Below are the words that matched your query...
Untrustful
- Not trustful or trusting.
Untuck
- To unfold or undo, as a tuck; to release from a tuck or fold.
Unturn
- To turn in a reserve way, especially so as to open something; as, to unturn a key.
Untwain
- To rend in twain; to tear in two.
Unvaluable
- Invaluable; being beyond price.