godan verb (-ru), transitive verb
Casual, somewhat rough word for discarding or abandoning something, often with a sense of not caring about it anymore.
古い雑誌をうっちゃった。
I threw away the old magazines.
彼は家族をうっちゃって、一人で海外に行った。
He abandoned his family and went abroad alone.
godan verb (-ru), transitive verb
neglect; leave alone; let be
Used when someone neglects a duty or leaves something/someone unattended, often implying irresponsibility.
仕事をうっちゃって遊びに行った。
He neglected his work and went out to have fun.
子供をうっちゃってお酒を飲むなんて信じられない。
I can't believe they'd leave their child alone and go drinking.