Spouse's relative-without-designation-in-law's spouse.
Co-relative-without-designation-in-law (co-RWD-in-law).
by Kapokapo July 15, 2024
Get the co-relative-without-designation-in-lawmug. The granddaughter-in-law of one's spouse's sibling.
My co-great-niece-in-law is a good person.
by Elivaldeq November 24, 2019
Get the co-great-niece-in-lawmug. 
Get the half-co-niece-in-lawmug. 
Spouse's great-grandnibling's husband.
My co-great-grandnephew-in-law is a good person.
by Wonbig October 13, 2021
Get the co-great-grandnephew-in-lawmug. 
Get the co-grandnephew-in-lawmug. 
Get the co-nibling-in-lawmug.