興きょうが乗のる

expression, godan verb (-ru)

get into the swing of things; warm up to; get excited by

Describes becoming absorbed in an activity, often after an initial period of hesitation or when one's mood rises to match the occasion. Commonly used when someone starts enjoying a conversation, performance, or creative work.

• 最さい初しょは緊きん張ちょうしていたが、話はなしているうちに興きょうが乗のってきた。

  I was nervous at first, but as we talked I got into the swing of things.

• 彼かれは酒さけが入はいると興きょうが乗のって、面おも白しろい話はなしを始はじめた。

  Once he had a drink, he warmed up and started telling interesting stories.