indefinablePronunciation: /ɪndɪˈfʌɪnəb(ə)l/Translate indefinable | into Italian Definition of indefinable adjective not able to be defined or described exactly:she reminds me, in some indefinable way, of my grandmotherDerivatives indefinably adverb [as submodifier]:his indefinably foreign accentindefinable in other Oxford dictionaries Definition of indefinable in the US English dictionary