ἀερόμυθος
From LSJ
ἀλλ᾽ οὐδὲ εἷς τέκτων ὀχυρὰν οὕτως ἐποίησεν θύραν, δι᾽ἧς γαλῆ καὶ μοιχὸς οὐκ εἰσέρχεται → but no carpenter ever made a door so secure that a weasel or a womanizer could not pass through it
Greek (Liddell-Scott)
ἀερόμυθος: -ον, ὁ μάταια φλυαρῶν, ὁ λέγων λόγους τοῦ ἀέρος, Φίλων ΙΙ, 268, 46.
Spanish (DGE)
-ον charlatán Ph.2.268.