Rudely nonchalant (7)
I believe the answer is:
offhand
(Other definitions for offhand that I've seen before include "Rudely casual; impromptu" , "Nonchalant" , "Ad lib" , "Cavalier" , "Brusque" .)
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.