co-great-pibling-in-law
The spouse of one's grandparent-in-law's sibling.
My co-great-pibling-in-law is a good person.
great-pibling-in-law
1. The spouse of one's grandparent's sibling.
2. The sibling of one's grandparent-in-law.
2. The sibling of one's grandparent-in-law.
My great-pibling-in-law is a good person.