| Term | Definition |
| 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. |
| resilience | 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's power 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. |