| ECLIPSISES | • ECLIPSIS n. a figure of syntax. |
| SIDESPLITS | • sidesplits n. Plural of sidesplit. • side-splits n. Plural of side-split. • SIDESPLIT n. a split-level house having floors raised half a level on one side thus having an upper and lower basement and an upper and lower main floor. |
| SIMPLISTES | • SIMPLISTE n. (French) someone who tends to oversimplify. |
| SINGSPIELS | • singspiels n. Plural of singspiel. • SINGSPIEL n. (German) a semi-dramatic play in dialogue and song. |
| SLIMPSIEST | • slimpsiest adj. Superlative form of slimpsy: most slimpsy. • SLIMPSY adj. flimsy, also SLIMSY. |
| SLIPPINESS | • slippiness n. The state or condition of being slippy. • SLIPPINESS n. the state of being slippy. |
| SOLIPSISMS | • solipsisms n. Plural of solipsism. • SOLIPSISM n. a theory holding that the self can know nothing but its own modifications and that the self is the only existent thing. |
| SOLIPSISTS | • solipsists n. Plural of solipsist. • SOLIPSIST n. one who practises solipsism, the belief that the self is all that exists. |
| SPILOSITES | • spilosites n. Plural of spilosite. • SPILOSITE n. a spotted slate, formed by contact metamorphism. |
| SPIRALISMS | • SPIRALISM n. advancement through a spirally structured career. |
| SPIRALISTS | • spiralists n. Plural of spiralist. • SPIRALIST n. someone engaged in spiralism; loosely, an ambitious person. |
| SPIRITLESS | • spiritless adj. Lacking energy, drive, motivation or emotion. Enervated. • SPIRITLESS adj. lacking animation or courage. |
| SPLITTISMS | • SPLITTISM n. advocating the withdrawal of a group from a large centralized body. |
| SPLITTISTS | • splittists n. Plural of splittist. • SPLITTIST n. one advocating the withdrawal of a group from a large centralized body. |
| SPRITSAILS | • spritsails n. Plural of spritsail. • SPRITSAIL n. a sail extended by a sprit. |
| SYPHILISES | • syphilises v. Third-person singular simple present indicative form of syphilise. • SYPHILIS n. a venereal disease, also SYPH. |