pretentiosity 

The state or act of being pretentious - affecting an air of superiority or culture where none truly exists.

"The latest discovery of Jane Austen's unprinted masterpiece, 'Pointlessness and Pretentiosity', brings together the dramatic cycle with a fitting juxtaposition of anagnorisis and perepetaea, providing the quintessential climax and denouement if you will, to a genre that is already fucking full of shit to be honest."

Siskel and Ebert, "Two-Birdies-Up Film Reviews"

pretentiosity by HMB March 27, 2003

Pretentionitis 

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.

Pretentionitis by SneakySsssssss February 13, 2018