4 letters
- sews7
- sext11
- sham9
- shat6
- shea6
- shes6
- shim9
- shin7
- shit6
- shmo9
- shoe6
- shot6
- shun8
- shut7
- sial5
- sibb10
- 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
- skee8
- skim11
- skin9
- skis8
- skit8
- skua9
- slab8
- slam8
- slat5
- slim8
- slit5
- slob8
- sloe5
- slot5
- slub9
- slue6
- slum9
- slut6
- smew10
- smit7
- smog9
- smug10
- smut8
- snag7
- snap8
- snaw8
- sned6
- snib8
- snip8
- snit5
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- snye7
- soak8
- soap7
- soar4
- sobs7
- soda5
- sods5
- sofa7
- soft7
- soil5
- soja13
- soke8
- sola5
- sole5
- soli5
- sols5
- soma7
- some7
- sone5
- song7
- sons5
- soon5
- soot4
- sops7
- sora4
- sorb7
- sore4
- sori4
- sorn5
- sort4
- soth6
- sots4
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- sows7
- soya6
- soys6
- spae7
- spam10
- span8
- spas7
- spat7
- spin8
- spit7
- spot7
- spue8
- spun9
- sris4
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- stem7
- step7
- stet4
- stew7
- stey6
- stir4
- stoa4
- stob7
- stop7
- stow7
- stub8
- stud6
- stum8
- stun6
- stye6
- suba8
- subs8
- suds6
- sued6
- suer5
- sues5
- suet5
- suit5
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- suqs14
- sura5
- sure5
- suss5
- swab10
- swam10
- swan8
- swat7
- swim10
- swob10
- swot7
- swum11
- sybo9
- syne7
- tabs7
- tabu8
- tace7
- taco7
- tads5
- tael5
- tags6
- tail5
- tain5
- take8
- tale5
- tali5
- tame7
- tamp10
- tams7
- tang7
- tank9