across adversary adversative adverse adversive against alien antagonistic anti antipathetic antipodal antipode antipodean antipodes antipole antithesis antithetic antithetical antonym antonymous at cross-purposes at opposite extremes back to back balancing clashing compensating competitive con conflicting confronting contra contradictory contradistinct contrapositive contrarious contrariwise contrary contrary to contrast contrasted contrasting converse counter counteractive counterbalance counterbalancing countercheck counterpoint counterpoise counterpoised counterpole counterterm countervailing cross dead against detrimental different differing difficult disaccordant discordant discrepant dissentient dissimilar divergent diverse enemy eyeball to eyeball eyeball-to-eyeball face to face facing foil fractious fronting hard harmful hostile in contact with in contrast with in front of in opposition in opposition to inconsistent independent inimical inverse irreconcilable just opposite miserable negative noncooperative nose to nose not easy obstinate obverse offset on opponent opposed opposing opposite number opposite to oppositional oppositive oppugnant over against overthwart perverse polar polaric polarized poles apart recalcitrant refractory replica repugnant reverse rigorous rival separate setoff sinister squared off stressful the contrary the other side to toward troublesome troublous trying unalike unconnected uncooperative unfavorable unfriendly unlike unpropitious unrelated unsimilar untoward up against upon versus vis-a-vis wretched