The first anniversary from breaking up with an asshole where you go out and party.
"Today is my my one-year anti-versary of being away from that dick ex-husband of mine. Let's go celebrate."
by SharieD April 18, 2010
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(n.) The calendar day corresponding to a day in the past when something irretrievably shitty occurred.
Tomorrow is the antiversary of my hound dog's death, and I'd rather drink liquid lye than go to work.
by Toll Carom April 08, 2017
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