irregardless

Portmanteau of "irrespective" and "regardless", likely used mistakenly rather than deliberately. While technically this could be a meaningful term directly, due to the double negative of ir- and -less this would make this mean the opposite of the terms that form it, which is never the intent when used.

a lot of people hate it, but people use this term irregardless

embibliate

Buy a bunch of books purely as decoration, to show off how smart you most definitely are

I got it to embibliate my coffee table