Get the great-cousin-niblingmug. Child of their maternal first cousin’s child with the paternal first cousin’s child or double-first cousin’s grandchild.
My double-great-cousin-nibling is a good person.
by Hgcloziw November 23, 2019
Get the double-great-cousin-niblingmug. 
Get the half-great-niblingmug. Nibling - Noun
Nibling is a term used for nieces and nephews without an associated gender (intersex, non binary, etc)
It can also be used as a plural for multiple nieces and nephews without the need to say both
Nibling is a term used for nieces and nephews without an associated gender (intersex, non binary, etc)
It can also be used as a plural for multiple nieces and nephews without the need to say both
by ABigFatAirAtom September 19, 2022
Get the Niblingmug. My nibling-in-law is a good person.
by KNN128 June 15, 2021
Get the nibling-in-lawmug. 
Get the half-cousin-niblingmug.