From Longman Dictionary of Contemporary Englishindistinguishablein‧dis‧tin‧guish‧a‧ble /ˌɪndɪˈstɪŋɡwɪʃəbəl/ ●○○ adjective SAMEthings that are indistinguishable are so similar that you cannot see any difference between themindistinguishable from an artificial material that is almost indistinguishable from real silk► see thesaurus at same
Examples from the Corpus
indistinguishable• In the storm the sky and sea were indistinguishable.• It was claimed that Russian and American defence policies were indistinguishable.• He tasted the cheaper wine and found it indistinguishable from a superior one.indistinguishable from• Africanized bees appear indistinguishable from European bees. 