Mind ___ matter (4)

I believe the answer is:

over

(Other definitions for over that I've seen before include "Finished - across - in excess" , "end to radio communication?" , "See 12" , "remaining" , "Passed" .)

I've seen this clue in the Universal.

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.