__ Rivalry; in-Family Competitiveness
This page is the CodyCross answer for the clue below from Futuristic City , Group 999, Puzzle 3 (Pin Prick Blood Tests).
Question is: __ Rivalry; in-Family Competitiveness
and the answer is: SIBLING
Word Meaning:
SIBLING — A person who shares a parent; one's brother or sister who one shares a parent with.
Definitions from Wiktionary.