4 letters
- soli5
- soul6
- spit7
- staw7
- stew7
- stir4
- stow7
- stub8
- stud6
- stum8
- stun6
- suet5
- suit5
- sulk10
- sulu7
- surf8
- swat7
- swig9
- swim10
- swot7
- swum11
- syli7
- tail5
- tali5
- taus5
- taws7
- tels5
- tews7
- this6
- thus7
- tics7
- ties4
- tiff10
- tile5
- till6
- tils5
- tilt5
- tins5
- tips7
- tirl5
- tits4
- tofu8
- toil5
- tolu6
- tows7
- tubs8
- tufa8
- tuff11
- tuft8
- tugs7
- tuis5
- tule6
- tuns6
- tups8
- turf8
- tush7
- tusk9
- tuts5
- twas7
- twig9
- twin8
- twit7
- twos7
- ulus7
- unit6
- utas5
- waft10
- waif10
- wail8
- wait7
- wast7
- wats7
- waul9
- weft10
- welt8
- west7
- wets7
- whit9
- wife10
- wigs9
- wild9
- wile8
- will9
- wilt8
- wily10
- wins8
- wise7
- wish9
- wisp10
- wiss7
- wist7
- wite7
- with9
- wits7
- wolf11
- wost7
- wots7
- writ7
- wuss8
- ywis9
- zits13