a year later after you stopped seeing someone, you think everyone is getting on with their lives and then the crazy person you let go starts making trouble for you because it was this time last year they suddenly found out the world didn't revolve around them.
it must be my dumpiversary because my ex has gone through his phonebook telling tales outta school to people.
by gettingonwithlife July 11, 2010
An amount of years after a breakup. When the date of a person's dumpiversary comes, the person has a huge party with their friends. They sing breakup songs like Since U Been Gone, good 4 u, and Stronger (What Doesn't Kill You).
by iloveurbandictionary😊😍😃 October 12, 2021