veggieversary 

The anniversary of the day a person decided to become vegetarian/vegan.

Me: Woohoo, it's my 5-year veggieversary today!
Brother: What the hell is a veggieversary?
Me: Pretty much exactly what it sounds like.

veggieversary by Veggie Tales November 1, 2013

Vegeversary 

Vegetarian Anniversary!

Wow, it's my two year Vegeversary! Time sure does fly!

Vegeversary by Ayyyyyyyyyyyyyyyyyyyyyyyyg November 29, 2010

veggiversary 

the anniversary of becoming a vegetarian.

girl:today is my one year veggiversary!

veggiversary by ashalay73 March 8, 2009

Vegiversary

The annaversery of when you first became a vegatarian

Today is the day Jane became a vegatarian and it's been a year since that day so today is her one year vegiversary

Vegiversary by Princess the anonymous June 5, 2018