- Spitefully Adv.
- Spivvishly Adv.
- Splashily Adv.
- Splendidly Adv.
- Splenetically Adv.
- Spongily Adv.
- Spontaneously Adv.
- Spookily Adv.
- Spoonily Adv.
- Sporadically Adv.
- Sportily Adv.
- Sportingly Adv.
- Sportively Adv.
- Spot-on Adj. Adv. Inter.
- Spotlessly Adv.
- Spottily Adv.
- Sprightly Adj. Adv.
- Springily Adv.
- Sprucely Adv.
- Spry Adj. Adv.
- Spryly Adv.
- Spumily Adv.
- Spunkily Adv.
- Spuriously Adv.
- Sputteringly Adv.
- Spy-like Adj. Adv.
- Squab Subst. Adj. Adv.
- Squalidly Adv.
- Square Adj. Subst. Verb Adv.
- Squarely Adv.
- Squarewise Adv. Adj.
- Squatly Adv.
- Squeakily Adv.
- Squeaky Adj. Adv.
- Squeamishly Adv.
- Squiffily Adv.
- Squint Subst. Verb Adj. Adv.
- Stably Adv.
- Staccato Adj. Adv. Subst.
- Stagewise Adj. Adv.
- Staggeringly Adv.
- Stagily Adv.
- Stagnantly Adv.
- Staidly Adv.
- Stainlessly Adv.
- Stalely Adv.
- Stalkily Adv.
- Stalwartly Adv.
- Stammeringly Adv.
- Stanchly Adv.
- Standardly Adv.
- Standby Subst. Adj. Adv.
- Standoffishly Adv.
- Star-like Adj. Adv.
- Starboard Adj. Subst. Verb Adv.
- Starchily Adv.
- Staringly Adv.
- Stark Adj. Adv.
- Starkly Adv.
- Startlingly Adv.