| risible | Such as to provoke laughter; causing laughter; laughable | |
| risque | Slightly indecent or liable to shock, especially by being sexually suggestive | |
| robust | Strong and healthy; vigorous | |
| rotund | Rounded and plump | |
| row | A series of people or things arranged in a straight line | |
| ruminate | To think deeply about something; to meditate or ponder | |
| saccharine | Excessively sweet or sentimental | |
| sacrosanct | regarded as too important or valuable to be interfered with | |
| salacious | Having or conveying undue or inappropriate interest in sexual matters | |
| salient | Most noticeable or important | |