| A | B |
| precocious | advanced in development |
| predecessor | former occupant of a post |
| presumptuous | overconfident; impertinently bold; taking liberties |
| prudent | cautious; careful |
| quandary | dilemma |
| rancor | bitterness; hatred |
| rebuttal | refutation; response with contrary evidence |
| recluse | hermit; loner |
| rectify | set right; correct |
| redundant | superfluous; repetitious; excessively wordy |
| refute | disprove |
| relegate | banish to an inferior position; delegate |
| renounce | abandon; disown; repudiate |
| reprehensible | deserving blame |
| reprimand | reprove severely; rebuke |
| reprove | sensure; rebuke |
| repudiate | disown; disavow |
| reticence | reserve; uncommunicativeness; inclination to silence |
| retract | withdraw; take back |
| rhetorical | pertaining to effective communication; insincere in language |