4 letters
- scud9
- sear4
- seed5
- seer4
- send6
- sera4
- sere4
- serf7
- sers4
- shed7
- side5
- sire4
- sled6
- slue6
- slur6
- sned6
- sord5
- sore4
- sour5
- sped8
- spud9
- spue8
- spur8
- stud6
- sudd7
- suds6
- sued6
- suer5
- sues5
- suet5
- supe8
- sura5
- surd6
- sure5
- surf8
- teds5
- true5
- turd6
- udos6
- ukes9
- unde7
- urbs8
- urds6
- urea5
- urge7
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- weds8
- zeds14