grandnibling 

Sibling's grandchild.

My grandnibling is a good person.

grandnibling by Mr. Jacov November 23, 2019

grandnibling 

Sibling's grandchild.

I have 78 grandniblings (39 grandnieces and 39 grandnephews).

grandnibling by Gerald128 April 6, 2021

grandnibling 

Sibling's grandchild.

My grandnibling is a good person.

grandnibling by ZURB981634 February 10, 2022

grandnibling 

Sibling's grandchild.

Grandnibling.

grandnibling by Simaduria July 26, 2024

grandnibling-in-law 

1. The grandchild-in-law of one's sibling.
2. The grandchild of one's spouse's sibling.

My grandnibling-in-law is a good person.

grandnibling-in-law by Elivaldeq November 24, 2019

grandnibling-in-law 

1- Grandnibling's spouse.
2- Spouse's grandnibling.

My grandnibling-in-law is a good person.

grandnibling-in-law by KNN128 June 15, 2021

grandnibling-by-marriage-in-law

Spouse's grandnibling's spouse.

My grandnibling-by-marriage-in-law is a good person.

grandnibling-by-marriage-in-law by NSBC968755 February 25, 2023