- Sinuously Adv
- Sinusoidally Adv
- Sisterly Adj Adv
- Sithence Adv Conj Prep
- Situationally Adv
- Sixfold Adj Adv
- Sixthly Adv
- Sixtieth Adj Noun Adv Num
- Sizably Adv
- Sizeably Adv
- Skeletally Adv
- Skeptically Adv
- Sketchily Adv
- Skew Verb Noun Adj Adv
- Skilfully Adv
- Skillfully Adv
- Skimpily Adv
- Skippingly Adv
- Skittishly Adv
- Skulkingly Adv
- Sky-high Adj Adv
- Skyward Adj Adv
- Slack Adj Noun Verb Adv
- Slackly Adv
- Slanderously Adv
- Slangily Adv
- Slant Noun Verb Adj Adv
- Slantingly Adv
- Slantwise Adj Adv
- Slap Noun Verb Adv Adj Inter
- Slapdash Adj Adv
- Slashingly Adv
- Slatternly Adj Adv
- Slavishly Adv
- Sleazily Adv
- Sleekly Adv
- Sleepily Adv
- Sleeplessly Adv
- Slenderly Adv
- Slick Adj Noun Verb Adv Adv
- Slickly Adv
- Slightingly Adv
- Slightly Adv
- Slily Adv
- Slimily Adv
- Slimly Adv
- Slinkily Adv
- Slippy Adj Adv
- Sloppily Adv
- Slothfully Adv
- Slouchingly Adv
- Slovenly Adj Adv
- Slow Adj Verb Adv Noun Noun
- Slower Noun Adj Adv
- Slowly Adv
- Sluggardly Adj Adv
- Sluggishly Adv
- Slumberously Adv
- Slushily Adv
- Sluttishly Adv