θρηνητήρ
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)
ῆρος, ὁ,
A mourner, wailer, A.Pers.938 (lyr.).
German (Pape)
[Seite 1217] ῆρος, ὁ, der Wehklagende, Aesch. Pers. 937.