4 letters
- spic10
- spik11
- spin8
- spit7
- spiv11
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- step7
- stir4
- subs8
- suds6
- sued6
- suer5
- sues5
- suet5
- suit5
- sump11
- sums8
- suns6
- supe8
- sups8
- suqs14
- sura5
- surd6
- sure5
- surf8
- suss5
- tees4
- tier4
- ties4
- tips7
- tire4
- tree4
- trip7
- true5
- tuis5
- tups8
- ukes9
- umps11
- upas8
- urbs8
- urds6
- urea5
- urge7
- uric8
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- veep11
- veer8
- vees8
- vier8
- vies8
- vise8
- weep10
- weer7
- wees7
- weir7
- were7
- wipe10
- wire7
- wise7
- wisp10
- wiss7
- wuss8
- yipe9
- yips9
- yirr6
- yups10
- zees13
- zips16