4 letters
- spun9
- stay6
- stum8
- stun6
- suba8
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- swam10
- swan8
- sway9
- swum11
- sync10
- syne7
- tams7
- tans5
- taus5
- tuna6
- tuns6
- ulan7
- ulna7
- umps11
- unai6
- unau7
- undy9
- upas8
- urns6
- ursa5
- utas5
- vans9
- vaus9
- wans8
- wany10
- ways9
- wyns10
- yaks10
- yams9
- yang9
- yank11
- yaps9
- yarn7
- yaud8
- yaup10
- yawn10
- yaws9
- yays8
- yean7
- yeas6
- yens7
- yins7
- yuan8
- yuca10
- yuga9
- yuks11
- yups10
- zany16