from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A day that is an exact month (or specified number of months) since the occurrence of a significant event.


Sorry, no etymologies found.


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  • This sounds like the anniversary for Mensa members.

    January 18, 2007

  • No, that would be nerdiversary. ;-)

    January 18, 2007

  • "'Tis the mensiversary of our wedding," her husband answered gravely.

    —Max Beerbohm, The Happy Hypocrite, 1897

    not in OED

    December 31, 2008

  • the celebration of an event at number of months. This is derived from anniversary, rather than the gratingly imperfect "We are celebrating our 6 month anniversay." Based on "mensis" L month, and versus, pp vertere to turn. I first used it in the 1960's at University of Chicago, I find it on the web from others, who have had the same concern. I imagine it is much older.

    March 27, 2009