adjective having an exaggerated sense of one's own importance or ability
used colloquially to describe someone who is overly proud or boastful
often used to describe someone who is arrogant, conceited, or stuck-up
used to describe someone who is acting superior or snobbish
In a literary context, 'biggety' may be used to describe a character who is arrogant or conceited.
A psychologist may use 'biggety' to describe a patient who exhibits narcissistic traits.