| Term | Definition |
| quash | subdue; crush; squash |
| quay | dock; landing place |
| queasy | easily nauseated; squeamish |
| quell | extinguish; put down; quiet |
| quench | douse or extinguish; assuage or satisfy |
| querulous | fretful; whining |
| query | inquiry; question |
| queue | line |
| quibble | minor objection or complaint |
| quiescent | at rest; dormant; temporarily inactive |
| quietude | tranquility |
| quintessence | purest and highest embodiment |
| quip | taunt |
| quirk | startling twist; caprice |
| quisling | traitor who aids invaders |
| quiver | case for arrows (n) |
| quiver | tremble; shake (v) |
| quixotic | idealistic but impractical |
| quizzical | teasing; bantering; mocking; curious |
| quorum | number of members necessary to conduct a meeting |
| quotidian | daily; commonplace; customary |
| rabid | like a fanatic; furious |
| raconteur | story-teller |
| ragamuffin | person wearing tattered clothes |
| rail | scold; rant |
| raiment | clothing |
| rakish | stylish; sporty |
| rally | call up or summon (forces, vital powers, etc.); revive or recuperate |
| ramble | wander aimlessly (physically or mentally) |
| ramification | branching out; subdivision |
| ramify | divide into branches or subdivisions |
| ramp | slope; inclined plane |
| rampant | growing in profusion; unrestrained |
| rampart | defensive mound of earth |
| ramshackle | rickety; falling apart |
| rancid | having the odor of stale fat |
| rancor | bitterness; hatred |
| random | without definite purpose, plan, or aim; haphazard |
| rankle | irritate; fester |
| rant | rave; talk excitedly; scold; make a grandiloquent speech |
| rapacious | excessively grasping; plundering |
| rapport | emotional closeness; harmony |
| rapt | absorbed; enchanted |
| rarefied | made less dense (of a gas) |
| raspy | grating; harsh |
| ratify | approve formally; confirm; verify |
| ratiocination | reasoning; act of drawing conclusions from premises |
| rationale | fundamental reason or justification; grounds for an action |
| rationalize | give a plausible reason for an action in place of a true, less admirable one; offer an excuse |
| raucous | harsh and shrill; disorderly and boisterous |
| ravage | plunder; despoil |
| rave | overwhelmingly favorable review |
| ravel | fall apart into tangles; unravel or untwist; entangle |
| ravenous | extremely hungry |
| ravine | narrow valley with step sides |
| raze | destroy completely |
| reactionary | opposing progress; politcally ultraconservative |
| realm | kingdom; field or sphere |
| reaper | one who harvests grain |
| rebate | discount |
| rebuff | snub; beat back |
| rebuke | scold harshly; criticize severely |
| rebus | puzzle in which pictures stand for words |
| rebuttal | refutation; response with contrary evidence |
| recalcitrant | obstinately stubborn; determined to resist authority; unruly |
| recant | disclaim or disavow; retract a previous statement; openly confess error |
| recapitulate | summarize |
| recast | reconstruct (a sentence, story, etc.); fashion again |
| receptive | quick or willing to receive ideas, suggestions, etc. |
| recession | withdrawal; retreat; time of low economic activity |
| recidivism | habitual return to crime |
| recipient | receiver |
| reciprocal | mutual; exchangeable; interacting |
| reciprocate | repay in kind |
| recluse | hermit; loner |
| reconcile | correct inconsistencies; become friendly after a quarrel |
| recondite | abstruse; profound; secret |
| reconnaissance | survey of enemy by soldiers; reconnoitering |
| recount | narrate or tell; count over again |
| recourse | resorting to help when in trouble |
| recrimination | countercharges |
| rectify | set right; correct |
| rectitude | uprightness; moral virtue; correctness of judgment |
| recumbent | reclining; lying down completely or in part |
| recuperate | recover |
| recurrent | occurring again and again |
| redolent | fragrant; odorous; suggestive of an odor |
| redoubtable | formidable; causing fear |
| redress | remedy; compensation |
| redundant | superfluous; repetitious; excessively wordy |
| reek | emit (odor) |
| refectory | dining hall |
| refraction | bending of a ray of light |
| refractory | stubborn; unmanageable |
| refrain | abstain from; resist |
| refulgent | brightly shining; gleaming |
| refurbish | renovate; make bright by polishing |
| refute | disprove |
| regal | royal |
| regale | entertain |
| regatta | boat or yacht race |
| regeneration | spiritual rebirth |
| regicide | murder of a king or queen |
| regime | method or system of government |
| regimen | prescribed diet and habits |
| rehabilitate | restore to proper condition |
| reimburse | repay |
| reiterate | repeat |
| rejoinder | retort; comeback; reply |
| rejuvenate | make young again |
| relegate | banish to an inferior position; delegate; assign |
| relent | give in |
| relevant | pertinent; referring to the case in hand |
| relic | surviving remnant; memento |
| relinquish | give up something with reluctance; yield |
| relish | savor; enjoy |
| remediable | reparable |
| reminiscence | recollection |
| remiss | negligent |
| remission | temporary moderation of disease symptoms; cancellation of a debt; forgiveness or pardon |
| remnant | remainder |
| remonstrance | protest; objection |
| remorse | guilt; self-reproach |
| remunerative | compensating; rewarding |
| rend | split; tear apart |
| render | deliver; provide; represent |
| rendezvous | meeting place |
| rendition | translation; artistic interpretation of a song, etc. |
| renegade | deserter; traitor |
| renege | deny; go back on |
| renounce | abandon; disown; repudiate |
| renovate | restore to good condition; renew |
| renown | fame |
| rent | rip; split |
| reparable | capable of being repaired |
| reparation | amends; compensation |
| repartee | clever reply |
| repast | meal; feast; banquet |
| repeal | revoke; annul |
| repel | drive away; disgust |
| repellent | driving away; unattractive |
| repercussion | rebound; reverberation; reaction |
| repertoire | list of works of music, drama, etc., a performer is prepared to present |
| repine | fret; complain |
| replenish | fill up again |
| replete | filled to the brim or to the point of being stuffed; abundantly supplied |
| replica | copy |
| replicate | reproduce; duplicate |
| repository | storehouse |
| reprehensible | deserving blame |
| repress | restrain; crush; oppress |
| reprieve | temporary stay |
| reprimand | strong rebuke; formal reproof; scolding |
| reprisal | retaliation |
| reprise | musical repetition; repeat performance; recurrent action |
| reproach | express disapproval or disappointment |
| reprobate | person hardened in sin, devoid of a sense of decency |
| reprobation | severe disapproval |
| reprove | censure; rebuke |
| repudiate | disown; disavow |
| repugnance | loathing |
| repulsion | distaste; act of driving back |
| reputable | respectable |
| reputed | supposed |
| requiem | mass for the dead; dirge |
| requisite | necessary requirement |
| requite | repay; revenge |