(if the) truth be known

(if the) truth be known

I must admit; to be honest; in actuality. Truth be known, even though I majored in English literature, I've never read anything by Hemingway! I know I said I wanted to go out to the bars tonight, but if the truth be known, I'd rather just stay home and watch a movie.
See also: known, truth
Farlex Dictionary of Idioms.

if (the) ˌtruth be ˈknown/ˈtold

used to tell somebody the true facts about a situation, especially when these are not known by other people: None of the students really liked the new teacher. In fact, if the truth be told, everyone was rather afraid of him.
See also: if, known, told, truth
Farlex Partner Idioms Dictionary
See also:
  • if truth be known/told
  • (if the) truth be told
  • to tell the truth
  • tell you the truth
  • the honest truth
  • God's honest truth
  • honest to a fault
  • make an honest buck
  • earn an honest buck
  • an honest buck