nibling

[ nib-ling ]

1. a child of one’s sibling, such as a niece or nephew, especially used in the plural or as a gender-neutral term: My nibling started their new job last week.

   I generally get along with kids quite well—my niblings ask me to play whenever I visit my sister.

   My nibling started their new job last week.

Word History and Origins

Origin of nibling¹

n(ephew) ( def ) or n(iece) ( def ) + (s)ibling ( def ); coined by U.S. linguist Samuel E. Martin (1924–2009) in 1951