| A | B |
| swarthy | dark |
| swathe | wrap around;bandage |
| sybarite | lover of luxury |
| sycophant | a flatterer |
| sylvan | pertaining to the woods;rustic |
| symbiosis | a close; beneficial association of two organisms |
| symmetry | balanced arrangement |
| synchronous | working together at the same time |
| synthesis | combining parts into a whole |
| synthetic | artificial |
| tableau | a graphic picture |
| taboo | prohibited act |
| tacit | expressed without words |
| taciturn | silent;talking little |
| tactile | pertaining to the sense of touch |
| taint | to contaminate; corrupt |
| talisman | a charm |
| tally | to add up |
| tangent | touching or a change of course |
| tantalize | lease |
| tantamount | equal |
| tarry | delay |
| taunt | to ridicule |
| taut | tight; ready |
| tawdry | cheap and gaudy |
| tedious | boring; tiring |
| temerity | boldness |
| temper | restrain; toughen |
| temperate | mild or self-controlled |
| temporal | not lasting forever |
| temporize | avoid committing oneself; gain time |
| tenacious | holding fast |
| tenacity | persistency |
| tendentious | biased |
| tenet | doctorine; beliefs |
| tensile | capable of being stretched |
| tentative | temporary; hesitant |
| tenuous | rare; slim |
| tenure | time of holding an office |
| tepid | lukewarm |