4 letters
- shmo9
- shoe6
- shop9
- shot6
- shri6
- sial5
- sibs7
- sice7
- sics7
- side5
- sift7
- sign7
- sike8
- silo5
- silt5
- sima7
- simp10
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sire4
- sirs4
- site4
- sith6
- sits4
- size13
- skas8
- skat8
- skep11
- skim11
- skin9
- skip11
- skis8
- skit8
- slam8
- slap8
- slat5
- slim8
- slip8
- slit5
- sloe5
- slop8
- slot5
- smew10
- smit7
- smog9
- smut8
- snag7
- snap8
- snaw8
- sned6
- snib8
- snip8
- snit5
- snob8
- snog7
- snot5
- snow8
- snye7
- soak8
- soap7
- soar4
- sobs7
- soda5
- sods5
- sofa7
- soft7
- soil5
- soja13
- soke8
- sola5
- sole5
- soli5
- sols5
- soma7
- some7
- sone5
- song7
- sons5
- soon5
- soot4
- soph9
- sops7
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- sots4
- soup8
- sour5
- sous5
- sown8
- sows7
- soya6
- soys6
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spec10
- sped8
- spew10
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spry9
- spue8
- spun9
- spur8
- sris4
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- stem7
- step7
- stet4
- stew7
- stey6
- stir4
- stoa4
- stob7
- stop7
- stow7
- stum8
- stun6
- stye6
- suer5
- sues5
- suet5
- suit5
- sumo8
- sump11
- sums8
- suns6
- supe8
- sups8
- sura5
- sure5
- swam10
- swan8
- swap10
- swat7
- swim10
- swop10
- swot7
- syne7
- tabs7
- tace7
- taco7
- tads5
- tael5
- tags6
- tahr6
- tail5
- tain5
- taka8
- take8
- tala5
- tale5
- tali5
- tame7
- tamp10
- tams7
- tang7
- tank9
- tans5
- taos4
- tapa7
- tape7
- taps7
- tare4
- tarn5
- taro4
- tarp7
- tars4
- tart4
- task8
- tass4
- tate4
- tats4
- taus5