undecidablePronunciation: /ʌndɪˈsʌɪdəb(ə)l/Definition of undecidable adjective not able to be firmly established or refuted: the facts of Christ’s existence are ultimately undecidable Logic (of a proposition or theorem) not able to be proved or disproved. Derivatives undecidabilityPronunciation: /-ˈbɪlɪti/ noun undecidable in other Oxford dictionaries Definition of undecidable in the US English dictionary
