Sibkids 

The term used for your nieces and nephews.

This weekend my brother is visiting and bringing my sibkids.

Sibkids by Kitty&Cat February 3, 2019

sibkid 

The child of your sibling. A gender-neutral term for a niece or nephew.

I'm giving all my sibkids experience gifts for their birthdays this year.

sibkid by Raredog September 27, 2018

Sibkid 

A gender-neutral term for the child of your siblings. Use in place of “niece” or “nephew.” Easily pluralized to “sibkids.”

I had a great time with my sibkids last Thanksgiving.
I took my sibkid to the mall to pick out their new clothes.

Sibkid by Roseola December 30, 2022