untie

a gender-fluid term for the relative of a sibling's child (uncle-auntie)L
"Brandon, your untie (mother's sibling) is here!"
by M^V August 01, 2022
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chibling

stands for "child of my sibling", a gender-fluid term

"chib" for short
"I took my chibling (child of my sibling) to Lollapalooza last week! My sister was so jealous."
by M^V August 01, 2022
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