The day that would have been the anniversary of a relationship that failed.
Michelle: I would have been married to Oscar 12 years today... if he hadn't been a total cheating, lying douchebag that I divorced.
Amber: Happy nonniversary.
by derby mined August 13, 2011
What you call your wedding anniversary after you are divorced or separated.
Tomorrow I will be celebrating my 2nd nonniversary.
by drguy June 01, 2013

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