inimical \ih-NIM-ih-kul\ (adjective) – 1 : Having the disposition or temper of an enemy; unfriendly; unfavorable. 2 : Opposed in tendency, influence, or effects; antagonistic; adverse.

“The gods did not care — or rather, were inimical. Beyond question, they were inimical to him.” — Gene Wolfe, ‘Litany of the Long Sun’

nimical comes from Late Latin inimicalis, from Latin inimicus, unfriendly, adverse, hostile, from in-, not + amicus, friendly, well-wishing, favorable to, from amare, to love.