Definitions by .d.h.
unniversary
The annual celebration of a leap day marriage in any non-leap year. Usually celebrated on February 28 and/or March 1.
Wife: Since we got married on leap day, we don't have an anniversary this year.
Husband: Then I don't have to get you anything, right?
Wife: No, it's our unniversary. I still expect gifts.
Husband: Then I don't have to get you anything, right?
Wife: No, it's our unniversary. I still expect gifts.
unniversary by .d.h. March 16, 2011