4 letters
- outs5
- ovum12
- owls8
- plum12
- plus9
- poll9
- pols8
- poms10
- pull10
- puls9
- rocs7
- roll6
- roms7
- rums8
- sall6
- saul6
- scam10
- scop10
- scot7
- scow10
- scud9
- scum11
- scup11
- scut8
- sell6
- shmo9
- shul8
- sill6
- silo5
- slam8
- slim8
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- smog9
- smug10
- smut8
- sock11
- soil5
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- soma7
- some7
- souk9
- soul6
- soup8
- sour5
- sous5
- stum8
- such10
- suck12
- sulk10
- sulu7
- sumo8
- sump11
- sums8
- swum11
- toll6
- tolu6
- toms7
- udos6
- ulus7
- umbo11
- umps11
- unco9