4 letters
- shmo9
- shoe6
- show9
- shun8
- sima7
- sine5
- skee8
- skew11
- skua9
- slam8
- slaw8
- slew8
- sloe5
- slow8
- slue6
- slum9
- smew10
- smog9
- smug10
- smut8
- snag7
- snap8
- snaw8
- sned6
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- snye7
- soak8
- soap7
- soar4
- soda5
- sofa7
- soja13
- soke8
- sola5
- sole5
- soma7
- some7
- sone5
- song7
- sons5
- soon5
- sora4
- sore4
- sorn5
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- sows7
- soya6
- spae7
- spam10
- span8
- spew10
- spue8
- spun9
- staw7
- stem7
- stew7
- stoa4
- stow7
- stum8
- stun6
- suba8
- sued6
- suer5
- sues5
- suet5
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sura5
- sure5
- swab10
- swag9
- swam10
- swan8
- swap10
- swat7
- sway9
- swim10
- swob10
- swop10
- swot7
- swum11
- syne7
- tame7
- tams7
- tans5
- taos4
- taus5
- taws7
- team7
- teas4
- teem7
- teen5
- tees4
- tens5
- tews7
- toea4
- toes4
- tome7
- toms7
- tone5
- tons5
- town8
- tows7
- tuna6
- tune6
- tuns6
- twae7
- twas7
- twee7
- twos7
- udos6
- ukes9
- ulan7
- ulna7
- umbo11
- umps11
- unai6
- unau7
- unbe9
- unco9
- unde7
- undo7
- unto6
- upas8
- upon9
- urea5
- urns6
- ursa5
- used6
- user5
- uses5
- utas5
- uvea9
- vane9
- vans9
- vase8
- vaus9
- vaws11
- vees8
- vena9
- voes8
- vows11
- wabs10
- wade8
- wads8
- waes7
- wage9
- wags9
- wain8
- wake11
- wale8
- wame10
- wand9
- wane8
- wans8
- want8
- wany10
- waps10
- ware7
- warm10
- warn8
- wars7
- wash9
- wasp10
- wast7
- wats7
- wauk12
- waul9
- waur8
- wave11
- waws10
- ways9
- weak11
- weal8
- wean8
- wear7
- webs10
- weds8
- weed8
- week11
- weel8
- ween8
- weep10
- weer7