half-second-cousin

Half-2C:
1- Parent's half-first-cousin's child.
2- Grandparent's half-sibling's grandchild.
3- Person who, in relation to the other person, has zero parents, zero grandparents and one great-grandparent in common.

My half-second-cousin is a good person.

half-second cousin

Grandparent's half-sibling's grandchild.

My half-second cousin is a good person.

half-second-cousin

1- Half-grandpibling's grandchild.
2- Living being that has zero parents, zero grandparents and one great-grandparent in common with other living beings.

Half-second-cousin.

second cousin-niece

Second cousin's daughter.

My second cousin-niece is a good girl.

step-second-cousin-in-law

1- Step-second-cousin's spouse.
2- Spouse's step-second-cousin.

step-second-cousin-in-law.

sesqui-first cousin-nephew

Sesqui-first cousin’s son.

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

irregular-quintuple-fourth-cousin

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

Irregular-quintuple-fourth-cousin.