4 letters
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- souk9
- soul6
- soup8
- sour5
- sous5
- spam10
- spar7
- sped8
- spot7
- spry9
- spud9
- spue8
- spun9
- spur8
- stop7
- stud6
- stum8
- sudd7
- suds6
- sued6
- suer5
- sumo8
- sump11
- sums8
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- swop10
- swum11
- tods5
- toms7
- toom7
- tops7
- toro4
- torr4
- tors4
- tour5
- trod5
- trop7
- tump11
- tups8
- turd6
- udos6
- umbo11
- umps11
- undo7
- upas8
- updo9
- upon9
- urbs8
- urds6
- urns6
- ursa5
- urus6
- used6
- user5
- wood8
- woos7
- wops10
- word8
- worm10
- yods7
- your7
- yups10
- zoom16
- zoos13