be on in years

be on in years

To be advanced or advancing in age; to be old or aging. I might be a little bit on in years, but I'm no fool when it comes to technology! Your grandfather's on in years, so you may need to speak a bit more loudly around him.
See also: on, year
Farlex Dictionary of Idioms.
See also:
  • getting on (in years)
  • get on in years
  • on in years
  • up in years
  • along in years
  • fool
  • in (one's) second childhood
  • in second childhood
  • every fool thing
  • any old thing