4 letters
- spud9
- spur8
- stob7
- stow7
- stub8
- stud6
- stum8
- suba8
- subs8
- sudd7
- suds6
- sued6
- suer5
- sumo8
- sump11
- sums8
- sura5
- surd6
- sure5
- surf8
- swab10
- swam10
- swim10
- swob10
- swop10
- swot7
- swum11
- sybo9
- tods5
- tomb10
- toms7
- tors4
- tour5
- tows7
- trod5
- trow7
- tubs8
- turd6
- twos7
- udos6
- umbo11
- umps11
- undo7
- updo9
- urbs8
- urds6
- urns6
- ursa5
- urus6
- used6
- user5
- vows11
- vrow11
- wabs10
- wads8
- ward8
- warm10
- wars7
- waur8
- webs10
- weds8
- whom12
- woad8
- woes7
- wogs9
- woks11
- wold9
- womb13
- wons8
- wood8
- woos7
- wops10
- word8
- wore7
- work11
- worm10
- worn8
- wort7
- wost7
- wots7
- wows10
- wuss8
- yobs9
- yods7
- your7
- yows9