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