4 letters
- shun8
- shut7
- sike8
- sire4
- skee8
- skeg10
- skep11
- skew11
- skua9
- slue6
- slur6
- soke8
- sore4
- souk9
- sour5
- spue8
- spur8
- such10
- suck12
- sued6
- suer5
- sues5
- suet5
- sugh9
- sulk10
- sunk10
- supe8
- sura5
- surd6
- sure5
- surf8
- syke10
- thru7
- thus7
- trek8
- true5
- turk9
- tush7
- tusk9
- ughs9
- ukes9
- urbs8
- urds6
- urea5
- urge7
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- yerk10
- yeuk11
- yuks11
- zeks17
- zerk17