antagonistic

adjective

1. 1

   incapable of harmonious association

2. 2

   used especially of drugs or muscles that counteract or neutralize each other's effect

3. 3

   arousing animosity or hostility

   his antagonistic brusqueness

   Europe was antagonistic to the Unites States

4. 4

   characterized by antagonism or antipathy

   slaves antagonistic to their masters

   antipathetic factions within the party

5. 5

   indicating opposition or resistance