fifth-cousin-6X-removed

Fifth-cousin-six-times-removed (5C6R).

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

half-first cousin-nephew

Half-first cousin's son.

My half-first cousin-nephew is a good boy.

third-cousin-7X-removed

Third-cousin-seven-times-removed (3C7R).

My third-cousin-7X-removed is a good person.

irregular-quindecuple-fourth-cousin

Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-nine great-great-great-grandparents in common.

Irregular-quindecuple-fourth-cousin.

irregular-quattuordecuple-fourth-cousin

Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-seven great-great-great-grandparents in common.

Irregular-quattuordecuple-fourth-cousin.

sesqui-first cousin-aunt

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

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

step-cousin-nephew

1. The grandson of one's parent's stepsibling.
2. The stepgrandson of one's parent's sibling.
3. The grandson of one's stepparent's sibling.

My step-cousin-nephew is a good person.