Valid but open to legal challenge (8)
I believe the answer is:
voidable
(Another definition for voidable that I've seen is " Capable of being legally annulled".)
I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.