3C:
1- Parent's second-cousin's child.
2- Grandparent's first-cousin's grandchild.
3- Great-grandparent's full sibling's great-grandchild.
4- Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and two great-great-grandparents in common.
My third-cousin is a good person.
by Gerald128 May 15, 2021
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Septuple-3C:
Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and fourteen great-great-grandparents in common.
My septuple-third-cousin is a good person.
by Gerald128 May 15, 2021
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Third-cousin-thrice-removed (3C3R).
My third-cousin-3X-removed is a good person.
by N8953SW June 27, 2021
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Something less than the best. Something or a decision that's quite stupid but not totally stupid. An idiotic move that can be resolved. E.g. Your decision was third quadrant at best.
Your decision was third quadrant at best.
by Expendable80 January 18, 2017
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Third-cousin-six-time-removed (3C6R).
My third-cousin-6X-removed is a good person.
by N8953SW June 27, 2021
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