Sibling's great-great-granddaughter.
My great-great-great-niece is a good girl.
by Hgcloziw November 23, 2019
Get the great-great-great-niecemug. 
Third cousin's granddaughter.
by Gtopql November 23, 2019
Get the third great-cousin-niecemug. Spouse's nibling's wife.
My niece-by-marriage-in-law is a good person.
by NSBC968755 February 25, 2023
Get the niece-by-marriage-in-lawmug. 
My step-great-niece is a good person.
by Elivaldeq November 24, 2019
Get the step-great-niecemug. First cousin's great-granddaughter.
My great-great-cousin-niece is a good girl.
by Hgcloziw November 23, 2019
Get the great-great-cousin-niecemug.