| A | B |
| Raze | To destroy |
| Rebuff | To refuse in a rude or sharp way |
| Recalcitrant | Unmanageably resistant |
| Recluse | A person who lives alone, away from others |
| Redundant | Wordy; Lavish; Overflowing |
| Refurbish | To make like new |
| Rejuvenate | to make young or fresh again |
| Relegate | To assign; To banish |
| Relic | A thing or part that remains from the past |
| Remorse | A deep feeling of sorrow or guilt over a wrong one has done |
| Repudiate | To reject; To divorce or discard |
| Repugnant | Disgusting; Loathsome; Incompatible; Objectionable |
| Rescind | To repeal |
| Residual | Left over; remaining |
| Resilient | Springing back into shape or position |
| Respite | Interval of rest |
| Reticent | not saying much, especially about one's thoughts |
| Retract | To draw back or draw in |
| Ruthless | Merciless; cruel; heartless |
| Sagacious | Very wise or shrewd |
| Salutary | Useful or helpful; Remedial; Healthful |
| Sanction | Authorized approval or permission |
| Saturate | To fill completely |
| Savory | Pleasing to the taste or smell; Pleasant |
| Scapegoat | One taking the blame for the mistakes and crimes of others |
| Scoff | To mock or jeer at; To make fun of |
| Scrupulous | Careful about details; Exact |
| Scrutinize | To inspect carefully |
| Sectarian | Narrow-minded |
| Sequester | To confiscate; To segregate; To draw into seclusion |
| Serene | Unruffled; Tranquil; Unclouded |
| Skeptical | Not easily persuaded or convinced |
| Sobriety | Seriousness, Gravity, Solemnity; Absence of alcoholic intoxication |
| Solemn | Formal; Serious or earnest; Arousing feelings of awe; Very impressive |
| Soporific | Causing sleep |
| Sporadic | Occuring at irregular intervals; Isolated |
| Spurious | Lacking authenticity; counterfeit; false |
| Squalid | Morally repulsive; Sordid |
| Stagnate | To lie inactive; To fail to progress or develope |
| Stoic | Impassive; Indifferent to or unaffected by pleasure or pain |
| Stringent | Severe; Strict |
| Stultifying | Rendering useless or ineffectual; Causing to appear stupid or ridiculous |
| Subtantiate | To verify |
| Succinct | Concise; Terse; Cleary expressed in few words |
| Sullen | Silent and keeping to oneself because one feels angry, bitter, or hurt; resentful; morose; sulky |
| Sumptuous | Lavish; Costly |
| Supercilious | Proud and scornful; Haughty |
| Superficial | Hasty; of or near the surface |
| Superfluous | Beyond what is required or sufficient; Extra |
| Surmise | To imagine or infer on slight grounds |