uncertain

uncertain (Ambiguous), adjective amphibolic, enigmatical, inconclusive, indeterminate, indistinct, mistakable, mysterious, mystifying, nebulous, not certain, not clear, not plain, obscure, occult, open to various interrretations, perplexing, puzzling, unclear, unintelligible, vague
Foreign phrases: Ubi jus incertum, ibi jus nullum.Where the law is uncertain, there is no law. Res est misera ubi jus est vagum et incertum. It is a sorry state of affairs when law is vague and mutable. Incerta pro nullis habentur. Uncertain things are regarded as nothing.

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uncertain (Questionable), adjective arguable, contestable, contingent, controvertible, debatable, disputable, doubtful, dubious, equivocal, insecure, liable to question, not sure, open to discussion, open to question, precarious, problematic, problematical, provisional, suspicious, tentative, unconfirmed, undecided, unreliable, unsettled, unsure, untrustworthy

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See also: ambiguous, approximate, capricious, casual, conditional, controversial, debatable, disputable, dubious, elusive, equivocal, fallible, hesitant, inconclusive, inconvincible, indefinite, indeterminate, insecure, intangible, irresolute, leery, moot, mutable, nebulous, noncommittal, pending, precarious, problematic, questionable, reluctant, shifting, skeptical, speculative, sporadic, subject, suspicious, unclear, unconfirmed, undecided, undependable, unforeseeable, unpredictable, unsettled, untrustworthy, vague