4 letters
- slur6
- smug10
- snip8
- snug8
- sore4
- sori4
- soup8
- sour5
- spae7
- spar7
- spec10
- sped8
- spew10
- spic10
- spik11
- spin8
- spit7
- spiv11
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- step7
- stir4
- sued6
- suer5
- sues5
- suet5
- sugh9
- suit5
- sulu7
- sump11
- sung8
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- swig9
- tegs6
- tier4
- ties4
- tips7
- tire4
- trig6
- trip7
- true5
- trug7
- tugs7
- tuis5
- tups8
- ughs9
- ukes9
- ulus7
- umps11
- upas8
- urbs8
- urds6
- urea5
- urge7
- uric8
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- vier8
- vies8
- vigs10
- vise8
- vugs11
- weir7
- wigs9
- wipe10
- wire7
- wise7
- wisp10
- yipe9
- yips9
- yups10
- zigs15
- zips16