Someone who, in relation to others, has zero parents, zero grandparents and six great-grandparents in common.
Triple-2C:
Person who, in relation to the other person, has zero parents, zero grandparents and six great-grandparents in common.
My triple-second-cousin is a good person.
Living being that has zero parents, zero grandparents and six great-grandparents in common with other living beings.
triple-second-cousin.
Sesqua-2C:
Person who, in relation to the other person, has zero parents, zero grandparents and seven great-grandparents in common.
My sesqua-second-cousin is a good person.
Second cousin's great-granddaughter.
My second great-great-cousin-niece is a good person.
Second-cousin-seven-times-removed (2C7R).
My second-cousin-7X-removed is a good person.
Someone who, in relation to others, has zero parents, zero grandparents and four great-grandparents in common.