4 letters
- scan8
- scar7
- scat7
- scot7
- scud9
- scum11
- scut8
- seam7
- sear4
- seat4
- send6
- sent5
- sera4
- seta4
- shad7
- sham9
- shat6
- shmo9
- shod7
- shoo6
- shot6
- shun8
- shut7
- sima7
- skat8
- skua9
- slam8
- slat5
- slot5
- slum9
- slur6
- slut6
- smit7
- smog9
- smug10
- smut8
- snag7
- snap8
- snaw8
- sned6
- snit5
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- soak8
- soap7
- soar4
- soda5
- sods5
- sofa7
- soft7
- soja13
- sola5
- sold6
- solo5
- soma7
- some7
- sone5
- song7
- sons5
- sook8
- soon5
- soot4
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- sots4
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- soya6
- spam10
- span8
- spar7
- spat7
- spot7
- spud9
- spun9
- spur8
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- stem7
- stir4
- stoa4
- stob7
- stop7
- stow7
- stub8
- stud6
- stum8
- stun6
- suba8
- sudd7
- suds6
- sued6
- suer5
- suet5
- suit5
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- surd6
- sure5
- surf8
- swam10
- swan8
- swat7
- swot7
- swum11
- tabs7
- tabu8
- taco7
- tads5
- tags6
- tahr6
- tain5
- tame7
- tamp10
- tams7
- tang7
- tank9
- tans5
- taos4
- taps7
- tare4
- tarn5
- taro4
- tarp7
- tars4
- tart4
- task8
- tass4
- tats4
- taus5
- taut5
- tavs8
- taws7
- team7
- tear4
- teas4
- teds5
- tend6
- tens5
- term7
- tern5
- than7
- thou7
- thro6
- thru7
- thud8
- thus7
- tins5
- tiro4
- toad5
- tods5
- tody7
- toea4
- toed5
- toes4
- tofu8
- toga6
- togs6
- tola5
- told6
- tolu6
- tomb10
- tome7
- toms7
- tone5
- tong7
- tons5
- tony7
- took8
- tool5
- toom7
- toon5
- toot4
- tops7
- tora4
- torc7