4 letters
- spam10
- spar7
- spas7
- spec10
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- stir4
- stop7
- stum8
- subs8
- such10
- suck12
- suds6
- suer5
- sues5
- suit5
- sulu7
- sumo8
- sump11
- sums8
- suns6
- supe8
- sups8
- suqs14
- sura5
- surd6
- sure5
- surf8
- suss5
- swim10
- swop10
- swum11
- tics7
- tips7
- tiro4
- toms7
- toom7
- topi7
- tops7
- torc7
- tori4
- toro4
- tors4
- toss4
- tour5
- trim7
- trio4
- trip7
- trop7
- tuis5
- tump11
- tups8
- udos6
- ulus7
- umbo11
- umps11
- unci9
- unco9
- upas8
- updo9
- upon9
- urbs8
- urds6
- uric8
- urns6
- ursa5
- urus6
- user5
- uses5
- vims11
- wimp13
- wisp10
- wiss7
- woos7
- wops10
- worm10
- wuss8
- yips9
- your7
- yups10
- zips16
- zoic16
- zoom16
- zoos13
- zori13