rabid – Affected with rabies or hydrophobia.
racy – Exciting or exhilarating to the mind.
radiance – Brilliant or sparkling luster.
radiate – To extend in all directions, as from a source or focus.
radical – One who holds extreme views or advocates extreme measures.
radix – That from or on which something is developed.
raillery – Good-humored satire.
ramify – To divide or subdivide into branches or subdivisions.
ramose – Branch-like.
rampant – Growing, climbing, or running without check or restraint.
rampart – A bulwark or construction to oppose assault or hostile entry.
rancor – Malice.
rankle – To produce irritation or festering.
rapacious – Disposed to seize by violence or by unlawful or greedy methods.
rapid – Having great speed.
rapine – The act of seizing and carrying off property by superior force, as in war.
rapt – Enraptured.
raptorial – Seizing and devouring living prey.
ration – To provide with a fixed allowance or portion, especially of food.
rationalism – The formation of opinions by relying upon reason alone, independently of authority.
raucous – Harsh.
ravage – To lay waste by pillage, rapine, devouring, or other destructive methods.
ravenous – Furiously voracious or hungry.
ravine – A deep gorge or hollow, especially one worn by a stream or flow of water.
reaction – Tendency towards a former, or opposite state of things, as after reform, revolution, or inflation.
reactionary – Pertaining to, of the nature of, causing, or favoring reaction.
readily – Without objection or reluctance.
readjust – To put in order after disarrangement.
ready – In a state of preparedness for any given purpose or occasion.
realism – The principle and practice of depicting persons and scenes as they are believed really to exist.
rearrange – To arrange again or in a different order.
reassure – To give new confidence.
rebellious – Insubordinate.
rebuff – A peremptory or unexpected rejection of advances or approaches.
rebuild – To build again or anew.
rebut – To oppose by argument or a sufficient answer.
recant – To withdraw formally one’s belief (in something previously believed or maintained).
recapitulate – To repeat again the principal points of.
recapture – To capture again.
recede – To move back or away.
receivable – Capable of being or fit to be received – often money.
receptive – Having the capacity, quality, or ability of receiving, as truths or impressions.
recessive – Having a tendency to go back.
recidivist – A confirmed criminal.
reciprocal – Mutually interchangeable or convertible.
reciprocate – To give and take mutually.
reciprocity – Equal mutual rights and benefits granted and enjoyed.
recitation – The act of reciting or repeating, especially in public and from memory.
reck – To have a care or thought for.
reckless – Foolishly headless of danger.
reclaim – To demand or to obtain the return or restoration of.
recline – To cause to assume a leaning or recumbent attitude or position.
recluse – One who lives in retirement or seclusion.
reclusory – A hermitage.
recognizance – An acknowledgment entered into before a court with condition to do some particular act.
recognize – To recall the identity of (a person or thing).
recoil – To start back as in dismay, loathing, or dread.
recollect – To recall the knowledge of.
reconcilable – Capable of being adjusted or harmonized.
reconnoiter – To make a preliminary examination of for military, surveying, or geological purposes.
reconsider – To review with care, especially with a view to a reversal of previous action.
reconstruct – To rebuild.
recourse – Resort to or application for help in exigency or trouble.
recover – To regain.
recreant – A cowardly or faithless person.
recreate – To refresh after labor.
recrudescence – The state of becoming raw or sore again.
recrudescent – Becoming raw or sore again.
recruit – To enlist men for military or naval service.
rectify – To correct.
rectitude – The quality of being upright in principles and conduct.
recuperate – To recover.
recur – To happen again or repeatedly, especially at regular intervals.
recure – To cure again.
recurrent – Returning from time to time, especially at regular or stated intervals.
redemption – The recovery of what is mortgaged or pledged, by paying the debt.
redolent – Smelling sweet and agreeable.
redolence – Smelling sweet and agreeable.
redoubtable – Formidable.
redound – Rebound.
redress – To set right, as a wrong by compensation or the punishment of the wrong-doer.
reducible – That may be reduced.
redundance – Excess.
redundant – Constituting an excess.
reestablish – To restore.
refer – To direct or send for information or other purpose.
referrer – One who refers.
referable – Ascribable.
referee – An umpire.
refinery – A place where some crude material, as sugar or petroleum, is purified.
reflectible – Capable of being turned back.
reflection – The throwing off or back of light, heat, sound, or any form of energy that travels in waves.
reflector – A mirror, as of metal, for reflecting light, heat, or sound in a particular direction.
reflexible – Capable of being reflected.
reform – Change for the better.
reformer – One who carries out a reform.
refract – To bend or turn from a direct course.
refractory – Not amenable to control.
refragable – Capable of being refuted.
refringency – Power to refract.
refringent – Having the power to refract.
refusal – Denial of what is asked.
refute – To prove to be wrong.
regale – To give unusual pleasure.
regalia – pl. The emblems of royalty.
regality – Royalty.
regenerate – To reproduce.
regent – One who is lawfully deputized to administer the government for the time being in the name of the ruler.
regicide – The killing of a king or sovereign.
regime – Particular conduct or administration of affairs.
regimen – A systematized order or course of living with reference to food, clothing and personal habits.
regiment – A body of soldiers.
regnant – Exercising royal authority in one’s own right.
regress – To return to a former place or condition.
regretful – Feeling, expressive of, or full of regret.
rehabilitate – To restore to a former status, capacity, right rank, or privilege.
reign – To hold and exercise sovereign power.
reimburse – To pay back as an equivalent of what has been expended.
rein – A step attached to the bit for controlling a horse or other draft-animal.
reinstate – To restore to a former state, station, or authority.
reiterate – To say or do again and again.
rejoin – To reunite after separation.
rejuvenate – To restore to youth.
rejuvenescence – A renewal of youth.
relapse – To suffer a return of a disease after partial recovery.
relegate – To send off or consign, as to an obscure position or remote destination.
relent – To yield.
relevant – Bearing upon the matter in hand.
reliance – Dependence.
reliant – Having confidence.
relinquish – To give up using or having.
reliquary – A casket, coffer, or repository in which relics are kept.
relish – To like the taste or savor of.
reluctance – Unwillingness.
reluctant – Unwilling.
remembrance – Recollection.
reminiscence – The calling to mind of incidents within the range of personal knowledge or experience.
reminiscent – Pertaining to the recollection of matters of personal interest.
remiss – Negligent.
remission – Temporary diminution of a disease.
remodel – Reconstruct.
remonstrance – Reproof.
remonstrant – Having the character of a reproof.
remonstrate – To present a verbal or written protest to those who have power to right or prevent a wrong.
remunerate – To pay or pay for.
remuneration – Compensation.
Renaissance – The revival of letters, and then of art, which marks the transition from medieval to modern time.
rendezvous – A prearranged place of meeting.
rendition – Interpretation.
renovate – To restore after deterioration, as a building.
renunciation – An explicit disclaimer of a right or privilege.
reorganize – To change to a more satisfactory form of organization.
reparable – Capable of repair.
reparation – The act of making amends, as for an injury, loss, or wrong.
repartee – A ready, witty, or apt reply.
repeal – To render of no further effect.
repel – To force or keep back in a manner, physically or mentally.
repellent – Having power to force back in a manner, physically or mentally.
repentance – Sorrow for something done or left undone, with desire to make things right by undoing the wrong.
repertory – A place where things are stored or gathered together.
repetition – The act of repeating.
repine – To indulge in fretfulness and faultfinding.
replenish – To fill again, as something that has been emptied.
replete – Full to the uttermost.
replica – A duplicate executed by the artist himself, and regarded, equally with the first, as an original.
repository – A place in which goods are stored.
reprehend – To find fault with.
reprehensible – Censurable.
reprehension – Expression of blame.
repress – To keep under restraint or control.
repressible – Able to be kept under restraint or control.
reprieve – To grant a respite from punishment to.
reprimand – To chide or rebuke for a fault.
reprisal – Any infliction or act by way of retaliation on an enemy.
reprobate – One abandoned to depravity and sin.
reproduce – To make a copy of.
reproduction – The process by which an animal or plant gives rise to another of its kind.
reproof – An expression of disapproval or blame personally addressed to one censured.
repudiate – To refuse to have anything to do with.
repugnance – Thorough dislike.
repugnant – Offensive to taste and feeling.
repulse – The act of beating or driving back, as an attacking or advancing enemy.
repulsive – Grossly offensive.
repute – To hold in general opinion.
requiem – A solemn mass sung for the repose of the souls of the dead.
requisite – Necessary.
requital – Adequate return for good or ill.
requite – To repay either good or evil to, as to a person.
rescind – To make void, as an act, by the enacting authority or a superior authority.
reseat – To place in position of office again.
resemblance – Similarity in quality or form.
resent – To be indignant at, as an injury or insult.
reservoir – A receptacle where a quantity of some material, especially of a liquid or gas, may be kept.
residue – A remainder or surplus after a part has been separated or otherwise treated. r
esilience – The power of springing back to a former position
resilient – Having the quality of springing back to a former position.
resistance – The exertion of opposite effort or effect.
resistant – Offering or tending to produce resistance.
resistive – Having or exercising the power of resistance.
resistless – Powerless.
resonance – The quality of being able to reinforce sound by sympathetic vibrations.
resonance – Able to reinforce sound by sympathetic vibrations.
resonate – To have or produce resonance.
resource – That which is restored to, relied upon, or made available for aid or support.
respite – Interval of rest.
resplendent – Very bright.
respondent – Answering.
restitution – Restoration of anything to the one to whom it properly belongs.
resumption – The act of taking back, or taking again.
resurgent – Surging back or again.
resurrection – A return from death to life
resuscitate – To restore from apparent death.
retaliate – To repay evil with a similar evil.
retch – To make an effort to vomit.
retention – The keeping of a thing within one’spower or possession.
reticence – The quality of habitually keeping silent or being reserved in utterance.
reticent – Habitually keeping silent or being reserved in utterance.
retinue – The body of persons who attend a person of importance in travel or public appearance.
retort – A retaliatory speech.
retouch – To modify the details of.
retrace – To follow backward or toward the place of beginning, as a track or marking.
retract – To recall or take back (something that one has said).
retrench – To cut down or reduce in extent or quantity.
retrieve – To recover something by searching.
retroactive – Operative on, affecting, or having reference to past events, transactions, responsibilities.
retrograde – To cause to deteriorate or to move backward.
retrogression – A going or moving backward or in a reverse direction.
retrospect – A view or contemplation of something past.
retrospective – Looking back on the past.
reunite – To unite or join again, as after separation.
revelation – A disclosing, discovering, or making known of what was before secret, private, or unknown.
revere – To regard with worshipful veneration.
reverent – Humble.
reversion – A return to or toward some former state or condition.
revert – To return, or turn or look back, as toward a former position or the like.
revile – To heap approach or abuse upon.
revisal – Revision.
revise – To examine for the correction of errors, or for the purpose of making changes.
revocation – Repeal.
revoke – To rescind.
rhapsody – Rapt or rapturous utterance.
rhetoric – The art of discourse.
rhetorician – A showy writer or speaker.
ribald – Indulging in or manifesting coarse indecency or obscenity.
riddance – The act or ridding or delivering from something undesirable.
ridicule – Looks or acts expressing amused contempt.
ridiculous – Laughable and contemptible.
rife – Abundant.
righteousness – Rectitude.
rightful – Conformed to a just claim according to established laws or usage.
rigmarole – Nonsense.
rigor – Inflexibility.
rigorous – Uncompromising.
ripplet – A small ripple, as of water.
risible – capable of exciting laughter.
rivulet – A small stream or brook.
robust – Characterized by great strength or power of endurance.
rondo – A musical composition during which the first part or subject is repeated several times.
rookery – A place where crows congregate to breed.
rotary – Turning around its axis, like a wheel, or so constructed as to turn thus.
rotate – To cause to turn on or as on its axis, as a wheel.
rote – Repetition of words or sounds as a means of learning them, with slight attention.
rotund – Round from fullness or plumpness.
rudimentary – Being in an initial, early, or incomplete stage of development.
rue – To regret extremely.
ruffian – A lawless or recklessly brutal fellow.
ruminant – Chewing the cud.
ruminate – To chew over again, as food previously swallowed and regurgitated.
rupture – To separate the parts of by violence.
rustic – Characteristic of dwelling in the country.
ruth – Sorrow for another’s misery.