4 letters
- sigh8
- sign7
- silt5
- simp10
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- site4
- sith6
- sits4
- sizy15
- skin9
- skip11
- skit8
- slip8
- slit5
- smit7
- snap8
- snib8
- snip8
- snit5
- snot5
- snye7
- soph9
- soth6
- span8
- spat7
- spay9
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spry9
- spun9
- stay6
- step7
- stey6
- stir4
- stop7
- stun6
- stye6
- suit5
- syli7
- sync10
- syne7
- syph11
- tain5
- tans5
- taps7
- tens5
- than7
- then7
- they8
- thin7
- thio6
- thir6
- this6
- thus7
- tics7
- tidy7
- ties4
- tils5
- tine5
- ting7
- tins5
- tint5
- tiny7
- tipi7
- tips7
- tits4
- tivy10
- tons5
- tony7
- toph9
- topi7
- tops7
- tosh6
- toys6
- trip7
- tuis5
- tuns6
- tups8
- tush7
- twin8
- tyes6
- tyin7
- tyne7
- type9
- typo9
- typp12
- typy11
- unit6
- viny11
- whin10
- whip12
- whit9
- whys11
- wins8
- winy10
- wish9
- wisp10
- wist7
- with9
- wits7
- wyns10
- xyst13
- yaps9
- yens7
- yeti6
- yids7
- yins7
- yipe9
- yips9
- yoni7
- yups10
- ywis9
- zins14
- zips16
- zits13