Characterized by or arising from emulation or imitation.

Roget 708: opposing, opposed etc. v.; adverse, antagonistic; contrary etc. 14; at variance etc. 24; at issue, at war with.    unfavorable, unfriendly; hostile, inimical, cross, unpropitious.    in hostile array, front to front, with crossed bayonets, at daggers drawn; up in arms; resistant etc. 719.    competitive, emulous.    ... show more

Eager to surpass others.

synonym: rivalrous.