Figuratively, safe in extreme conditions (9)
I believe the answer is:
bombproof
(Other definitions for bombproof that I've seen before include "Make secure against explosive devices" , "unlikely to go up" , "safe" .)
I've seen this clue in The Times and The Sunday 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.