4 letters
- unde7
- upas8
- upby13
- upon9
- urbs8
- urds6
- urea5
- urge7
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- utas5
- uvea9
- vane9
- vans9
- vars8
- vase8
- vaus9
- vena9
- vera8
- verb11
- wabs10
- waes7
- wake11
- wane8
- wans8
- waps10
- ware7
- wark11
- warn8
- warp10
- wars7
- wasp10
- wauk12
- waur8
- weak11
- wean8
- wear7
- webs10
- weka11
- wens8
- wrap10
- wren8
- wuss8
- yaks10
- yank11
- yaps9
- yare6
- yarn7
- yaup10
- yean7
- year6
- yeas6
- yens7
- yerk10
- yeuk11
- yuan8
- yuks11
- yups10
- zaps16
- zebu17
- zeks17
- zerk17