4 letters
- shut7
- sinh7
- slob8
- slub9
- slur6
- snib8
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- soar4
- sobs7
- sock11
- sone5
- song7
- sons5
- soon5
- soph9
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- spun9
- spur8
- stob7
- stub8
- stun6
- suba8
- subs8
- such10
- suck12
- suer5
- sugh9
- sumo8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- surd6
- sure5
- surf8
- swob10
- sybo9
- sync10
- thou7
- thro6
- thru7
- thus7
- tons5
- torc7
- torn5
- tors4
- tosh6
- tour5
- tubs8
- tuns6
- turn6
- tush7
- udos6
- ughs9
- umbo11
- unbe9
- unci9
- unco9
- undo7
- unto6
- upon9
- urbs8
- urds6
- uric8
- urns6
- ursa5
- urus6
- user5
- wons8
- worn8
- yobs9
- your7
- yuch12