unattainablePronunciation: /ʌnəˈteɪnəb(ə)l/Translate unattainable | into French | into Italian Definition of unattainable adjective not able to be reached or achieved:an unattainable goalDerivatives unattainableness noun unattainably adverb unattainable in other Oxford dictionaries Definition of unattainable in the US English dictionary