Coxcombical

The majority of these idlers were impudent-looking braggarts, who, with jaunty air and coxcombical show of superiority, endeavoured to enforce their own opinions, and to silence those of every one else.

Source: wiktionary

Marlow is a coxcombical prig, that is the truth on't; and if a man will expose himself, why, he must even take what follows.

Source: wiktionary

Of Wordsworth's demeanour and physical presence, De Quincey's account, silly, coxcombical, and vulgar, is the worst; Carlyle's, as might be expected from his magical gift of portraiture, is the best.

Source: wiktionary