| reap | To cut and gather (a crop or harvest) | |
| readily | Without hesitation or reluctance; willingly | |
| raze | Completely destroy a building, town, or other site. | |
| raucous | Making a disturbingly harsh and loud noise | |
| rash | Displaying or proceeding from a lack of careful consideration of the possible consequences of an action | |
| rarefied | Belonging to or reserved for a select group; exclusive | |
| rapt | Completely fascinated or absorbed by what one is seeing or hearing | |
| rapacious | Aggressively greedy or grasping | |
| rankled | To cause irritation or deep bitterness | |
| rancorous | Characterized by bitterness or resentment | |