4 letters
- spin8
- spot7
- spud9
- spue8
- spun9
- spur8
- stop7
- stow7
- stud6
- stun6
- subs8
- such10
- sudd7
- suds6
- sued6
- sues5
- sugh9
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- suqs14
- surd6
- suss5
- swan8
- swap10
- swob10
- swop10
- swot7
- swum11
- syph11
- thou7
- thud8
- thus7
- tods5
- tons5
- toph9
- tops7
- tosh6
- toss4
- town8
- tows7
- tuns6
- tups8
- tush7
- twos7
- udos6
- ughs9
- umps11
- unco9
- unde7
- undo7
- undy9
- unto6
- upas8
- updo9
- upon9
- urds6
- urns6
- used6
- uses5
- vows11
- wads8
- wand9
- wans8
- waps10
- wash9
- wasp10
- weds8
- wend9
- wens8
- whap12
- when10
- whid10
- whin10
- whip12
- whoa9
- whom12
- whop12
- whys11
- wind9
- wino8
- wins8
- wish9
- wisp10
- wiss7
- woad8
- woes7
- wogs9
- woks11
- wold9
- wonk12
- wons8
- wont8
- wood8
- woos7
- wops10
- word8
- worn8
- wost7
- wots7
- wows10
- wuss8
- wynd11
- wyns10
- yodh9
- yods7
- yond8
- yows9
- yups10