by any chance

by any chance

Used as a polite emphasis to a request or question. Would you by any chance happen to know where the subway is from here? Let me know if you should come across a copy of that book by any chance.
See also: any, by, chance
Farlex Dictionary of Idioms.

by ˈany chance

used especially in questions, to ask whether something is true, possible, etc: Are you in love with him, by any chance?
See also: any, by, chance
Farlex Partner Idioms Dictionary
See also:
  • as we know it
  • I know
  • know what
  • before you know where you are
  • in the biblical sense
  • AFAIK
  • closed book, a
  • a closed book
  • before you know it
  • (I) can't say as I do