inopportune adj. + Add to list US //ˌɪˌnɑpɝˈtun// UK //ɪnɒpətjˈuːn// in·op·por·tune AntonymsEtymology Antonyms opportuneOriginLATinopportūnus→ENinopportune From Latin inopportūnus. By surface analysis, in- + opportune.