second great-cousin-nephew

Second cousin's grandson.

My second great-cousin-nephew is a good person.

second-cousin-8X-removed

Second-cousin-eight-times-removed (2C8R).

My second-cousin-8X-removed is a good person.

second-cousin-once-removed

1- Parent's second-cousin.
2- Second-cousin's child.

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

second-cousin-once-removed

1- Great-grandparent's sibling's grandchild / Parent's second-cousin.
2- Grandparent's sibling's great-grandchild / Second-cousin's child.

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

second-cousin-once-removed

1- Parent's second-cousin.
2- Second-cousin's child.

second-cousin-once-removed.

sester-second-cousin

Sester-2C:
Person who, in relation to the other person, has zero parents, zero grandparents and five great-grandparents in common.

My sester-second-cousin is a good person.

sester-second cousin

Child of their parent’s first cousin with their other parent’s sesqui-first cousin or are the child of their parent’s double-first cousin with their other parent’s half-first cousin.

My sester-second cousin is a good person.