4 letters
- sorn5
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- soya6
- soys6
- spun9
- stob7
- stub8
- stun6
- suba8
- subs8
- sumo8
- sung8
- sunk10
- sunn7
- suns6
- swob10
- sybo9
- sync10
- syne7
- toby9
- tons5
- tony7
- toon5
- toyo6
- toys6
- tubs8
- tuns6
- udos6
- umbo11
- unbe9
- unco9
- undo7
- undy9
- unto6
- upby13
- upon9
- urbs8
- urns6
- wons8
- woos7
- wyns10
- yens7
- yins7
- yobs9
- yods7
- yoks10
- yond8
- yoni7
- your7
- yows9
- yuan8
- yuks11
- yups10
- zoon14
- zoos13