IPA: /ˈʌpɪʃli/
KK: /ˈʌpɪʃli/
In a manner that shows arrogance or superiority; behaving in a self-important way.
He walked uppishly, as if he were better than everyone else.
Uppishly → It is formed from "up" (from Old English "upp", meaning higher or above) and "-ishly" (a suffix used to form adverbs indicating manner). The word "uppishly" means in a manner that is haughty or arrogant, as if one is elevated above others.
Think of someone acting 'higher' ('up') than others, which helps you remember that 'uppishly' describes a haughty or arrogant manner.