| A | B |
| ramification | the possible results of an action; consequence |
| rapacious | excessively grasping or covetous; living on prey |
| recalcitrant | unwilling to obey orders; refusing to be controlled |
| recant | to announce in public that your past beliefs were wrong and that you no longer agree with them |
| recrimination | argument between people who are blaming each other: |
| redolent | exuding fragrance; aromatic |
| redundant | unnecessary because it is more than is needed |
| refutable | proved to be false or erroneous |
| relegate | to put someone or something into a lower or less important rank or position |
| relinquish | to give up something such as a responsibility or claim |
| remonstrate | to complain to someone or about something |
| reparation | payment for harm or damage |
| replenish | to fill something up again |
| reprehensible | If someone's behavior is in the wrong |
| requisite | necessary; needed for a particular purpose |
| resolute | determined in character |
| rigorous | severe conditions |
| rudimentary | undeveloped; primitive |