rationale
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C1 noun /ˌræʃəˈnæl/

rationale

Meaning
the underlying reason or explanation for something
Example
The rationale behind his decision was clearly explained.
B2 noun /ˈrɛnəˌsɑːns/

renaissance

Meaning
a revival of art, culture, or learning; a period of renewed interest and growth
Example
The city experienced a cultural renaissance during the 1990s.
C1 noun /rɪˌdʒuːvəˈneɪʃən/

rejuvenation

Meaning
The process of restoring something to a former better state, especially referring to renewing soil fertility or revitalizing agricultural land through various restoration practices.
Example
Rejuvenation of soil is necessary for sustainable agriculture.
C2 noun /ˌræʃioʊsɪˈneɪʃən/

ratiocination

Meaning
the process of reasoning or logical thinking
Example
His ratiocination impressed the judges during the debate.
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.
C2 adjective /roʊn/

roan

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.
B1 verb /ˈrɛdʒɪstər/

register

Meaning
To enter or record officially on a list or in a book.
Example
You must register for the conference before the deadline.
C2 adjective /ˈrɪbɔːld/

ribald

Meaning
Referring to sexual matters in a humorous or vulgar way.
Example
The comedian’s ribald jokes made the audience laugh uncomfortably.
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.
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.
C1 verb /rɪˈdiːm/

redeem

Meaning
to compensate for faults or mistakes; to exchange something for value
Example
He managed to redeem his reputation after the scandal.
C1 verb /ˈrɛplɪkeɪt/

replicate

Meaning
to copy, reproduce, or duplicate something exactly
Example
The scientist tried to replicate the experiment for accuracy.
B2 noun/verb /rɪˈmɑːrk/

remark

Meaning
something that is said; a comment
Example
She made a remark about the weather.
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 adjective /rɪˈlʌktənt/

Reluctant

Meaning
unwilling; hesitant; disinclined to do something;
Example
She was reluctant to share her personal information.
C1 noun /rɪˈdʌn.dəns/

Redundance

Meaning
the state of being not or no longer needed or useful; superfluous repetition of information
Example
The document contained redundance that made it unnecessarily long.
B2 noun /'ræd.ɪʃ/

Radish

Meaning
a small pungent edible root vegetable with white or red skin
Example
The farmer harvested fresh radishes from the garden.
C1 adjective /rɪˈpen.tənt/

Repentant

Meaning
feeling or expressing sincere regret and remorse; sorry for one's actions
Example
The repentant thief returned the stolen money.
C1 noun rɪˈdɛmpʃən

redemption

Meaning
The action of saving or being saved from sin, error, or evil.
Example
The story highlights the theme of redemption.
B2 verb /rɒt/

rot

Meaning
to decay or decompose; to become corrupt
Example
The fruit will rot if left in the sun.
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.
C1 adjective /ˈrɛtroʊˌɡreɪd/

retrograde

Meaning
moving backward or returning to a worse condition
Example
The policy was seen as a retrograde step for human rights.
C2 verb /ˈrʌstɪkeɪt/

rusticate

Meaning
To go to the countryside or to suspend someone from university.
Example
He decided to rusticate in the village to escape the busy city life.
C1 verb /ˌrevəˈluːʃənaɪz/

revolutionize

Meaning
Change (something) radically or fundamentally.
Example
Artificial intelligence is set to revolutionize the healthcare sector.
C2 adjective /ˈrɛkriənt/

recreant

Meaning
cowardly or unfaithful to duty
Example
The recreant soldier abandoned his post in fear.
C1 noun ˌriːˈstrʌk.tʃər.ɪŋ

restructuring

Meaning
The action of organizing something differently.
Example
The company underwent restructuring to improve efficiency.
C2 adjective /ˈreɪ.moʊs/

ramose

Meaning
having many branches.
Example
The ramose tree shaded the entire garden.
A2 noun /rɪˈzʌlt/

result

Meaning
a consequence, effect, or outcome of something
Example
The result of the test was excellent.
B1 noun rɪˌspɒnsəˈbɪlɪti

responsibility

Meaning
The state or fact of having a duty to deal with something or of having control over someone.
Example
Taking responsibility for one's actions is a sign of maturity.
C2 verb /rɪˈmɒnstreɪt/

remonstrate

Meaning
To make a forceful protest or objection.
Example
Citizens remonstrated against the new tax policy.
B2 noun /rɪˈstrɪk.ʃən/

Restriction

Meaning
a limiting condition or measure; the limitation or control of someone or something
Example
There are strict restrictions on smoking in public places.
B2 verb /rɪˈtriːt/

retreat

Meaning
to move back or withdraw from a position or situation
Example
The soldiers had to retreat after losing the battle.
A2 noun /rent/

Rent

Meaning
a payment made periodically by a tenant to a landlord for use of property
Example
The monthly rent for this apartment is quite affordable.
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.
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 /ˌrɪəlɪˈzeɪʃən/

realization

Meaning
the act of becoming fully aware of something as a fact
Example
Her realization of the problem helped solve the issue.
C1 verb /rɪˈdrɛs/

redress

Meaning
to set right, remedy, or compensate for a wrong or grievance
Example
The company promised to redress the complaints of its customers.
B2 adverb /ruːˈtiːnli/

routinely

Meaning
as part of a regular procedure; habitually
Example
The staff routinely checks the equipment for safety.
C1 noun/verb /reɪn/

rein

Meaning
A strap used to control a horse; to control or guide something.
Example
The rider pulled the rein to stop the horse.
A1 adjective /red/

Red

Meaning
having the color of blood or fire; of the color red
Example
She wore a beautiful red dress to the party.
C1 noun /ˌriː.dɪs.trɪˈbjuː.ʃən/

redistribution

Meaning
The sharing of wealth or resources more equally among society.
Example
The government introduced a redistribution policy to reduce inequality.
B1 noun /rɪˈpɔːtɪŋ/

reporting

Meaning
the act of giving news or information about something
Example
Good reporting is essential for public awareness.
C1 noun rɪˈfaɪnmənt

refinement

Meaning
The process of removing impurities or unwanted elements from a substance.
Example
His manners showed a refinement that made him stand out in any crowd.
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.
C1 adjective /rɪˈtɜː.nə.bəl/

Returnable

Meaning
able to be returned or given back
Example
The bottle is returnable for a deposit refund.
C2 noun /ruːˈeɪ/

roue

Meaning
A man devoted to a life of sensual pleasure; a debauched man.
Example
The old roue squandered his fortune on gambling and women.
C1 noun /ˈrʌp.tʃər/

Rupture

Meaning
breaking or bursting apart; breakdown of relations
Example
The rupture in the pipeline caused a massive oil spill.
C2 verb /ˈrævəl/

ravel

Meaning
to tangle or complicate; to untangle or unravel depending on context
Example
She began to ravel the loose threads of the sweater.
A2 noun /ræt/

Rat

Meaning
a large long-tailed rodent that is typically considered a pest
Example
The rat scurried across the kitchen floor.
C2 adjective /rɪˈdjuːsəbl̩/

reducible

Meaning
capable of being simplified, lessened, or made smaller
Example
The problem is complex but reducible to a few basic principles.
B2 noun /rɪˈmaɪndər/

reminder

Meaning
something that helps you remember a fact, event, or action that you need to do or recall
Example
He set a reminder to call his mother on her birthday.
C1 adjective /rɪˈdʒɛn.ə.rə.tɪv/

regenerative

Meaning
Able to restore or renew damaged environments, soil, or resources.
Example
Regenerative farming improves soil health and biodiversity.
B1 noun /roʊp/

rope

Meaning
a strong, thick cord made of twisted fibers or strands
Example
The climbers used a rope to scale the mountain.
A2 verb /rɪˈpiːt/

repeat

Meaning
to say or do something again
Example
Could you please repeat what you just said?
C2 noun /rɪˈsɪʒən/

rescission

Meaning
the cancellation or annulment of a law, contract, or agreement
Example
The rescission of the contract left both parties disappointed.
C2 adjective /rɪˈmɪs/

remiss

Meaning
Negligent in performing a duty or responsibility.
Example
The manager was remiss in not checking the financial reports carefully.
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 /ræk/

Rack

Meaning
a framework or structure for holding or storing things
Example
She hung her coat on the rack by the door.
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.
B1 adjective, noun /ˈroʊmən/

roman

Meaning
relating to Rome or its people; a citizen of ancient Rome
Example
The Roman Empire influenced much of modern civilization.
C1 noun /rɪˈpʌlʃən/

Repulsion

Meaning
a feeling of intense distaste or disgust; a force under the influence of which objects tend to move away from each other
Example
She felt a strong repulsion towards the idea of eating insects.
B2 verb /rɪˈzuːm/

resume

Meaning
to start again after a pause or interruption
Example
We will resume the meeting after lunch.
C1 verb /ˈrevəl/

revel

Meaning
to enjoy oneself in a lively and noisy way; to take great pleasure in
Example
They revel in their success.
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.
C1 noun /rɪˈmɪʃən/

remission

Meaning
A temporary or permanent decrease or disappearance of disease symptoms; forgiveness of sins or debts.
Example
The patient’s cancer is in remission after the treatment.
B2 adjective /ˈruː.mi/

Roomy

Meaning
spacious; having a lot of room
Example
The apartment is very roomy with spacious bedrooms.
C1 noun /ˌrɛstɪˈtjuːʃən/

restitution

Meaning
The act of restoring something to its rightful owner or compensating for loss
Example
The court ordered restitution to the victims of the fraud.
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.
B2 adverb /ˈræp.ɪd.li/

Rapidly

Meaning
at a fast speed; quickly
Example
The company is rapidly expanding into new markets.
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 verb /rɪˈkuːpəreɪt/

recuperate

Meaning
to recover from illness or regain strength
Example
She went to the countryside to recuperate after surgery.
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.
B1 adverb /ˈrʌfli/

Roughly

Meaning
approximately; in a harsh or violent way
Example
The project will take roughly three months to complete.
C1 noun /ˈruːbrɪk/

rubric

Meaning
A set of instructions, rules, or a heading in a document, often used for grading criteria.
Example
The teacher provided a grading rubric for the assignment.
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.
C1 verb /ˈrʌsl/

rustle

Meaning
To make a soft, light sound like leaves or paper moving.
Example
The leaves rustled gently in the evening breeze.
C2 noun /ˌrɛprɪˈhɛnʃən/

reprehension

Meaning
The act of rebuking or criticizing severely.
Example
The teacher’s reprehension of the student’s behavior was justified.
B1 verb /rɪˈkʌvər/

recover

Meaning
To return to a normal state of health, mind, or strength; to regain or save something.
Example
The world is struggling to recover from the pandemic.
C2 noun /rɪˈfræk.tər/

refractor

Meaning
A type of telescope that uses lenses to focus light.
Example
Refractor telescopes use lenses to focus light.
B2 noun /ˈrerəti/

Rarity

Meaning
the state of being rare; something that is uncommon or scarce
Example
The antique vase was a rarity worth thousands of dollars.
C1 adjective /rɪˈvɜː.sə.bəl/

Reversible

Meaning
able to be turned the other way around; able to be undone or changed back
Example
This jacket is reversible and can be worn on both sides.
A2 verb /rɪˈmeɪn/

remain

Meaning
to stay in the same place; to continue to exist
Example
Only a few guests remain at the party.
C1 noun /ˈrɛtrəsˌpɛkt/

retrospect

Meaning
the act of looking back on or reviewing past events
Example
In retrospect, the decision seemed unwise.
C1 noun /rɪˈdʒɪdəti/

Rigidity

Meaning
inability to bend or be forced out of shape; unwillingness to change or compromise
Example
The rigidity of the old system prevented any innovation.
A1 verb /rʌn/

run

Meaning
to move quickly on foot; to operate or function
Example
I run every morning for exercise.
B1 verb /rɪˈtɜrnɪŋ/

returning

Meaning
Coming or going back to a place or person.
Example
The group is returning to the port on December 25th.
C1 adjective /ˈrek.wɪ.zɪt/

Requisite

Meaning
made necessary by particular circumstances; required
Example
Good communication skills are requisite for this job.
B2 noun /rɪˈlʌk.təns/

Reluctance

Meaning
unwillingness to do something; hesitation
Example
He showed reluctance to accept the job offer.
C1 adverb /rɪˈspek.tə.bli/

Respectably

Meaning
in a way that is worthy of respect; decently; properly
Example
She was dressed respectably for the interview.
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 adjective ˌriːprəˈdʌktɪv

reproductive

Meaning
Relating to the reproduction of offspring.
Example
The reproductive cycle of pests can cause rapid infestations.
C1 adjective /ˈræmʃækəl/

ramshackle

Meaning
poorly built or maintained; in a state of disrepair
Example
They lived in a ramshackle old house on the edge of town.
C1 noun /ˈræʃən/

ration

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.
C2 adjective /rɪˈmiːdiəbl/

remediable

Meaning
capable of being corrected or cured
Example
The mistake was serious but still remediable.
A1 adjective /ˈreɪ.di.əʊ/

radio

Meaning
Relating to radio waves or broadcasting.
Example
FAST is the largest radio telescope in the world.
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.
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.
C1 verb /ˈræʃənaɪz/

rationlize

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.
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.
C1 verb /ˌriːˈvaɪ.t̬əl.aɪz/

revitalize

Meaning
To restore energy and effectiveness to something.
Example
The new policies aim to revitalize the economy.
B1 noun riˈæləti

reality

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.
C1 noun ˌrev.əˈluː.ʃən.ər.i ɪˈnɪʃ.ə.tɪv

revolutionary initiative

Meaning
A groundbreaking action or plan that brings about significant change or transformation.
Example
The revolutionary initiative promotes sustainable energy.
C1 adjective /riˈæk.tɪv/

Reactive

Meaning
responding to situations rather than initiating them; chemically active
Example
The company took a reactive approach to customer complaints.
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 verb /roʊm/

roam

Meaning
to walk or travel without a specific destination; to wander
Example
Wild animals roam freely in the forest.
A2 verb riˈsaɪklɪŋ

recycling

Meaning
The process of converting waste materials into new materials and objects to prevent waste.
Example
Recycling plastic helps in reducing waste.
C1 adjective /ˈræmpənt/

rampant

Meaning
existing or spreading unchecked, often in an undesirable way
Example
Corruption was rampant in the city administration.
C2 noun /ˌræproʊʃˈmɑːn/

rapprochement

Meaning
The establishment or resumption of harmonious relations.
Example
The two countries signed an agreement that marked a new rapprochement.
C1 noun /ˈrʌbəl/

rubble

Meaning
Broken stone, bricks, or debris from a collapsed building or structure.
Example
The rescue team searched through the rubble after the earthquake.
C1 adjective /rɪˈpres.ɪv/

Repressive

Meaning
restraining freedom or preventing self-expression; oppressive
Example
The repressive government banned all forms of protest.
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.
C2 verb /rɪˈdaʊnd/

redound

Meaning
to contribute greatly to a result or consequence, usually beneficial
Example
His hard work will redound to the success of the company.
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.
C1 adjective /raɪf/

rife

Meaning
widespread or common, often in a negative sense
Example
Corruption was rife in the old government system.
B1 adverb /ˈriː.zən.ə.bli/

Reasonably

Meaning
in a sensible way; fairly; to a moderate degree
Example
The hotel room was reasonably priced for the location.
B1 noun /raɪs ˈkʊkər/

Rice cooker

Meaning
an electric appliance designed to cook rice automatically
Example
The rice cooker automatically switches off when the rice is perfectly cooked.
C1 noun rɪˈdʌndənsi

redundancy

Meaning
The state of being not or no longer needed or useful; superfluousness.
Example
The redundancy in the company's workforce led to many layoffs.
C1 verb /ˈrek.ən.saɪl/

reconcile

Meaning
Restore friendly relations between; cause to coexist in harmony.
Example
They tried to reconcile their differences through open communication.
B1 noun /ˈrɛntəl/

rental

Meaning
an arrangement in which something is rented, or the amount paid for renting
Example
The car rental was more expensive than we expected.
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.
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.