4 letters
- scan8
- scar7
- scat7
- scop10
- scot7
- scow10
- scud9
- scum11
- scup11
- scut8
- seal5
- seat4
- sect7
- sent5
- seta4
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shin7
- shit6
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shul8
- shun8
- shut7
- sial5
- silo5
- silt5
- sinh7
- sith6
- skat8
- skua9
- slab8
- slag7
- slam8
- slap8
- slat5
- slaw8
- slay7
- slit5
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- smut8
- snag7
- snap8
- snaw8
- snit5
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- soak8
- soap7
- soar4
- sock11
- soda5
- sofa7
- soft7
- soil5
- soja13
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- soma7
- sone5
- song7
- sons5
- sook8
- soon5
- soot4
- soph9
- sora4
- sorn5
- sort4
- soth6
- sots4
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- soya6
- span8
- spat7
- spot7
- spun9
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- stoa4
- stob7
- stop7
- stow7
- stub8
- stud6
- stum8
- stun6
- suba8
- such10
- suck12
- suet5
- sugh9
- suit5
- sulk10
- sulu7
- sumo8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- swan8
- swat7
- swot7
- sync10
- tabs7
- tabu8
- tace7
- tach9
- tack11
- taco7
- tact7
- tads5
- tael5
- tags6
- tahr6
- tail5
- tain5
- taka8
- tala5
- talc8
- tale5
- tali5
- talk9
- tall6
- tams7
- tang7
- tank9
- tans5
- taos4
- tapa7
- taps7
- tarn5
- taro4
- tars4
- task8
- tass4
- tats4
- taus5
- taut5
- tavs8
- taws7
- taxa11
- teal5
- teas4
- tela5
- tels5
- tens5
- thae6
- than7
- that6
- thaw9
- then7
- thin7
- thio6
- this6
- thou7
- thro6
- thru7
- thud8