1. questionable Equivocal (L. equus, equal, and vox, voice, word) denotes that which may equally well be understood in either of two or more ways. Ambiguous (L. ambi, around, and ago, drive, lead) signif Synonyms: equivocal, ambiguous, enigmatical, indistinct, questionable, doubtful, indefinite, obscure, suspicious, dubious, indeterminate, perplexing, uncertain, enigmatic Antonyms: certain, evident, lucid, perspicuous, unequivocal, clear, indisputable, manifest, plain, unquestionable, distinct, indubitable, obvious, unambiguous, unquestioned