English

Noun

decaversary ‎(plural decaversaries)

1. (informal, rare) The tenth anniversary of something.
   • 2003, Albert Goldbarth, Combinations of the Universe, Ohio State University Press (2003), ISBN 9780814209257, page 122:

     where Rick and Dara took their vows. The priest

     was good, and the cake was good, and the wine so kickass special

     that they saved a liter to share on their decaversary.

   • 2010, "VICS still in the mix", Global Times, 7 May 2010:

     In an anniversary event perhaps second only to the 60th birthday celebrations of the People's Republic, Beijing nightclub stalwart VICS begins a month-long celebration of it's^[sic] "decaversary" this weekend with a series of events designed to confirm its position as the city's leading drunken experience.

   • 2011, Susan Segal, "Coast Calendar", Coast Magazine, October 2011:

     The annual summer concert series is marking its decaversary by bringing back blink-182, the inaugural artist from the first Honda Civic Tour in 2001, along with My Chemical Romance, for a 40-plus date nationwide.

Synonyms

• decennial, tin anniversary (informal)