4 letters
- simp10
- slum9
- slur6
- smug10
- smut8
- soup8
- sour5
- spam10
- spar7
- spay9
- spec10
- spic10
- spry9
- spud9
- spue8
- spun9
- spur8
- stum8
- such10
- suck12
- suer5
- sumo8
- sump11
- sums8
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- swum11
- syce9
- sync10
- syph11
- tump11
- tups8
- umps11
- upas8
- upby13
- urbs8
- urds6
- uric8
- urns6
- ursa5
- urus6
- user5
- yams9
- yaps9
- yaup10
- yips9
- your7
- yuca10
- yuch12
- yuck14
- yuks11
- yups10
- yurt7