4 letters
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shri6
- shul8
- shun8
- shut7
- sima7
- skua9
- slam8
- slum9
- slur6
- smog9
- smug10
- smut8
- soak8
- soap7
- soar4
- sock11
- soda5
- sofa7
- soja13
- sola5
- soma7
- some7
- soph9
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- souk9
- soul6
- soup8
- sour5
- sous5
- soya6
- spam10
- spar7
- spur8
- star4
- stoa4
- stum8
- suba8
- such10
- suck12
- suer5
- sugh9
- sumo8
- sump11
- sums8
- sura5
- surd6
- sure5
- surf8
- swam10
- swum11
- tach9
- taco7
- tahr6
- tams7
- taos4
- taro4
- tars4
- taus5
- thou7
- thro6
- thru7
- thus7
- toms7
- tora4
- torc7
- tors4
- tosh6
- tour5
- tram7
- tsar4
- tush7
- udos6
- ughs9
- umbo11
- umps11
- unco9
- upas8
- urbs8
- urds6
- urea5
- uric8
- urns6
- ursa5
- urus6
- user5
- utas5
- vacs11
- vara8
- vars8
- vasa8
- vaus9
- warm10
- wars7
- wash9
- waur8
- wham12
- whoa9
- whom12
- worm10
- yams9
- your7
- yuca10
- yuch12