inimical

 
Pronunciation: /ɪˈnɪmɪk(ə)l/

adjective

  • tending to obstruct or harm: the policy was inimical to Britain’s real interests
  • unfriendly; hostile: an inimical alien power

Derivatives

inimically

adverb

Origin:

early 16th century: from late Latin inimicalis, from Latin inimicus (see enemy)