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

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

Living being that has zero parents, zero grandparents, zero great-grandparents and four great-great-grandparents in common with other living beings.
double-third-cousin.
by Simaduria July 26, 2024

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

1- Stepgrandparent's cousin.
2- Grandparent's stepcousin.
3- Stepcousin's granchild.
4- Cousin's stepgrandchild.
2- Grandparent's stepcousin.
3- Stepcousin's granchild.
4- Cousin's stepgrandchild.
My step-first-cousin-twice-removed is a good person.
by ZURB981634 February 10, 2022

1. The spouse of one's grandparent's sibling's child.
2. The child of one's grandparent-in-law's sibling.
2. The child of one's grandparent-in-law's sibling.
My cousin-pibling-in-law is a good person.
by Elivaldeq November 24, 2019

Second-cousin-ten-times-removed (2C10R).
My second-cousin-10X-removed is a good person.
by N8953SW June 26, 2021
