Origin: 1585–95; < L
hostīlis, equiv. to
hostis enemy (
see host 2 ) +
-īlis -ile 
Related forms: hos⋅tile⋅ly, adverb
Synonyms:
1. warlike, aggressive. 2. adverse, averse, contrary. Hostile, inimical indicate that which characterizes an enemy or something injurious to one's interests. Hostile applies to the spirit, attitude, or action of an enemy: They showed a hostile and menacing attitude. Inimical applies to an antagonistic or injurious tendency or influence: Their remarks were inimical to his reputation.
Antonyms:
1, 2. friendly. 3. sympathetic.