In a fastuous way or manner; esp. haughtily, arrogantly, with excessive pride, vanity, or self-importance; (later also) in a manner characterized…

Scottish. Self-importantly, conceitedly.

With an air of superiority, haughtiness, or self-importance. Cf. to hold one's head high at hold, v. 30a, with one's nose in the air at nose, n.…

In a pretentious manner.

In an uppish (sense 2d) manner.

In a snotty manner.

In a snooty manner, superciliously.