1. The spouse of one's grandparent's sibling's grandchild.
2. The grandchild of one's grandparent-in-law's sibling.
My second cousin-in-law is a good person.
by Elivaldeq November 24, 2019
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Second-cousin-eight-times-removed (2C8R).
My second-cousin-8X-removed is a good person.
by N8953SW June 27, 2021
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