Rival

[Jason Yan]

someone you feel the need to [compete] against in every [aspect] of life. someone who is going for the same goal as you. [exp]:girl/guy, job.

[Tanya Shivari]

Your enemy. The one you live to defeat but for some reason enjoy their existence. They give you purpose in your usually [meaningless] life.

A [rival] is so important that [Sylvester Stallone] requested about it.

[Kit]

A person or thing competing with another for the same objective or for superiority in the same field of activity.

[Sommer]

[Growing up] you had opponents, back when you could break each others bones. Then, opponents became rivals in college. Really rivals and rivalries are for [college kids] and the [ancient Greeks].