4 letters
- sike8
- silk9
- sims7
- sinh7
- sink9
- sins5
- sips7
- sirs4
- sith6
- sits4
- skas8
- skid9
- skim11
- skin9
- skip11
- skis8
- skit8
- skua9
- sock11
- souk9
- sous5
- spic10
- spik11
- sris4
- subs8
- such10
- suck12
- suds6
- sues5
- sugh9
- suit5
- sulk10
- sums8
- sunk10
- suns6
- sups8
- suqs14
- surf8
- suss5
- this6
- thus7
- tick11
- tics7
- tsks8
- tuck12
- tuis5
- tush7
- tusk9
- ughs9
- ukes9
- unci9
- uric8
- uses5
- wich12
- wick14
- wish9
- wiss7
- wuss8
- yuch12
- yuck14
- yuks11