adjective: Bragging or boastful.
After Thraso, a braggart soldier in the comedy Eunuchus (161 BCE) by the Roman playwright Terence. The name is derived from the Greek word tharsos (bold). Earliest documented example of the word used allusively: 1564.
“But I decided to give further thought to this friend’s thrasonical effusion.”
Ground Zero Ekitiland; The Nation (Lagos, Nigeria); Apr 15, 2009.