4 letters
- ulna7
- umbo11
- umps11
- unai6
- unau7
- unci9
- unco9
- undo7
- unit6
- unto6
- upas8
- upon9
- urbs8
- urds6
- urea5
- uric8
- urns6
- ursa5
- urus6
- user5
- utas5
- vain9
- vair8
- vans9
- vars8
- vaus9
- vims11
- vina9
- vino9
- visa8
- wain8
- wair7
- wans8
- warm10
- warn8
- wars7
- wash9
- waur8
- wham12
- whim12
- whin10
- whir9
- whoa9
- whom12
- wino8
- wins8
- wish9
- wons8
- woos7
- worm10
- worn8
- yams9
- yarn7
- yins7
- yirr6
- yoni7
- your7
- yuan8
- zins14
- zoom16
- zoon14
- zoos13
- zori13