προγάστωρ
From LSJ
ἑὰν δὲ προσποιούμενος ᾗ τὰ μαθήματά πως ἀπείρως προβάλλων, οὐκ ἔστιν αἰτίας ἔξω → But should one profess knowledge as he puts forward something in an inexperienced way, he is not without blame (Pappus 3.1.30.31f.)
English (LSJ)
ορος, ὁ, ἡ,
A pot-bellied, Gerhard Phoinix p.6, Str.4.4.6, App.Anth.5.11, Luc.Nec.11, Gal.10.145, Adam.2.31; of a pot-bellied bottle, Antiph. 224.6: Comp. προγαστρότερα Hp.Aër.24.