4 letters
- shul8
- sial5
- sild6
- silk9
- sill6
- silo5
- silt5
- simp10
- sipe7
- sips7
- skip11
- slap8
- slid6
- slim8
- slip8
- slit5
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snip8
- soap7
- soil5
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- soph9
- sops7
- sori4
- souk9
- soul6
- soup8
- sour5
- sous5
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spud9
- spue8
- spun9
- spur8
- stop7
- suit5
- sulk10
- sulu7
- sumo8
- sump11
- supe8
- sups8
- swop10
- syli7
- tils5
- tips7
- toil5
- tolu6
- topi7
- tops7
- tuis5
- tups8
- udos6
- ulus7
- umps11
- upas8
- updo9
- upon9
- viol9
- wisp10
- wops10
- yips9
- yups10
- zips16