4 letters
- stub8
- stud6
- suba8
- subs8
- sudd7
- suds6
- sued6
- suer5
- sues5
- suet5
- sums8
- suns6
- supe8
- sups8
- suqs14
- surd6
- sure5
- suss5
- swab10
- swob10
- swum11
- teds5
- tews7
- tube8
- tubs8
- udos6
- ukes9
- unbe9
- unde7
- urbs8
- urds6
- used6
- user5
- uses5
- wabs10
- wade8
- wads8
- waes7
- webs10
- weds8
- weed8
- wees7
- weld9
- wend9
- wens8
- west7
- wets7
- wide8
- wise7
- wiss7
- woes7
- wuss8
- wyes9
- yews9
- zebu17
- zeds14