4 letters
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sirs4
- site4
- sith6
- sits4
- skin9
- skip11
- skis8
- skit8
- slip8
- slit5
- slop8
- slot5
- slow8
- smit7
- snap8
- snaw8
- snib8
- snip8
- snit5
- snob8
- snog7
- snot5
- snow8
- soap7
- sobs7
- sods5
- soft7
- soil5
- soli5
- sols5
- sone5
- song7
- sons5
- soon5
- soot4
- soph9
- sops7
- sori4
- sorn5
- sort4
- soth6
- sots4
- soup8
- sous5
- sown8
- sows7
- soys6
- span8
- spas7
- spat7
- spew10
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spun9
- sris4
- staw7
- step7
- stew7
- stir4
- stoa4
- stob7
- stop7
- stow7
- stun6
- suit5
- suns6
- sups8
- swan8
- swap10
- swat7
- swig9
- swim10
- swob10
- swop10
- swot7
- syph11
- tain5
- tans5
- taos4
- taps7
- tass4
- taws7
- tens5
- tews7
- than7
- thaw9
- then7
- thew9
- thin7
- thio6
- thir6
- this6
- thou7
- thro6
- thus7
- tics7
- ties4
- tils5
- tine5
- ting7
- tins5
- tint5
- tiny7
- tipi7
- tips7
- tiro4
- tits4
- tods5
- toes4
- togs6
- toil5
- toit4
- toms7
- tone5
- tong7
- tons5
- tony7
- toon5
- tope7
- toph9
- topi7
- tops7
- tori4
- torn5
- tors4
- tosh6
- toss4
- tost4
- tots4
- town8
- tows7
- towy9
- toys6
- trio4
- trip7
- trop7
- trow7
- tsks8
- tuis5
- tuns6
- tups8
- tush7
- twas7
- twig9
- twin8
- twit7
- twos7
- tyin7
- typo9
- unit6
- unto6
- upon9
- vino9
- vows11
- wain8
- wait7
- wans8
- want8
- waps10
- wash9
- wasp10
- wast7
- wats7
- wens8
- went8
- wept10
- west7
- wets7
- whap12
- what9
- when10
- whet9
- whid10
- whig11
- whim12
- whin10
- whip12
- whir9
- whit9
- whiz18
- whoa9
- whom12
- whop12
- whys11
- wich12
- wigs9
- wilt8
- wimp13