1 definition by Misnomer456

An anniversary for a sad, depressing, or generally bad event. Can be used humourously in some cases.
1.
Chuck: "Why so glum, chum?"
Eric: "My dad died a year ago today"
Chuck: "Oh... happy saddiversary dude. I'm sorry"

2.
Larry: "Happy saddiversary Sean!"
Sean: "Huh? What happened today?"
Larry: "Remember last year when you finally dumped that crazy chick you were dating? The one who always bit you while giving head?"
Sean: "Oh yeah... Cheers!"
by Misnomer456 October 29, 2010
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