| PASTELISTS | • pastelists n. Plural of pastelist. • PASTELIST n. an artist who works in pastel, also PASTELLIST. |
| POLITESSES | • politesses n. Plural of politesse. • POLITESSE n. (French) courteous formality, politeness. |
| POSSIBLEST | • possiblest adj. (Nonstandard) superlative form of possible: most possible. • POSSIBLE adj. that can be done. |
| SCULPTRESS | • sculptress n. (Dated) A female sculptor. • SCULPTRESS n. a woman who is a sculptor. |
| 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. |
| SLEEPSUITS | • sleepsuits n. Plural of sleepsuit. • SLEEPSUIT n. a baby's all-in-one garment for sleeping in. |
| SLIMPSIEST | • slimpsiest adj. Superlative form of slimpsy: most slimpsy. • SLIMPSY adj. flimsy, also SLIMSY. |
| SLIPSHEETS | • slipsheets n. Plural of slipsheet. • slip␣sheets n. Plural of slip sheet. • SLIPSHEET n. a sheet of paper that is interleaved between freshly pressed sheets. |
| SPILOSITES | • spilosites n. Plural of spilosite. • SPILOSITE n. a spotted slate, formed by contact metamorphism. |
| SPIRITLESS | • spiritless adj. Lacking energy, drive, motivation or emotion. Enervated. • SPIRITLESS adj. lacking animation or courage. |
| SPLASHIEST | • splashiest adj. Superlative form of splashy: most splashy. • SPLASHY adj. given to splashing. |
| SPOTLESSLY | • spotlessly adv. In a spotless manner. • SPOTLESS adv. perfectly clean. |
| STEPSTOOLS | • stepstools n. Plural of stepstool. • step␣stools n. Plural of step stool. • STEPSTOOL n. a stool able to be used as a step. |
| STRIPELESS | • stripeless adj. Without stripes. • STRIPELESS adj. without a stripe. |
| STYLOPISES | • STYLOPISE v. to paralyse a host, also STYLOPIZE. |
| SUPERSALTS | • supersalts n. Plural of supersalt. • SUPERSALT n. an acid salt. |