insolence
From LSJ
τῶν γὰρ μετρίων πρῶτα μὲν εἰπεῖν τοὔνομα νικᾷ → the first mention of the word moderation wins the game (Euripides, Medea 125f.)
subs.
P. and V. ὕβρις, ἡ, ἀναίδεια, ἡ, θράσος, τό, Ar. and P. ἀναισχυντία, ἡ, P. ἐπήρεια, ἡ, ἀσέλγεια, ἡ, V. τὸ ἀναίσχυντος, χλιδή, ἡ.