4 letters
- scad8
- scan8
- scat7
- scot7
- scud9
- scut8
- seas4
- seat4
- send6
- sent5
- seta4
- sets4
- shad7
- shat6
- shod7
- shot6
- shun8
- shut7
- sins5
- sits4
- skas8
- skat8
- skua9
- slat5
- slot5
- slut6
- smut8
- snag7
- snap8
- snaw8
- sned6
- snit5
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- soak8
- soap7
- soar4
- sobs7
- soda5
- sods5
- sofa7
- soft7
- soja13
- sola5
- sold6
- sols5
- soma7
- sone5
- song7
- sons5
- soon5
- soot4
- sops7
- sora4
- sord5
- sorn5
- sort4
- soth6
- sots4
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- sows7
- soya6
- soys6
- span8
- spas7
- spat7
- spot7
- spud9
- spun9
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- stoa4
- stob7
- stop7
- stow7
- stub8
- stud6
- stum8
- stun6
- suba8
- subs8
- sudd7
- suds6
- sued6
- sues5
- suet5
- suit5
- sumo8
- sums8
- sung8
- sunk10
- sunn7
- suns6
- sups8
- suqs14
- sura5
- surd6
- suss5
- swan8
- swat7
- swot7
- tabs7
- tabu8
- taco7
- tads5
- tags6
- tain5
- tams7
- tang7
- tank9
- tans5
- taos4
- taps7
- tarn5
- taro4
- tars4
- task8
- tass4
- tats4
- taus5
- taut5
- tavs8
- taws7
- teas4
- teds5
- tend6
- tens5
- than7
- thou7
- thud8
- thus7
- tins5
- toad5
- tods5
- tody7
- toea4
- toed5
- toes4
- tofu8
- toga6
- togs6
- tola5
- told6
- tolu6
- toms7
- tone5
- tong7
- tons5
- tony7
- toon5
- tops7
- tora4
- torn5
- tors4
- tosh6
- toss4
- tost4
- tots4
- tour5
- tout5
- town8
- tows7
- toys6
- trad5
- trod5
- tsar4
- tsks8
- tuba8
- tubs8
- tufa8
- tugs7
- tuis5
- tuna6
- tune6
- tung8
- tuns6
- tups8
- turd6
- turn6
- tush7
- tusk9
- tuts5
- twas7
- twos7
- udos6
- ulan7
- ulna7