an·tag·o·nis·tic adj \(ˌ)an-ˌtag-ə-ˈnis-tik\
: characterized by or resulting from antagonism <antagonistic antibiotics>
: relating to or being muscles that are antagonists <skeletal muscles arranged in antagonistic pairs>
—an·tag·o·nis·ti·cal·ly \-ti-k(ə-)lē\ adverb
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