τυφόω

Etymology
From.

Verb

 * 1) to delude, especially
 * 2) to "puff up" with pride, arrogance, insolence, etc.

Usage notes
Usually used in the past perfect tense ("to have been deluded" or "puffed up with pride") to describe a present state ("to be demented" or "prideful, arrogant, insolent, etc.").