robust
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN English BN Bengali HI Hindi ES Spanish FR French DE German RU Russian ZH Chinese JA Japanese
All Vocabulary Cards All Vocabularies
B2 adjective rəʊˈbʌst

robust

Meaning
Strong and healthy; vigorous; able to withstand or overcome adverse conditions.
Example
The robust infrastructure ensures reliable communication.
C1 adjective /ˈreɪ.si/

racy

Meaning
Lively, entertaining, or slightly shocking (especially in a sexual way).
Example
The novel was full of racy dialogues.
B2 adjective /ˈrɑː.ki/

Rocky

Meaning
full of rocks; unsteady; difficult
Example
The rocky path made hiking difficult for the tourists.
C2 adjective /rɪˈfɛrəbəl/

referable

Meaning
able to be related or directed to something
Example
The issue is referable to the new policy changes.
B1 adjective /ˈrɔɪ.əl/

Royal

Meaning
belonging to or connected with the monarch or monarchy; magnificent; excellent
Example
The royal family attended the ceremony.
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 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.
B2 noun/adjective /rɪˈpʌblɪkən/

republican

Meaning
a member or supporter of a republican political party or system
Example
The republican candidate won the election.
C2 noun /ˈrɛtɪnjuː/

retinue

Meaning
A group of attendants or followers accompanying an important person.
Example
The king entered the hall followed by his retinue.
B1 adjective /roʊˈmæn.tɪk/

Romantic

Meaning
relating to love; idealistic; dreamy
Example
They enjoyed a romantic dinner by candlelight.
A2 verb /rɪˈlæks/

relax

Meaning
to make or become less tense or anxious; to rest
Example
After a long day, she likes to relax with a good book.
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 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.
C1 adjective /rɪˈmiːdiəl/

Remedial

Meaning
intended as a remedy; corrective; providing a cure;
Example
The students need remedial classes to improve their math skills.
C1 noun /ˌrɛmɪˈnɪsəns/

reminiscence

Meaning
a story or memory about past events
Example
He shared a reminiscence of his childhood days in the village.
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.
C2 noun /ˈreɪdɪks/

radix

Meaning
the base or root of something; the number on which a system of numeration is built
Example
In mathematics, the decimal system has a radix of ten.
C1 noun /ˈrɛzɪn/

resin

Meaning
a sticky organic substance, usually secreted by plants, often used in varnishes or plastics
Example
The craftsman used natural resin to make the sculpture shine.
B2 noun rɪˈkruːt.mənt

recruitment

Meaning
The action of finding new people to join an organization or support a cause.
Example
Recruitment strengthens the workforce.
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.
C1 verb /rɪˈkaʊnt/

recount

Meaning
to narrate or tell the details of an event or experience
Example
She recounted her adventures during the summer trip.
C1 noun /ræmˈbuːtən/

Rambutan

Meaning
a tropical fruit with red spiky skin and white translucent sweet flesh similar to litchi
Example
The rambutan looks scary with its hairy skin but tastes very sweet inside.
C1 noun ˈremnənts

remnants

Meaning
A small remaining quantity of something; a surviving trace.
Example
The remnants of the wall are still visible.
B2 verb /ˈrʌm.bəl/

rumble

Meaning
to make a continuous deep, resonant sound
Example
Thunder rumbled in the distance.
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.
C1 adjective /rɪˈɡrɛtfəl/

regretful

Meaning
feeling or showing sadness or disappointment about something that has happened or been done
Example
She gave him a regretful smile as she turned away.
B2 noun /rɛlm/

realm

Meaning
A kingdom or domain; a field or area of activity or interest.
Example
He is well known in the realm of science.
B2 verb /rɪˈsaɪt/

recite

Meaning
To say aloud something learned, especially poetry or text, from memory.
Example
The child recited a poem in front of the class.
C1 verb /ˈrɪdɪkjuːl/

ridicule

Meaning
To make fun of someone or something in a cruel or dismissive way.
Example
He was ridiculed for his strange ideas.
C1 noun, adjective /ˈrɛvərənd/

reverend

Meaning
A title of respect used for members of the clergy; deserving deep respect.
Example
The Reverend gave an inspiring sermon at the church.
B2 verb /rɪˈdʒɔɪs/

rejoice

Meaning
to feel or show great joy; to celebrate
Example
The family rejoices at the good news.
B2 noun /ˌriː.ɪnˈfɔːrs.mənt/

reinforcement

Meaning
Strengthening or supporting something, especially behavior or learning.
Example
Positive reinforcement helps in learning.
B1 adjective /rɪˈkwaɪəd/

required

Meaning
necessary or compulsory
Example
A visa is required to enter the country.
C1 noun /ˌrɛkwɪˈzɪʃən/

requisition

Meaning
An official order laying claim to the use of property or materials; a formal demand or request.
Example
The manager submitted a requisition for new office supplies.
B1 adjective /rɪˈleɪ.tɪd/

Related

Meaning
connected; associated; having a connection or relationship
Example
These two problems are closely related to each other.
C1 noun /rɪˈnaʊn/

Renown

Meaning
the condition of being known or talked about by many people; fame
Example
The scientist achieved international renown for her discoveries.
C1 verb /ˌriːɪmˈbɜːrs/

reimburse

Meaning
to pay back money to someone who has spent it or lost it
Example
The company reimbursed him for travel expenses.
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.
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.
B1 verb /ˌrɛprɪˈzɛnt/

represent

Meaning
to act or speak on behalf of someone or something
Example
He will represent our company at the conference.
B1 adjective /ˈriː.zən.ə.bəl/

Reasonable

Meaning
fair and sensible; not too expensive; logical and practical
Example
The hotel offers reasonable prices for quality accommodation.
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.
B2 noun /rɪˈlʌk.təns/

Reluctance

Meaning
unwillingness to do something; hesitation
Example
He showed reluctance to accept the job offer.
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.
C1 verb /reɪv/

rave

Meaning
to speak or write about something with great enthusiasm or admiration
Example
Critics rave about the new movie.
C2 noun /ˈrɛdʒɪsaɪd/

regicide

Meaning
the act of killing a king
Example
The conspirators were executed for committing regicide.
B2 adjective /rɪˈɡret.ə.bəl/

Regrettable

Meaning
causing or deserving regret; unfortunate; deplorable
Example
It is regrettable that so many talented people left the company.
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.
C2 adjective /ˈrævənɪŋ/

ravening

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

respiration

Meaning
The process of breathing or the exchange of gases in living organisms.
Example
Respiration is essential for all living beings.
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.
A2 noun /ruːf/

roof

Meaning
the top covering of a building or vehicle
Example
The roof of the house needs to be repaired.
B2 verb /reɪd/

raid

Meaning
to attack suddenly; to search and seize
Example
Police raid the illegal gambling house.
B2 noun /ˌreɡ.jʊˈleɪ.ʃənz/

regulations

Meaning
Rules or directives made and maintained by an authority.
Example
Strict regulations ensure fair practices.
C1 verb /rɪˈvɜːrbəreɪt/

reverberate

Meaning
To echo repeatedly or have continuing effects.
Example
The sound of the explosion reverberated through the valley.
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.
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 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.
C2 noun /ˈrɒndoʊ/

rondo

Meaning
a musical composition with a recurring leading theme
Example
The pianist ended the recital with a lively rondo.
A1 noun /reɪn/

Rain

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

reiterate

Meaning
To say something again or repeatedly for emphasis or clarity.
Example
The teacher reiterated the importance of honesty.
B2 verb /rɪˈzɜːv/

reserve

Meaning
to keep something for future use; to book in advance
Example
I want to reserve a table for dinner.
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.
C1 noun /ˈruː.bi/

Ruby

Meaning
a precious red gemstone; a deep red variety of corundum
Example
The ruby ring was her most treasured possession.
C1 adjective /rɪˈsɛptɪv/

receptive

Meaning
Willing to listen to or accept new ideas, suggestions, or experiences.
Example
She was receptive to feedback from her colleagues.
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 adjective /rɪˈstrɪk.tɪd/

Restricted

Meaning
limited or controlled; subject to restrictions
Example
Access to this area is restricted to authorized personnel only.
B2 noun ˈrɛvənuː

revenue

Meaning
Income, especially when of a company or organization.
Example
The company's revenue grew by 10% this year.
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.
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.
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.
C1 noun /ˈraɪtʃəsnəs/

righteousness

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

registration

Meaning
the action or process of enrolling or signing up for something
Example
The registration for the event will close tomorrow.
C1 verb /rɪˈkuːpəreɪt/

recuperate

Meaning
to recover from illness or regain strength
Example
She went to the countryside to recuperate after surgery.
C1 adjective ˈriːdʒən spəˈsɪfɪk

region-specific

Meaning
Relating to or characteristic of a particular region or area.
Example
Climate change impacts are region-specific.
A2 verb /ˌrɛkəˈmɛnd/

recommend

Meaning
to suggest or advise something as being good or suitable
Example
I recommend trying the new restaurant downtown.
C2 verb /rɛnd/

rend

Meaning
to tear something apart violently or forcefully
Example
The explosion rent the air with a deafening noise.
C1 verb /rɪɡ/

rig

Meaning
to manipulate or control something dishonestly; to set up equipment
Example
The election was rigged by corrupt officials.
C1 adjective rɪˈlɛntləs

relentless

Meaning
Oppressively constant; incessant; showing no abatement of severity, intensity, strength, or pace.
Example
The freedom fighters' relentless struggle led to victory.
C1 noun ˈrəʊvə

rover

Meaning
A vehicle for driving over rough terrain, especially one driven by remote control over extraterrestrial terrain.
Example
The rover landed on Mars to begin its exploration.
B2 noun ˌriːfɔːˈreɪʃən

reforestation

Meaning
The natural or intentional restocking of existing forests and woodlands that have been depleted.
Example
Reforestation efforts are crucial to restoring ecosystems.
C2 adjective /ˈruːbɪkənd/

rubicund

Meaning
Having a healthy reddish complexion.
Example
The old man’s rubicund face showed he was in good health.
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 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 noun /ˈræmpɑːrt/

rampart

Meaning
a defensive wall of a castle or fort
Example
The soldiers stood on the rampart, watching the enemy approach.
C1 verb /rɪˈvɪər/

revere

Meaning
To deeply respect or admire someone or something.
Example
The students revered their teacher for his wisdom.
C1 verb /ˌriːˈkæl.ɪ.breɪt/

recalibrate

Meaning
To calibrate again or differently; to adjust or correct something based on new information or changed circumstances.
Example
The company had to recalibrate its strategies to adapt to the market.
C2 verb /rɪˈkwaɪt/

requite

Meaning
to return or repay a favor, service, or feeling
Example
She requited his kindness with a thoughtful gift.
C2 noun /ruːθ/

ruth

Meaning
A feeling of pity, compassion, or sorrow.
Example
He felt no ruth for the people he had betrayed.
C2 adjective /ˈrɛkriənt/

recreant

Meaning
cowardly or unfaithful to duty
Example
The recreant soldier abandoned his post in fear.
C2 noun /ˌræʃioʊsɪˈneɪʃən/

ratiocination

Meaning
the process of reasoning or logical thinking
Example
His ratiocination impressed the judges during the debate.
B2 verb /rɪˈteɪn/

retain

Meaning
to keep possession of something
Example
The company decided to retain its experienced employees.
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.
A2 noun /reɪt/

rate

Meaning
the cost or price of something, or the amount at which something happens
Example
The rate of inflation is increasing every year.
B1 verb /rɪˈfɜː/

refer

Meaning
to mention or allude to something; to direct someone to a source of information
Example
Please refer to page 45 for more details.
C1 adjective /ˈrɪkɪti/

rickety

Meaning
Poorly made and likely to collapse; shaky.
Example
They crossed a rickety wooden bridge over the river.
C1 verb /rɪˈbʌf/

rebuff

Meaning
to reject or refuse in a sharp or abrupt way
Example
She rebuffed his invitation to dinner.
B2 noun /raɪˈnɒs.ər.əs/

Rhinoceros

Meaning
a large, heavy animal with thick skin and one or two horns on its nose
Example
The rhinoceros charged through the grassland.
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.
C1 noun /rɪdʒ/

ridge

Meaning
a long, narrow hilltop, mountain range, or raised strip
Example
We walked along the mountain ridge.
C1 noun ˈrez.ɪ.djuː

residue

Meaning
A small amount of something that remains after the main part has gone or been removed.
Example
Soap residue affects appliance efficiency.
A1 noun /ˈrɛst(ə)rɒnt/

restaurant

Meaning
a place where meals are prepared and served to customers
Example
We went to the restaurant for dinner.
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 /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 /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.
B1 noun raɪts

rights

Meaning
A moral or legal entitlement to have or obtain something or to act in a certain way.
Example
The rights of people were prioritized.
B2 noun /rɪˈzembləns/

Resemblance

Meaning
the state of being alike or similar; similarity in appearance or character
Example
There's a strong resemblance between the two sisters.
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.
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.
C2 noun /ˈrɛk.tɪ.tjuːd/

rectitude

Meaning
Morally correct behavior or thinking; righteousness and integrity.
Example
His rectitude earned him respect in society.
C1 adverb /ˈrɪdʒɪdli/

Rigidly

Meaning
in a strict, inflexible manner; without compromise
Example
The rules are rigidly enforced in this institution.
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.
A2 adjective /ˈriː.sənt/

Recent

Meaning
happening not long ago; new; current;
Example
The recent changes in weather patterns concern scientists.
B2 noun rɪˈzentmənt

resentment

Meaning
Bitter indignation at having been treated unfairly.
Example
Resentment grew among the students.
C1 noun /rʌk/

Ruck

Meaning
a situation where a crowd of people are pushing against each other; a disorderly crowd
Example
There was a ruck at the football match.
C1 noun /ˈreɪ.vən/

Raven

Meaning
a large, black bird with a thick bill and harsh croaking voice
Example
The raven perched on the old oak tree and cawed loudly.
C1 verb /ˈrævɪdʒ/

ravage

Meaning
to cause severe and extensive damage or destruction
Example
The hurricane ravaged the coastal villages.
C2 verb /ˌriː.kəˈpɪtʃ.ə.leɪt/

recapitulate

Meaning
To summarize and state again the main points of something.
Example
The teacher asked the student to recapitulate the lesson.
C1 verb /ˌriːəˈdʒʌst/

readjust

Meaning
To change or move something again in order to achieve a better fit, condition, or balance.
Example
He readjusted the chair to make it more comfortable.
C1 verb rɪˈpel

repel

Meaning
To push away or force apart due to similar charges or properties.
Example
Protons repel each other.
B1 verb /rɪˈliːs/

release

Meaning
to set free; to allow something to escape or go away
Example
The prisoner was released after ten years.