braggart
From LSJ
οὐ γὰρ ἂν τό γε πραχθὲν ἀγένητον θείη → since he cannot make what was done as though it had not come to pass
adj.
Ar. and P. ἀλάζων, P. κομπώδης (Thuc.), V. ὑπέρφρων, ὑψήγορος, στόμαργος, γαῦρος; see boastful.
(Of words), etc.: P. and V. ὑψηλός, P. ὑπέρκοπος.