used especially of drugs or muscles that counteract or neutralize each other's effect
indicating opposition or resistance
characterized by antagonism or antipathy
arousing animosity or hostility
incapable of harmonious association
inclined to help or support; not antagonistic or hostile
characteristic of or befitting a friend
easy to understand or use
troops belonging to or allied with your own military forces
of or belonging to your own country's forces or those of an ally
