Inimical

Part of speech: adjective (a.)

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.