Inimical

a.	1.
	1.	Having the disposition or temper of an enemy; unfriendly; unfavorable; - chiefly applied to private, as hostile is to public, enmity.
	2.	Opposed in tendency, influence, or effects; antagonistic; inconsistent; incompatible; adverse; repugnant. We are at war with a system, which, by its essence, is inimical to all other governments. - Burke.

Adj.

1.

inimical - not friendly; "an unfriendly act of aggression"; "an inimical critic" Synonyms: unfriendly

adversary, adversative, adversive, aggressive, alien, anti, antipathetic, antithetic, antonymous, at cross-purposes, balancing, battling, bellicose, belligerent, bloodthirsty, bloody, bloody-minded, breakaway, chauvinist, chauvinistic, chill, chilly, clashing, cold, combative, compensating, competitive, con, conflicting, confronting, contentious, contradicting, contradictory, contradistinct, contrapositive, contrarious, contrary, contrasted, converse, cool, counter, counteractant, counteracting, counteractive, counterbalancing, counterpoised, countervailing, counterworking, cranky, cross, crotchety, dead against, detrimental, difficult, disaccordant, discordant, discrepant, dissentient, dissident, enemy, eyeball to eyeball, ferocious, fierce, fighting, fractious, frosty, full of fight, hard, harmful, hawkish, icy, ill, in opposition, incompatible, inconsistent, inhospitable, inverse, jingo, jingoish, jingoist, jingoistic, martial, militant, militaristic, military, miserable, negative, nonconformist, noncooperative, not easy, obstinate, obverse, offensive, opponent, opposing, opposite, oppositional, oppositive, oppugnant, overthwart, perverse, pugnacious, quarrelsome, reactionary, recalcitrant, refractory, renitent, repugnant, resistant, reverse, revolutionary, rigorous, rival, saber-rattling, sanguinary, sanguineous, savage, scrappy, sinister, soldierlike, soldierly, squared off, strained, stressful, tense, trigger-happy, troublesome, troublous, truculent, trying, unamiable, unamicable, uncooperative, uncordial, unfavorable, unfriendly, ungenial, unharmonious, unpacific, unpeaceable, unpeaceful, unpropitious, unsociable, untoward, warmongering, warring, wretched