°One who exhibits only superficial knowledge; a self-proclaimed expert with little real understanding.
"2003: Walter is [...] a dupe to the half-baked speculations of every sciolist from Descartes down to ‘Coglionissimo Borri’, and a pack of other dunces — Roy Porter, Flesh in the Age of Reason (Penguin 2004, p. 290)"
synonyms:
factotum, handyman, jack of all trades