tune someone/something out

tune out

1. To stop paying attention to or mentally distance oneself from the environment or surroundings. I already covered this material in my other class, so I just tune out and doodle in my notebook. I can tell the kids are tuning out when I start talking about verbs and pronouns.
2. To willfully ignore or stop paying attention to someone or something. In this usage, a noun or pronoun can be used between "tune" and "out." I have to try to tune out the kid's shouting when I work from home. Stop tuning me out! I'm just trying to tell you why I'm upset.
See also: out, tune
Farlex Dictionary of Idioms.

tune someone/something out

tv. to ignore or disregard someone or something. I managed to tune out the constant clamor in the streets.
See also: out, someone, something, tune
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • wash (one's) hands of (someone or something)
  • wash hands of
  • wash one's hands of
  • wash your hands of
  • wash your hands of somebody/something
  • wash your hands of something/someone
  • for (one's) (own) sake
  • for sake
  • keep in sight
  • keep sight of (someone or something)