1. The child of one's grandparent's stepsibling.
2. The stepchild of one's grandparent's sibling.
3. The child of one's stepgrandparent's sibling.
My step-cousin-pibling is a good person.
by Elivaldeq November 24, 2019
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Child of their great-grandparent’s half-sibling with the other great-grandparent’s full sibling.
My sesqui-great-cousin-pibling is a good person.
by Hgcloziw November 23, 2019
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