4 letters
- sipe7
- sire4
- sirs4
- site4
- sith6
- size13
- sled6
- slew8
- slid6
- slim8
- slip8
- slit5
- sloe5
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- soil5
- sole5
- soli5
- sore4
- sori4
- soul6
- sour5
- spue8
- spur8
- sris4
- stir4
- such10
- sued6
- suer5
- sues5
- suet5
- sugh9
- suit5
- sulk10
- sulu7
- supe8
- sura5
- surd6
- sure5
- surf8
- syli7
- tels5
- thir6
- this6
- thru7
- thus7
- tier4
- ties4
- tile5
- tils5
- tire4
- tirl5
- true5
- tuis5
- tule6
- tush7
- ughs9
- ukes9
- ulus7
- urbs8
- urds6
- urea5
- urge7
- uric8
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- veil9
- vier8
- vies8
- vile9
- virl9
- vise8
- weir7
- whir9
- wile8
- wire7
- wise7
- wish9
- yule8