4 letters
- ruts5
- scam10
- scar7
- scop10
- scot7
- scow10
- scry9
- scud9
- scum11
- scup11
- scut8
- shmo9
- slum9
- slur6
- smog9
- smug10
- smut8
- soar4
- sock11
- soma7
- some7
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- souk9
- soul6
- soup8
- sour5
- sous5
- spur8
- stum8
- such10
- suck12
- suer5
- sumo8
- sump11
- sums8
- sura5
- surd6
- sure5
- surf8
- swum11
- toms7
- torc7
- tors4
- tour5
- udos6
- umbo11
- umps11
- unco9
- urbs8
- urds6
- uric8
- urns6
- ursa5
- urus6
- user5
- worm10
- your7