there's many a true word spoken in jest

there's many a true word spoken in jest

The things that one jokes about may in fact be true or become true. I know she said she was joking about being depressed, but I'm concerned—there's many a true word spoken in jest.
See also: jest, many, spoken, true, word
Farlex Dictionary of Idioms.
See also:
  • a woman is as old as she admits
  • admit
  • be (like) a bird in a gilded cage
  • appear to
  • a change of heart
  • a mystery to (one)
  • be (on) the wrong side of (an age)
  • be on the right/wrong side of 40, 50, etc.
  • a shoulder to cry on
  • a turn of phrase