asy·ner·gia \ˌāsiˈnərj(ē)ə\noun alsoasyn·er·gy\āˈsinərjē\ (pluralasynergiasalsoasynergies) Etymology: New Latin asynergia, from a- (II) + synergia synergy medicine: lack of coordination (as of muscles) < asynergia results in jerkiness, overaction and imperfect muscle control — C.H.Best & N.B.Taylor > • asy·ner·gic\|āsi|nərjik\adjective