noun A competitor (person, team, company, etc.) with the same goal as another, or striving to attain the same thing. Defeating a rival may be a primary or necessary goal of a competitor.
Chris is my biggest rival in the 400-metre race.
noun Someone or something with similar claims of quality or distinction as another.
As a social historian, he has no rival.
noun One having a common right or privilege with another; a partner.
adjective Having the same pretensions or claims; standing in competition for superiority.
rival lovers
verb To oppose or compete with.
to rival somebody in love
verb To be equal to, or match, or to surpass another.