double-cousin 

1- Child of parent’s full sister and of other parent’s full brother at the same time.
2- Child of paternal aunt (father's sister) and of maternal uncle (mother's brother) at the same time.
3- Child of maternal aunt (mother's sister) and of paternal uncle (father's brother) at the same time.
4- Nibling (biological) of mother and of father at the same time.
5- Two parents's nibling.
6- Person who, in relation to the other person, has zero parents and four grandparents in common.
7- Double-first-cousin.
8- Double-1C.

My double-cousin is a good person.

double-cousin by Peter12369 October 21, 2021

first-cousin 

1- Pibling's child. / Parent's nibling.
2- Person who, in relation to the other person, has zero parents and two grandparents (maternal or paternal) in common.
3- Cousin.
4- 1C.

My first-cousin is a good person.

first-cousin by Peter12369 October 21, 2021

first-cousin-once-removed 

1- Parent's cousin.
2- Cousin's child.

My first-cousin-once-removed is a good person.

first-cousin-once-removed by ZURB981634 February 10, 2022

first-cousin-twice-removed 

1- Grandparent's cousin.
2- Cousin's grandchild.

My first-cousin-twice-removed is a good person.

first-cousin-twice-removed by ZURB981634 February 10, 2022

first-cousin-thrice-removed 

1- Great-grandparent's cousin.
2- Cousin's great-grandchild.

My first-cousin-thrice-removed is a good person.

first-cousin-thrice-removed by ZURB981634 February 10, 2022

first-cousin-four-times-removed 

1- Great-great-grandparent's cousin.
2- Cousin's great-great-grandchild.

My first-cousin-four-times-removed is a good person.

first-cousin-four-times-removed by ZURB981634 February 10, 2022

lil cousin

Black family slang for a cousin that is younger than you.

Aye don’t talk to my lil cousin like that fam.

lil cousin by Keionmehki February 12, 2022