half-first cousin-uncle

Parent's male half-first cousin.

My half-first cousin-uncle is a good person.

sesqui-first cousin-pibling

Child of their grandparent’s half-sibling with the other grandparent’s full sibling.

My sesqui-first cousin-pibling is a good person.

irregular-double-first-cousin

1- Child of uncle (father's brother) and of half-aunt (mother's half-sister) at the same time.
2- Child of uncle (mother's brother) and of half-aunt (father's half-sister) at the same time.
3- Child of aunt (father's sister) and of half-uncle (mother's half-brother) at the same time.
4- Child of aunt (mother's sister) and of half-uncle (father's half-brother) at the same time.
5- Someone who, in relation to others, has zero parents and three grandparents in common.

Irregular-double-first-cousin.

first-cousin-9X-removed

First-cousin-nine-times-removed (1C9R).

My first-cousin-9X-removed is a good person.

first cousin-pibling-in-law

1. The spouse of one's grandparent's sibling's child.
2. The child of one's grandparent-in-law's sibling.

My first cousin-pibling-in-law is a good person.

first step-cousin-uncle

1. The son of one's grandparent's stepsibling.
2. The stepson of one's grandparent's sibling.
3. The son of one's stepgrandparent's sibling.

My first step-cousin-uncle is a good person.

double-first great-cousin-uncle

Son of their great-grandparent’s full sibling with the other great-grandparent’s full sibling.

My double-first great-cousin-uncle is a good person.