Merriam-Webster Collegiate Dictionary - hostile

 adjective  Etymology: Middle French or Latin; Middle French, from Latin hostilis, from hostis  Date: 1580  1.  a. of or relating to an enemy ~ fire  b. marked by malevolence a ~ act  c. openly opposed or resisting a ~ critic ~ to new ideas  d.  (1) not hospitable plants growing in a ~ environment  (2) having an intimidating, antagonistic, or offensive nature a ~ workplace  2.  a. of or relating to the opposing party in a legal controversy a ~ witness  b. adverse to the interests of a property owner or corporation management a ~ takeover  • ~ noun  • ~ly adverb