granduncle-in-law

1. The husband of one's grandparent's sister.
2. The brother of one's grandparent-in-law.
My granduncle-in-law is a good person.
by Elivaldeq November 24, 2019
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co-granduncle-in-law

My co-granduncle-in-law is a good person.
by Wonbig October 13, 2021
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My granduncle-by-marriage-in-law is a good person.
by NSBC968755 February 25, 2023
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4X-granduncle

My 4X-granduncle is a good person.
by KL198 June 25, 2021
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