Great-great-grandparent's sibling's great-great-grandchild.
by Mr. Jacov November 23, 2019
Get the fourth cousinmug. Fourth-cousin-ten-times-removed (4C10R).
My fourth-cousin-10X-removed is a good person.
by N8953SW June 26, 2021
Get the fourth-cousin-10X-removedmug. 
Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty great-great-great-grandparents in common.
Decuple-fourth-cousin.
by Cerejini May 21, 2024
Get the decuple-fourth-cousinmug. Fourth-cousin-thrice-removed (4C3R).
My fourth-cousin-3X-removed is a good person.
by N8953SW June 26, 2021
Get the fourth-cousin-3X-removedmug. 13.5-tuple-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-seven great-great-great-grandparents in common.
My 13.5-tuple-fourth-cousin is a good person.
by ABGR June 9, 2021
Get the 13.5-tuple-fourth-cousinmug. 14.5-tuple-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-nine great-great-great-grandparents in common.
My 14.5-tuple-fourth-cousin is a good person.
by ABGR June 9, 2021
Get the 14.5-tuple-fourth-cousinmug.