1- Grandparent's sibling's child / Parent's first-cousin.
2- Parent's sibling's grandchild / First-cousin's child.
2- Parent's sibling's grandchild / First-cousin's child.
My first-cousin-once-removed is a good person.
by ZJO8738 October 3, 2021

Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-three great-great-great-grandparents in common.
Irregular-duodecuple-fourth-cousin.
by Cerejini May 21, 2024

Spouse's fourth-cousin's spouse.
My co-fourth-cousin-in-law is a good person.
by JAMP12 September 21, 2021

by urmom206 January 6, 2024

1- Child of uncle (father's brother) and of aunt (mother's sister) at the same time.
2- Child of uncle (mother's brother) and of aunt (father's sister) at the same time.
3- Someone who, in relation to others, has zero parents and four grandparents in common.
2- Child of uncle (mother's brother) and of aunt (father's sister) at the same time.
3- Someone who, in relation to others, has zero parents and four grandparents in common.
Double-first-cousin.
by Zabombini October 5, 2024

1- Aunt (parent's sister)'s child and uncle (other parent's brother)'s child simultaneously.
2- Living being that has zero parents and four grandparents in common with another living being.
2- Living being that has zero parents and four grandparents in common with another living being.
Double-cousin.
by Simaduria July 26, 2024

by Theholyscumxx November 6, 2017
