4 letters
- rusk9
- rust5
- ruth7
- ruts5
- sail5
- salp8
- sari4
- saul6
- scop10
- scow10
- scup11
- seif7
- self8
- serf7
- shaw9
- shew9
- shim9
- shin7
- ship9
- shit6
- shiv10
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shri6
- shul8
- shun8
- shut7
- sial5
- sift7
- sigh8
- sild6
- silk9
- sill6
- silo5
- silt5
- simp10
- sinh7
- sipe7
- sips7
- sire4
- sirs4
- sith6
- skip11
- slap8
- slaw8
- slew8
- slid6
- slim8
- slip8
- slit5
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snip8
- snow8
- soap7
- soar4
- sofa7
- soft7
- soil5
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- soph9
- sops7
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- sows7
- spar7
- spew10
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- stir4
- stop7
- stow7
- such10
- suer5
- sugh9
- suit5
- sulk10
- sulu7
- sumo8
- sump11
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- swap10
- swig9
- swim10
- swob10
- swop10
- swot7
- swum11
- syli7
- syph11
- thio6
- thir6
- this6
- thou7
- thro6
- thru7
- thus7
- tils5
- tips7
- tirl5
- tiro4
- tofu8
- toil5
- tolu6
- toph9
- topi7
- tops7
- tori4
- tors4
- tosh6
- tour5
- tows7
- trio4
- trip7
- trop7
- trow7
- tuis5
- tups8
- turf8
- tush7
- twos7
- udos6
- ughs9
- ulus7
- umps11
- upas8
- updo9
- upon9
- urbs8
- urds6
- uric8
- urns6
- ursa5
- urus6
- user5
- viol9
- virl9
- vows11
- vrow11
- waif10
- wail8
- wair7
- waps10
- warp10
- wars7
- wash9
- wasp10
- waul9
- waur8
- weir7
- whap12
- whid10