4 letters
- tups8
- tusk9
- ukes9
- ulan7
- ulna7
- ulus7
- ulva10
- umps11
- upas8
- urea5
- ursa5
- used6
- user5
- uses5
- utas5
- uvea9
- vacs11
- vale9
- vase8
- vaus9
- veal9
- vela9
- wack14
- waes7
- wake11
- wale8
- walk12
- waps10
- wasp10
- wauk12
- waul9
- weak11
- weal8
- weka11
- wuss8
- yack13
- yaks10
- yaps9
- yaup10
- yeas6
- yelk11
- yelp10
- yeuk11
- yuca10
- yuck14
- yuks11
- yule8
- yups10
- zaps16
- zeal14
- zeks17