monthiversary

plural monthiversaries · alternative monthaversary

1. informalA commemorative event like an anniversary, but taking place monthly rather than annually.

   I might have expected you to forget. It's our first monthiversary!

   1922, Courtney Ryley Cooper, The White Desert, page 301

   2 more examples

   The Companies make a monthly deduction from the Policy's cash value on the Policy's effective date and on each monthiversary (the same day of each succeeding month as the Policy's effective date, or, if there is no comparable valuation, the next valuation date).

   1999, United States Securities and Exchange Commission, SEC Docket, volume 69, page 861

   “Happy monthiversary.” “Wait... what?” “Today, it's exactly one month since we met. I kept count.”

   2011, David N. Brown, Zombies Vs. Exotroopers, page ii

   Synonyms: mensiversary