This is the 8559th most frequent Japanese word.
振る舞わ
"振る舞わ" (furumawa) means "to behave" or "to act."
Here, '振る舞う' is used to describe someone's behavior or demeanor in a social setting.
彼はパーティーで非常に礼儀正しく振る舞いました。
He acted very politely at the party.
In this sentence, '振る舞う' means to serve or give things generously.
彼女は食べ物を振る舞ってくれました。
She served the food for us.
'振る舞う' is utilized here to emphasize maintaining a certain comportment under specific circumstances.