The Collaborative International Dictionary
Thrasonical \Thra*son"ic*al\, a. [From Thrso, the name of a braggart soldier in Terence's ``Eunuch:'' cf. L. Thrasonianus.] Of or pertaining to Thraso; like, or becoming to, Thraso; bragging; boastful; vainglorious. -- Thra*son"ic*al*ly, adv.
C[ae]sar's thrasonical brag of 'I came, saw, and
overcame.'
--Shak.
Wiktionary
a. Like Thraso (a character in the play http://en.wikipedia.org/wiki/Eunuchus by http://en.wikipedia.org/wiki/Terence); boastful, bragging, vainglorious.
Usage examples of "thrasonical".
Not since the superb Mondor amazed the world has so thrasonical a bully been seen upon the stage.
The audience followed with relish the sly intriguings of Scaramouche, delighted in the beauty and freshness of Climene, was moved almost to tears by the hard fate which through four long acts kept her from the hungering arms of the so beautiful Leandre, howled its delight over the ignominy of Pantaloon, the buffooneries of his sprightly lackey Harlequin, and the thrasonical strut and bellowing fierceness of the cowardly Rhodomont.