"antagonistic" in the adjective sense
1. antagonistic, counter
indicating opposition or resistance
2. antagonistic, antipathetic, antipathetical
characterized by antagonism or antipathy
"slaves antagonistic to their masters"
"antipathetic factions within the party"
3. antagonistic
arousing animosity or hostility
"his antagonistic brusqueness"
"Europe was antagonistic to the Unites States"
4. antagonistic, incompatible
used especially of drugs or muscles that counteract or neutralize each other's effect
5. antagonistic
incapable of harmonious association
Source: WordNet® (An amazing lexical database of English)
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