4 letters
- sins5
- skid9
- skin9
- slag7
- sled6
- slid6
- slim8
- slip8
- slit5
- slog7
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- smug10
- snag7
- sned6
- snib8
- snip8
- snit5
- snog7
- snub9
- snug8
- soil5
- sold6
- soli5
- song7
- soul6
- spin8
- spud9
- spun9
- stud6
- stun6
- sudd7
- suds6
- sued6
- sugh9
- suit5
- sulk10
- sulu7
- sung8
- sunk10
- sunn7
- suns6
- surd6
- surf8
- swig9
- syli7
- tils5
- ting7
- tins5
- tugs7
- tuis5
- tung8
- tuns6
- udos6
- ughs9
- ugly10
- ulan7
- ulna7
- ulus7
- unai6
- unci9
- unde7
- undo7
- undy9
- unit6
- urds6
- urns6
- used6
- vigs10
- vugs11
- wigs9
- wild9
- wind9
- wing10
- wins8
- yids7
- yins7
- zigs15
- zing16
- zins14