| a. | 1. | Opposing in combat, combating; contending or acting against; |
| Adj. | 1. | antagonistic - indicating opposition or resistance Synonyms: counter |
| 2. | antagonistic - characterized by antagonism or antipathy; "slaves antagonistic to their masters"; "antipathetic factions within the party" Synonyms: antipathetic, antipathetical | |
| 3. | antagonistic - arousing animosity or hostility; "his antagonizing brusqueness"; "Europe was antagonistic to the Unites States" Antonyms: conciliative, conciliatory - overcoming animosity or hostility; "spoke in a conciliating tone"; "a conciliatory visit" | |
| 4. | antagonistic - used especially of drugs or muscles that counteract or neutralize each other's effect Synonyms: incompatible Antonyms: interactive, synergistic - used especially of drugs or muscles that work together so the total effect is greater than the sum of the two (or more) | |
| 5. | antagonistic - opposing or neutralizing or mitigating an effect by contrary action Synonyms: counteractive | |
| 6. | antagonistic - incapable of harmonious association |