Metaphysics (noun): Nonsense, woo-woo, bamboozlement, bunco, chicanery, malarky, flimflam, flummery, humbuggery, mountebankery, pettifoggery, skullduggery, legerdemain, lunacy, dupery, junk science, pseudoscience, fiddle-faddle, claptrap, tomfoolery, twaddle, hogwash, hokum, and hooey