| A | B |
| ramification | the resulting consequence of a decision |
| recognize | to identify someone or something seen before |
| regulate | to apply a rule |
| retrospect | the remembering of past events |
| rhinoceros | a species of animals with a big horn on the snout |
| rhododendron | a flower with red/pink flowers |
| ridiculous | silly, causing laughter |
| diarrhea | abnormally excessive bowl movement |
| ruby | deep red color and a precious stone of the same color |
| interrupt | to break into a conversation or event |