conspicuous by absence

Related to conspicuous by absence: cut some slack, give it a shot, fleeting glance, pick up on

conspicuous by (one's)/it's absence

Especially noticeable because of being missing or absent (from something). You're the loudest one in the class, so of course you're conspicuous by your absence! The governor's economic stimulus plan was conspicuous by its absence during his speech this afternoon.
See also: absence, by, conspicuous
Farlex Dictionary of Idioms.

*conspicuous by one's absence

Cliché noticeably absent (from an event). (*Typically: be ~; made ~.) How could the bride's father miss the wedding? He was certainly conspicuous by his absence.
See also: absence, by, conspicuous
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • conspicuous by (one's)/it's absence
  • conspicuous by its absence
  • conspicuous by your absence
  • conspicuous by your/its absence
  • be conspicuous by (one's) absence
  • conspicuous
  • make a drama out of
  • make a drama out of (something)
  • make a mountain of a molehill
  • mole