(adv) in an idiotic manner, Example:what arouses the indignation of the honest satirist is not the fact that people in positions of power or influence behave idiotically
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
n. [ NL., fr. Gr. &unr_; belonging to a private man, private. See Idiot. ] A dictionary of a peculiar dialect, or of the words and phrases peculiar to one part of a country; a glossary. [ 1913 Webster ]