A first cousin that shares one grandparent instead of both grandparents like a regular first cousin.
My grandpa isn’t related to me, but my grandma is meaning that my first cousins are my half cousins.
by AntiCircumcisionMan November 7, 2020


Half-3C:
1- Parent's half-second-cousin's child.
2- Grandparent's half-first-cousin's grandchild.
3- Great-grandparent's half-sibling's great-grandchild.
4- Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and one great-great-grandparent in common.
1- Parent's half-second-cousin's child.
2- Grandparent's half-first-cousin's grandchild.
3- Great-grandparent's half-sibling's great-grandchild.
4- Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and one great-great-grandparent in common.
My half-third-cousin is a good person.
by Gerald128 May 17, 2021

My half-great-cousin-niece is a good person.
by Gtopql November 23, 2019

My half-first-cousin-once-removed is a good person.
by ZJO8738 October 3, 2021

1- Child of parent's maternal half-sibling and of parent's paternal half-sibling at the same time.
2- Child of parent's half-sibling and of other parent's half-sibling at the same time.
3- Double-half-pibling's child / Two parents's half-nibling.
4- Person who, in relation to the other person, has zero parents and two grandparents on the same side (maternal or paternal) or two grandparents from different sides (one maternal grandparent and one paternal grandparent).
5- Double-half-cousin.
6- Double-half-1C.
2- Child of parent's half-sibling and of other parent's half-sibling at the same time.
3- Double-half-pibling's child / Two parents's half-nibling.
4- Person who, in relation to the other person, has zero parents and two grandparents on the same side (maternal or paternal) or two grandparents from different sides (one maternal grandparent and one paternal grandparent).
5- Double-half-cousin.
6- Double-half-1C.
My double-half-first-cousin is a good person.
by TAYLORGLOSS October 21, 2021

Child of their parent’s half-sibling with their other parent’s half-sibling or the child of their mother's maternal half-sibling with mother's paternal half-sibling or the child of their father's maternal half-sibling with father's paternal half-sibling.
My double-half-first cousin is a good person.
by Mr. Jacov November 23, 2019
