Adverse1. (a.) Acting in a contrary direction; opposed; as, adverse winds; adverse conditions; a spirit adverse to distinctions of caste.
2. (a.) Opposite.
3. (a.) In hostile opposition to; unfavorable; unpropitious; contrary to one's wishes; unfortunate; calamitous; afflictive; hurtful; as, adverse fates, adverse circumstances, things adverse.
4. (v. t.) To oppose; to resist.
Thesaurus Entries
adversary, adversative, adversive, alien, antagonistic, anti, antipathetic, antithetic, antonymous, at cross-purposes, balancing, clashing, compensating, competitive, con, conflicting, confronting, contradictory, contradistinct, contrapositive, contrarious, contrary, contrasted, converse, counter, counteractive, counterbalancing, counterpoised, countervailing, cross, dead against, deleterious, detrimental, difficult, disaccordant, disadvantageous, discordant, discrepant, dissentient, enemy, eyeball to eyeball, fractious, hard, harmful, hostile, hurtful, impeding, in opposition, inconsistent, inimical, injurious, inverse, miserable, negative, noncooperative, not easy, obstinate, obstructive, obverse, opponent, opposed, opposing, opposite, oppositional, oppositive, oppugnant, overthwart, perverse, prejudicial, recalcitrant, refractory, repugnant, reverse, rigorous, rival, sinister, squared off, stressful, troublesome, troublous, trying, uncooperative, unfavorable, unfriendly, unpropitious, unsatisfactory, untoward, wretched