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 07, 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 03, 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

Parent's half-sibling's child. Has among themselves; different two parents, one grandparent in common and different three grandparents.
My half-cousin is a good person.
by Usery May 02, 2021
