4 letters
- shul8
- shun8
- shut7
- sire4
- skee8
- sled6
- slew8
- sloe5
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- sole5
- sore4
- soul6
- sour5
- spue8
- spur8
- such10
- sued6
- suer5
- sues5
- suet5
- sugh9
- sulk10
- sulu7
- supe8
- sura5
- surd6
- sure5
- surf8
- teel5
- tees4
- teff10
- tele5
- tels5
- thee6
- thru7
- thus7
- tree4
- tref7
- true5
- tuff11
- tule6
- turf8
- tush7
- ughs9
- ukes9
- ulus7
- urbs8
- urds6
- urea5
- urge7
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- veer8
- vees8
- weel8
- weer7
- wees7
- were7
- whee9
- yule8
- zees13