What does "god forbid" mean?

indicating that the occurrence of something is very undesirable

What is a synonym for "god forbid"?

Common synonyms include: by no means, never, no matter what, nohow, not at all, noway.

intj

intj ·Rare ·Advanced level

Intj

1
indicating that the occurrence of something is very undesirable idiomatic, subjunctive
"If, God forbid, there's a fire, head for the nearest exit."

"If, God forbid, there's a fire, head for the nearest exit."