Spouse's great-grandnibling's wife.
My co-great-grandniece-in-law is a good person.
by Wonbig October 13, 2021
Get the co-great-grandniece-in-lawmug. by Dem-Definitions May 28, 2018
Get the your great-grannymug. 
Get the great-great-grandauntmug. Spouse's great-grandnibling.
My great-grandnibling-by-marriage is a good person.
by NSBC968755 February 25, 2023
Get the great-grandnibling-by-marriagemug. 
Get the half-great-great-nephewmug. another way of telling someone that you want them out of your conversation because they were not initially part of it and hence don't know even what the convo is about when they butt in
by Sexydimma March 28, 2015
Get the you came from a great cosmic eggmug. 
Get the great-great-great-granddaughtermug.