The grandson-in-law of one's spouse's sibling.
My co-great-nephew-in-law is a good person.
by Elivaldeq November 24, 2019
Get the co-great-nephew-in-lawmug. 
Get the step-co-nephew-in-lawmug. My nephew-in-law is a good person.
by KOBO8956 September 22, 2021
Get the nephew-in-lawmug. The son-in-law of one's spouse's sibling.
My co-nephew-in-law is a good person.
by Elivaldeq November 24, 2019
Get the co-nephew-in-lawmug. 
Spouse's nibling's husband.
My nephew-by-marriage-in-law is a good person.
by NSBC968755 February 25, 2023
Get the nephew-by-marriage-in-lawmug.