"irregardless" Honestly, is that even a real word?
I am driven crazy by the current overuse of the word "like" (EX: He was like, get out of here so I was like, no way this is my house too)
It is also annoying when, after speaking part of a sentence, the speaker just trails off and ends it with the word "so" instead of completing their thought. What the hell is that? Am I supposed know what they are thinking? Am I to fill in the blank however I like, or did they forget their point partway through?