Inimical

in·im·i·cal \'in·'im·i·kel\ adj [LL inimicalis, fr. L inimicus enemy—more at ENEMY] (1573) 1 : being adverse often by reason of hostility or malevolence 2 : a having the disposition of an enemy : HOSTILE b : reflecting or indicating hostility : UNFRIENDLY — in·im·i·cal·ly \·i·k(e-)le\ adv