The grandchild-in-law of one's spouse's sibling.
My co-great-nibling-in-law is a good person.
by Elivaldeq November 24, 2019
Get the co-great-nibling-in-lawmug. 
Get the half-niblingmug. 
Get the great-niblingmug. Second cousin's great-grandchild.
by Gtopql November 23, 2019
Get the second great-great-cousin-niblingmug. 
Get the half-great-great-great-niblingmug. nibling-in-law.
by Simaduria July 26, 2024
Get the nibling-in-lawmug. My half-first great-cousin-nibling is a good person.
by Gtopql November 23, 2019
Get the half-first great-cousin-niblingmug.