grand aunt 

Some one who is someones aunt and also their grand mother

That woman is my Grand aunt.

grand aunt by barneynoballz November 17, 2016

GrandCunt 

a name/label used in reference to someone you should have been allowed to call grandmother, BUT because your parent is an AB/DL you are forced to refer to her as a MommyAnn; emphasis on the word mommy. In doing so against your will animosity, hostility, and ill will develop leading to the creation of your term of endearment, GrandCunt.

(1).Some people have a grandmother, others have a grandma, I was forced into having a MommyAnn until the day I revolted, now I have a GrandCunt.
(2).Bootz, "Shoo Fresh you know you rich grandma buy you those dank kicks you need fo school..."
Fresh, "Jigga please! you know I aint got no grandma, I got stuck with a GrandCunt.

GrandCunt by noLIMITsouljagirlz May 14, 2010

4X-grandaunt 

Great-great-great-grandaunt.

My 4X-grandaunt is a good person.

4X-grandaunt by KL198 June 25, 2021

GrandAutismo 

The autistic kids that race through the halls making race car noises that you usually take knee caps from so they crawl around on stubs and now they are just snails

Look it’s a GrandAutismo! LETS TAKE HIS DAMN KNEE CAPS!

GrandAutismo by EMSP420 March 28, 2019

8X-grandaunt 

Great-great-great-great-great-great-great-grandaunt.

My 8X-grandaunt is a good person.

8X-grandaunt by N8953SW June 26, 2021

grandaunt 

Grandparent's sister.

My grandaunt is a good person.

grandaunt by Mr. Jacov November 23, 2019

grandaunt-in-law 

1. The wife of one's grandparent's brother.
2. The sister of one's grandparent-in-law.

My grandaunt-in-law is a good person.

grandaunt-in-law by Elivaldeq November 24, 2019