the.com/rivals
proof you can hate someone's guts and still need them to become anything at all.
means people or things locked in competition so intense they end up defining each other.
from from latin rivalis, meaning one who shares a river with another — because upstream neighbors fought over water first, feelings second.
latin rootliterally means someone who shares your stream
paradoxrivals often improve each other more than allies do
sports sciencerivalries measurably boost performance via arousal, not just spite