Main Entry: an·tag·o·nis·tic

Pronunciation: \(ˌ)an-ˌtag-ə-ˈnis-tik\

Function: adjective

1 : characterized by or resulting from antagonism <antagonistic antibiotics>
2 : 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