4 letters
- snug8
- snye7
- sone5
- soup8
- spae7
- span8
- spec10
- sped8
- spew10
- spic10
- spin8
- spud9
- spue8
- spun9
- spur8
- step7
- stun6
- such10
- suck12
- sued6
- suer5
- sues5
- suet5
- sump11
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- sure5
- syce9
- sync10
- syne7
- tens5
- tune6
- tuns6
- tups8
- ukes9
- umps11
- unbe9
- unci9
- unco9
- unde7
- upas8
- upon9
- urns6
- used6
- user5
- uses5
- wens8
- yens7
- yups10