halfiversary

A couple's 6 month anniversary (similar to a half birthday).

Prem and Becky got married on July 11th, so they celebrated their halfiversary on January 11th.

halfiversary by Premdawg January 12, 2011

Halfiversary

Like an Anniversary, but a celebration for six months in a relationship, friendship, etc..

Hey babe, its been six months! Happy Halfiversary!!

Halfiversary by Anonymously Jay October 13, 2016

Holiversary 

The re-occurrence of a holiday, regardless of similar date to previous years, that holds a special meaning to a person because one of the previous celebrations of this holiday involved a major event (i.e. first date, starting a friendship, losing virginity, moving); if the holiday moves, than the "holiversary" moves too

"Dude I'm jewish and don't have any plans for easter, wanna hang out?"
"sorry man, me and my girlfriend are celebrating our holiversary since we met volunteering at a neighborhood easter-egg hunt last year."

Holiversary by Modern Byronic Hero February 28, 2010

halfaversary 

The celebration of a half-year since something important occured.

Katherine: Oh my gosh, Doug, it's August 15th! We started dating on February 15th... do you know what that means?! Today is our halfaversary!
Doug: Oh, that's right. You're dumb, but happy halfaversary.

halfaversary by Eillek Nagrom January 16, 2008

handiversary 

The annual celebration of the first time you pleasured yourself with your hand (AKA jerked it).

I'm going to get myself a new bottle of lotion to celebrate my handiversary.

handiversary by Jam1234567890 February 12, 2014