adverse

adjective

1. unfavorable or antagonistic in purpose or effect: adverse criticism.
2. opposing one’s interests or desire: adverse circumstances.
3. being or acting in a contrary direction; opposed or opposing: adverse winds.
4. opposite; confronting: the adverse page.

adjective

1. antagonistic or inimical; hostileadverse criticism
2. unfavourable to one’s interestsadverse circumstances
3. contrary or opposite in direction or positionadverse winds
4. (of leaves, flowers, etc) facing the main stemCompare averse (def. 2)

adj.

late 14c., “contrary, opposing,” from Old French avers (13c., Modern French adverse) “antagonistic, unfriendly, contrary, foreign” (e.g. gent avers “infidel race”), from Latin adversus “turned against, turned toward, fronting, facing,” figuratively “hostile, adverse, unfavorable,” past participle of advertere, from ad- “to” (see ad-) + vertere “to turn” (see versus). Related: Adversely.