step-cousin-nibling
1. The grandchild of one's parent's stepsibling.
2. The stepgrandchild of one's parent's sibling.
3. The grandchild of one's stepparent's sibling.
2. The stepgrandchild of one's parent's sibling.
3. The grandchild of one's stepparent's sibling.
step-cousin-nibling by Elivaldeq November 24, 2019