διὰ λαμπροτάτου βαίνοντες ἁβρῶς αἰθέρος → passing lightly through clear-shining air (Euripides, Medea 829)
prŏtervē: adv., v. protervus.
prŏtervē¹⁴ (protervus), effrontément, impudemment, sans retenue : Ter. Hec. 503 ; Cic. Rep. 1, 68