hostile

(noun) troops belonging to the enemy's military forces. Example: "The platoon ran into a pack of hostiles."

(adj) characterized by enmity or ill will. Synonyms: hostile (vs. amicable). Examples: "A hostile nation." "A hostile remark." "Hostile actions."

(adj) not belonging to your own country's forces or those of an ally. Synonyms: hostile (vs. friendly). Example: "Hostile naval and air forces."

(adj) impossible to bring into friendly accord. Example: "Hostile factions."

(adj) very unfavorable to life or growth. Synonyms: uncongenial, unfriendly. Examples: "A hostile climate." "An uncongenial atmosphere." "An uncongenial soil." "The unfriendly environment at high altitudes."

(adj) unsolicited and resisted by the management of the target company ( used of attempts to buy or take control of a business). Examples: "Hostile takeover." "Hostile tender offer." "Hostile bid."