To be suffering from trying to seem more important or significant than you really are. Similar to pretentious
Person 1: Is Peter coming to the party later?
Person 2: Na'h, he 's got pretentionitis and he's being a dick lately.
Person 2: Na'h, he 's got pretentionitis and he's being a dick lately.
by SneakySsssssss February 13, 2018
Get the Pretentionitismug.