りだしちゃう
koridashichau

Godan Verb (su)
Godan Verb (u)

The completive aspect (contracted form) - indicates completion or regret of 凝りだす

1. To start solidifying; To begin to congeal; To start setting (like a liquid); To become fixated; To dwell on; To get stuck on (a thought)

Completed Action
Colloquial