かこっちゃう
託っちゃう
kakocchau

Godan Verb (tsu)
Godan Verb (u)

The completive aspect (contracted form) - indicates completion or regret of かこつ

1. To entrust (and it's gone); To rely on (with regret); To leave it to (with a sense of loss)

Completed Action
Colloquial
Usually Written in Kana