4 letters
- rump11
- rums8
- rune6
- rung8
- runs6
- runt6
- ruse5
- rush7
- rusk9
- rust5
- ruts5
- sags6
- sail5
- sain5
- salp8
- sals5
- sang7
- sans5
- saps7
- sari4
- saul6
- scup11
- segs6
- seis4
- sels5
- sers4
- shin7
- ship9
- shri6
- shul8
- shun8
- sial5
- sibs7
- sics7
- sigh8
- sign7
- sild6
- silk9
- sill6
- silo5
- silt5
- simp10
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sire4
- sirs4
- sits4
- skin9
- skip11
- skis8
- slag7
- slap8
- slid6
- slim8
- slip8
- slit5
- slog7
- slop8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- smug10
- snag7
- snap8
- snib8
- snip8
- snit5
- snog7
- snub9
- snug8
- soil5
- soli5
- sols5
- song7
- sons5
- sops7
- sori4
- sorn5
- soul6
- soup8
- sour5
- sous5
- span8
- spar7
- spas7
- spic10
- spik11
- spin8
- spit7
- spiv11
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- stir4
- stun6
- subs8
- suds6
- suer5
- sues5
- sugh9
- suit5
- sulk10
- sulu7
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- suqs14
- sura5
- surd6
- sure5
- surf8
- suss5
- swig9
- syli7
- tils5
- ting7
- tins5
- tips7
- tirl5
- trig6
- trip7
- trug7
- tugs7
- tuis5
- tung8
- tuns6
- tups8
- turn6
- ughs9
- ugly10
- ulan7
- ulna7
- ulus7
- umps11
- unai6
- unci9
- unit6
- upas8
- upon9
- urbs8
- urds6
- urge7
- uric8
- urns6
- ursa5
- urus6
- user5
- uses5
- vigs10
- virl9
- vugs11
- wigs9
- wing10
- wins8
- wisp10
- wiss7
- wuss8
- yins7
- yips9
- yups10
- zigs15
- zing16
- zins14
- zips16