もたれかかっちゃう
凭れ掛かっちゃう
motarekakacchau

Godan Verb (ru)
Godan Verb (u)

The completive aspect (contracted form) - indicates completion or regret of もたれかかる

1. leaning + getting (into a state); leaning and ending up (in a state)

Completed Action
Colloquial
Usually Written in Kana