聞きき流ながす

godan verb (-su), transitive verb

ignore what one hears; let something go in one ear and out the other; pay no attention to

Used when someone hears something but deliberately does not take it seriously or react to it. Often implies passive disregard rather than active confrontation.

• 彼かれの嫌いや味みはいつも聞きき流ながしている。

  I always let his sarcastic remarks go in one ear and out the other.

• 大だい事じな話はなしだから聞きき流ながさないでほしい。

  This is important, so please don't just ignore it.