I'm having difficulty determining the meaning for заумничать. Neither Google nor Wiktionary know the word. Google, however, does know умничать which it says means "to try to be clever" or "to show off one's intelligence." Another source equated заумничать with начать умничать which Google says means "to start to philosophize." The prefix за- has a range of meanings, but one is "begin" and so it might be reasonable to say that заумничать means "to start trying to be clever." It seems that there must be a more concise meaning. What would be the best definition for заумничать? Thanks!