jactātor — Lewis & Short
jactātor, ōris, m.id.,
I one who makes an ostentatious display of himself, a boaster, braggart:
rerum a se gestarum,Quint. 11, 1, 17:
civilitatis,Suet. Claud. 35; Stat. Th. 6, 837; Gell. 18, 4, 1.—Poet., with inf.:
ille sub hiberno somnos educere caelo Jactator,he boasts, Sil. 11, 403.