Thesaurus

Synonyms for Hostile include:

abominable, admonishing, admonitory, adverse, aggressive, antagonistic, antipathetic, antipathetical, antipersonnel, assaultive, assertive, at loggerheads, attacking, bad, bare, barren, battleful, beetle-browed, bellicose, belligerent, bitter, bleak, chilly, combative, competitive, convulsive, cool, critical, desert, desolate, detestable, dirty, disapproving, discriminatory, execrable, ferocious, fierce, fighting, furious, godforsaken, hard-hitting, harmful, hateful, hawkish, head-on, high-pressure, hit-and-run, hostile, hot, ill, in-your-face, inauspicious, incompatible, inconsistent, incursive, inhospitable, inimical, invading, invasive, invidious, irreconcilable, knock-down-and-drag-out, knockdown-dragout, lashing, lurid, marauding, militant, negative, obstreperous, odious, offensive, on the offensive, opponent, opposing, predatory, pugnacious, raging, raiding, rampageous, rapacious, raptorial, ravening, reproachful, reproving, rough, ruffianly, savage, scowling, scrappy, self-asserting, self-assertive, slam-bang, stark, stormy, tempestuous, terrorist, tip-and-run, tough, truculent, uncomplimentary, uncongenial, uncordial, undesirable, unfavorable, unfavourable, unfriendly, unlovable, unneighborly, unneighbourly, unpeaceable, unpeaceful, unreconcilable, unsociable, untoward, violent, vulturine, vulturous, war-ridden, warlike, warring, waste, water-washed, wild, windswept

hostile is a ADJ.