| requisite | a thing that is necessary for the achievement of a specified end | |
| resigned | Having accepted something unpleasant that one cannot do anything about | |
| resilient | Able to withstand or recover quickly from difficult conditions | |
| resolute | Admirably purposeful, determined, and unwavering | |
| resonant | Having the ability to evoke or suggest enduring images, memories, or emotions | |
| respite | A short period of rest or relief from something difficult or unpleasant | |
| resplendent | attractive and impressive through being richly colorful or sumptuous | |
| restive | Unable to keep still or silent and becoming increasingly difficult to control, often because of impatience, dissatisfaction, or boredom | |
| reticent | Not revealing one's thoughts or feelings readily | |
| retiring | Shy and fond of being on one's own | |