or destroyed
Example
The villagers worked together to rebuild the bridge after the flood.
B2 verb /ˈreɪn.dʒɪŋ/

ranging

Meaning
Extending or varying between limits.
Example
The temperatures are ranging from 15 to 30 degrees this week.
B2 verb /reɪp/

rape

Meaning
to force someone to have sexual intercourse without their consent
Example
The law strictly punishes those who commit rape.
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.
B2 verb /rɪˈfaɪn/

refine

Meaning
to improve by making small changes; to purify
Example
The chef refines the recipe to perfection.
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 noun /ˌrɛɡ.jʊˈleɪ.ʃən/

regulation

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

Rational

Meaning
based on reason and logic; sensible and practical
Example
She made a rational decision based on the available facts.
B2 verb /rɪˈzɛmbəl/

resemble

Meaning
to look like or be similar to something or someone
Example
She resembles her mother in both appearance and mannerisms.
B2 adjective /rɪˈfaɪnd/

Refined

Meaning
elegant and cultured in appearance, manner, or taste; purified
Example
She has very refined taste in art and music.
B2 adjective /rɪˈspɒn.sɪv/

Responsive

Meaning
reacting quickly and positively; readily reacting to suggestions or changes
Example
The website is very responsive and loads quickly on all devices.
B2 verb /ˈrɛkən/

reckon

Meaning
To think, believe, or expect something; to calculate or estimate.
Example
I reckon it will rain later today.
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 /ˌrɛfəˈriː/

referee

Meaning
a person who oversees a game or match to ensure the rules are followed
Example
The referee stopped the game after a foul.
B2 noun ˈrɛvənuː

revenue

Meaning
Income, especially when of a company or organization.
Example
The company's revenue grew by 10% this year.
B2 verb rɪˈzaɪn

resign

Meaning
Voluntarily leave a job or other position.
Example
Ministers were forced to resign.
B2 verb /rɪp/

rip

Meaning
to tear something quickly or violently
Example
He accidentally ripped his shirt on the fence.
B2 adjective /rɪˈliːvd/

relieved

Meaning
feeling happy and less worried after something stressful has been removed or resolved
Example
She felt relieved after hearing the good news.
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.
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.
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.
B2 noun /ˌrɪəlɪˈzeɪʃən/

realization

Meaning
the act of becoming fully aware of something as a fact
Example
Her realization of the problem helped solve the issue.
B2 noun rɪˈzentmənt

resentment

Meaning
Bitter indignation at having been treated unfairly.
Example
Resentment grew among the students.
B2 verb /rɪˈzuːm/

resume

Meaning
to start again after a pause or interruption
Example
We will resume the meeting after lunch.
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.
B2 adverb /ˈred.ɪ.li/

Readily

Meaning
willingly; easily; without hesitation
Example
She readily agreed to help with the project.
B2 verb /riːˈɔːrɡənaɪz/

reorganize

Meaning
to arrange something again in a different way for greater efficiency or order
Example
The manager decided to reorganize the team structure.
B2 adjective /rɪˈspek.tə.bəl/

Respectable

Meaning
worthy of respect; having good reputation; decent
Example
He comes from a respectable family in the community.
B2 noun /ˈruːstər/

rooster

Meaning
A male domestic chicken, especially one that crows.
Example
The rooster crowed at dawn, waking up the whole village.
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.
B2 noun /ˈreɪn.dʒər/

ranger

Meaning
A person responsible for protecting and managing forests, parks, or natural areas.
Example
The park ranger guided the tourists through the forest trail.
B2 noun ˌrɛstəˈreɪʃən

restoration

Meaning
The process of returning something to its former condition.
Example
The restoration of the forest began after decades of neglect.
B2 noun /ˈroʊ.lɪŋ pɪn/

Rolling pin

Meaning
a cylindrical tool used for rolling out dough or pastry
Example
Roll the dough flat with a rolling pin.
B2 verb /ˌriː.kənˈsɪd.ər/

reconsider

Meaning
to think about something again, especially to change a decision or opinion
Example
She decided to reconsider her decision about moving abroad.
B2 verb /ræm/

ram

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

reliability

Meaning
the quality of being trustworthy or performing consistently well
Example
Customers value the reliability of our service.
B2 noun /rɒd/

rod

Meaning
a thin straight bar, especially of metal or wood
Example
He used an iron rod to support the structure.
B2 noun/verb rɪˈfɔːm

reform

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.
B2 adjective /rɪˈlaɪ.ənt/

reliant

Meaning
depending on someone or something for support
Example
The country is too reliant on imported goods.
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 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.
B2 verb /rɪˈvɜːs/

reverse

Meaning
to change something to the opposite direction, position, or result
Example
She quickly reversed the car out of the driveway.
B2 noun /ˈruːlɪŋ/

ruling

Meaning
an official decision made by a judge or authority.
Example
The court’s ruling favored the defendant.
B2 adverb /ruːˈtiːnli/

routinely

Meaning
as part of a regular procedure; habitually
Example
The staff routinely checks the equipment for safety.
B2 adjective /rɪˈfreʃ.ɪŋ/

Refreshing

Meaning
making one feel energized and renewed; pleasantly new or different
Example
The cool breeze was refreshing after the hot day.
B2 noun /rɪˈsɛs/

recess

Meaning
A short break from work or school; also a small space set back in a wall.
Example
The children played outside during recess.
B2 verb /riːp/

reap

Meaning
to cut or gather a crop; to receive as a consequence of actions
Example
Farmers reap wheat in the late summer.
B2 verb /ˈroʊ.teɪt/

rotate

Meaning
to turn around a central point or axis
Example
The Earth rotates on its axis once every 24 hours.
B2 adjective /ˈruː.tɪd/

Rooted

Meaning
deeply established; firmly fixed
Example
His beliefs are deeply rooted in tradition.
B2 adjective /ˈrɪtʃ.u.əl/

Ritual

Meaning
relating to religious or ceremonial practices
Example
The wedding ceremony included many traditional ritual elements.
B2 noun /ræntʃ/

ranch

Meaning
a large farm where animals such as cattle or sheep are raised
Example
They own a huge cattle ranch in Texas.
B2 adverb /ˈraɪtli/

Rightly

Meaning
correctly; properly; justly
Example
She rightly pointed out the mistakes in the report.
B2 adjective /rɪˈflektɪv/

Reflective

Meaning
thoughtful; contemplative; able to reflect light or images
Example
After the meeting, he was in a reflective mood.
B2 noun /rɪˈsiː.vər/

Receiver

Meaning
a person or thing that receives something; the part of a telephone containing the earpiece and mouthpiece
Example
She picked up the receiver to answer the phone call.
B2 verb /ˈrʌm.bəl/

rumble

Meaning
to make a continuous deep, resonant sound
Example
Thunder rumbled in the distance.
B2 noun /rɪˈmeɪnz/

remains

Meaning
the parts, pieces, or substances that are left after the rest has been used or removed
Example
The remains of the meal were left on the table.
B2 noun /ˈreɪ.dɑːr/

Radar

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.
B2 noun /ˈrɒbər/

robber

Meaning
a person who steals property from others, often using force or threat
Example
The robber was caught after a quick police chase.
B2 noun /ˈroʊstɪd miːt/

Roasted meat

Meaning
meat cooked by dry heat in an oven or over fire
Example
The roasted meat was perfectly seasoned and tender.
B2 noun /ˌriː.əˈʃʊr.əns/

Reassurance

Meaning
comfort or confidence given to someone to remove their fears or doubts
Example
She needed reassurance that everything would be okay.
B2 noun /rɪˈmeɪn.dər/

Remainder

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.
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.
B2 verb /ˈruːɪn/

ruin

Meaning
to destroy or damage beyond repair; to spoil completely
Example
Heavy rain could ruin our picnic plans.
B2 adverb /rɪˈɡɑrdləs/

regardless

Meaning
without paying attention to the current situation or condition
Example
She will go to the party regardless of the weather.
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.
B2 noun /ˈruːmər/

Rumour

Meaning
a currently circulating story or report of uncertain or doubtful truth; gossip
Example
There's a rumour that the company will close next month.
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.
B2 noun /ˈrest.ləs.nəs/

Restlessness

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.
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.
B2 adjective /rɪˈmuːvəbəl/

removable

Meaning
able to be removed or taken away
Example
This phone has a removable battery.
B2 adjective /ˈroʊlɪŋ/

rolling

Meaning
moving in gentle undulations; moving forward by turning over and over
Example
They drove through the rolling hills of the countryside.
B2 verb /ˈrendər/

render

Meaning
to provide or give; to make or cause to become
Example
The artist renders the scene beautifully.
B2 noun /ˈraɪvəl/

Rival

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.
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.
B2 verb /rɪˈfreɪn/

refrain

Meaning
To hold oneself back from doing something.
Example
Please refrain from smoking in this area.
B2 noun /roʊst/

Roast

Meaning
Meat cooked by dry heat in an oven or over an open fire
Example
The Sunday roast was perfectly cooked and very tender.
B2 noun /ˈrækɪt/

racket

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.
B2 noun /rɪˈdʒɛkʃən/

rejection

Meaning
the action of refusing or dismissing something or someone
Example
Her rejection of the offer surprised everyone.
B2 verb /reɪn/

reign

Meaning
to rule as a king or queen; to be dominant
Example
The queen reigned for over sixty years.
B2 noun ˌriːkənˈstrʌkʃn

reconstruction

Meaning
The action or process of reconstructing or being reconstructed.
Example
The reconstruction project took years.
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 noun /ˈrɛlɪvənsi/

relevancy

Meaning
the quality of being closely connected or appropriate
Example
The professor questioned the relevancy of the example to the topic.
B2 adjective rɪˈnaʊnd

renowned

Meaning
Known or talked about by many people; famous.
Example
The renowned scientist led the reform panel.
B2 noun /rɪˈlʌk.təns/

Reluctance

Meaning
unwillingness to do something; hesitation
Example
He showed reluctance to accept the job offer.
B2 noun /ˈrɪdəl/

Riddle

Meaning
a question or statement intentionally phrased so as to require ingenuity in ascertaining its answer or meaning; a puzzle
Example
The ancient riddle stumped all the scholars for years.
B2 adjective /ˈrek.ləs/

Reckless

Meaning
acting without thinking about consequences; careless; dangerous;
Example
His reckless driving caused a serious accident.
B2 verb /rɪˈdʒɔɪs/

rejoice

Meaning
to feel or show great joy; to celebrate
Example
The family rejoices at the good news.
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 verb /rɪˈzaɪd/

reside

Meaning
to live or dwell in a particular place
Example
They reside in a large house near the river.
B2 adjective /rɪˈspek.tɪv/

Respective

Meaning
belonging to each individual; particular to each
Example
The students returned to their respective classrooms after lunch.
B2 noun /rɪˈvendʒ/

Revenge

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.
B2 noun /rɪˈhɜːr.səl/

Rehearsal

Meaning
a practice performance of a play, concert, or other work for later public performance
Example
The final rehearsal before opening night went perfectly.
B2 verb /rɪˈkɜːr/

recur

Meaning
to happen again, especially repeatedly or at regular intervals
Example
The headache tends to recur every few weeks.
B2 verb /ˌriːprəˈdjuːs/

reproduce

Meaning
To make a copy of something; to generate offspring.
Example
Many animals reproduce rapidly in favorable conditions.
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 adjective /rɪˈsɔːrsfəl/

resourceful

Meaning
Having the ability to find quick and clever ways to overcome difficulties.
Example
She is very resourceful when it comes to solving unexpected problems.
B2 noun rɪˈzɪl.i.əns

resilience

Meaning
The ability to recover quickly from difficulties; toughness.
Example
Testing the resilience of wood is crucial.
B2 noun rɪˈsɛʃ.ən

recession

Meaning
A period of temporary economic decline during which trade and industrial activity are reduced.
Example
The country faced a severe recession due to the financial crisis.
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 adjective /ræʃ/

rash

Meaning
Acting quickly without careful consideration; reckless.
Example
It was a rash decision to invest without research.
B2 noun /ˈreɪ.zər/

Razor

Meaning
a sharp-edged instrument used for shaving hair from the skin
Example
He shaved his beard with a sharp razor.
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.
B2 noun /ˈrɔɪəlti/

royalty

Meaning
Members of a royal family or payment made to the owner of a patent, copyright, or natural resource.
Example
The author receives a royalty for every book sold.
B2 noun ˈrɛstɪŋ pleɪs

resting place

Meaning
A place where someone or something rests, especially a burial site.
Example
The resting place of the martyrs is near the river.
B2 noun /ˈrɪb.ən/

ribbon

Meaning
a long, narrow strip of fabric used for tying or decoration
Example
She tied her hair with a red ribbon.
B2 noun/verb /rɪˈmɑːrk/

remark

Meaning
something that is said; a comment
Example
She made a remark about the weather.
B2 verb /ˈreɡjəleɪt/

regulate

Meaning
to control or maintain according to rules or laws
Example
The government regulates food safety.
B2 adjective /ˈruː.mi/

Roomy

Meaning
spacious; having a lot of room
Example
The apartment is very roomy with spacious bedrooms.
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 verb /rɪˈzɪst/

resist

Meaning
to oppose or fight against; to withstand
Example
He could not resist the temptation.
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.
B2 noun /ˈrɒbəɹi/

robbery

Meaning
the crime of stealing from someone or somewhere using force or threat
Example
The police are investigating the robbery at the local store.