co-first-cousin-twice-removed-in-law

Spouse's first-cousin-twice-removed's spouse.

My co-first-cousin-twice-removed-in-law is a good person.

cousin-aunt

Parent's female first cousin.

My cousin-aunt is a good person.

Cousin Stacy

A normal cousin but with a boy's name; like Stacy

My cousin's name is Stacy. Why does your cousin have a boys name? She is a Cousin Stacy

double-first cousin-nephew

Son of their maternal first cousin with the paternal first cousin or double-first cousin’s son.

My double-first cousin-nephew is a good person.

sesqui-cousin-aunt

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

My sesqui-cousin-aunt is a good person.

first step-cousin-nibling

1. The grandchild of one's parent's stepsibling.
2. The stepgrandchild of one's parent's sibling.
3. The grandchild of one's stepparent's sibling.

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

third-cousin-6X-removed

Third-cousin-six-time-removed (3C6R).

My third-cousin-6X-removed is a good person.