Sarcasm Panic but if your not sure of dismissive:
bloated, boastful, cavalier, cocky*, conceited, contemptuous, cool*, disdainful, dismissive , domineering, egotistic, egotistical, haughty, high-and-mighty, high-handed, huffy, imperious, insolent, lofty, narcissistic, ostentatious, overbearing, pompous, presumptuous, pretentious, puffed up, scornful, self-satisfied, sniffy, snobbish, snooty, stuck-up, supercilious, superior, vain, vainglorious
