| 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. |