| A | B |
|---|
| Slothful | lazy; indolent |
| Slovenly | messy; slob-like |
| Somber | dark; dull; gloomy |
| Soporific | sleep-inducing |
| Sparse | thinly spread or distributed; not crowded |
| Stagnant | not moving or flowing; staying in one place |
| stagnate | to become stagnant; to fail to grow or improve |
| Static | having no motion; at rest; stationary; unchanging |
| steadfast | fixed or unchanging |
| Stolid | showing little emotion or pain |
| Submission | the act of yielding to the authority of others |
| Submissive | yielding; meek; docile |
| Subvert | to overthrow or undermine the power of |
| succulent | juicy |
| summon | to call forth |
| Supercilious | haughty; conceited; disdainful |
| Superfluous | extra; beyond what is necessary |
| Superlative | of the highest order; surpassing all others |
| Surreptitious | done in a quiet, sneaky, stealthy way; clandestine |
| Swindle | to cheat or defraud |
| Synthetic | not real or natural; man-made; fabricated |
| Sycophant | a servile person who tries to win favor with another; an apple-polisher |
