4 letters
- sire4
- sirs4
- skim11
- skin9
- slim8
- slug8
- slum9
- slur6
- smit7
- smog9
- smug10
- smut8
- snag7
- snib8
- snip8
- snit5
- snog7
- snub9
- snug8
- song7
- sori4
- sorn5
- sour5
- spic10
- spin8
- spun9
- spur8
- sris4
- stir4
- stum8
- stun6
- such10
- suck12
- suer5
- sugh9
- suit5
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- surd6
- sure5
- surf8
- swig9
- swim10
- swum11
- sync10
- tics7
- ting7
- tins5
- trig6
- trim7
- trug7
- tugs7
- tuis5
- tung8
- tuns6
- turn6
- ughs9
- umps11
- unai6
- unci9
- unco9
- unit6
- urbs8
- urds6
- urge7
- uric8
- urns6
- ursa5
- urus6
- user5
- vigs10
- vims11
- vugs11
- wigs9
- wing10
- wins8
- yins7
- zigs15
- zinc17
- zing16
- zins14