ταχύγλωσσος
From LSJ
τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
English (LSJ)
ον,
A quick of tongue, talking fast, Hp.Epid.2.6.1, Ruf.Fr.70, etc.
German (Pape)
[Seite 1076] schnellzüngig, voreilig im Reden, Hippocr.