4 letters
- slob8
- slop8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snap8
- snub9
- soap7
- sobs7
- sola5
- sols5
- soph9
- sops7
- soul6
- soup8
- sous5
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spud9
- spue8
- spun9
- spur8
- stab7
- stub8
- suba8
- subs8
- such10
- suds6
- sues5
- sugh9
- sulk10
- sulu7
- sump11
- sums8
- suns6
- supe8
- sups8
- suqs14
- sura5
- suss5
- swab10
- swap10
- syph11
- tabs7
- tabu8
- tall6
- taps7
- tass4
- taus5
- thus7
- tuba8
- tubs8
- tups8
- tush7
- ughs9
- ulan7
- ulna7
- ulus7
- ulva10
- umps11
- upas8
- upby13
- urbs8
- ursa5
- uses5
- utas5
- vaus9
- wabs10
- wall9
- waps10
- wash9
- wasp10
- waul9
- whap12
- wuss8
- yaps9
- yaup10
- yups10
- zaps16