Adjective indistinguishable has 2 senses
- identical, indistinguishable - exactly alike; incapable of being perceived as different; "rows of identical houses"; "cars identical except for their license plates"; "they wore indistinguishable hats"
Antonym: different (indirect, via same)
- indistinguishable, undistinguishable - not capable of being distinguished or differentiated; "the two specimens are actually different from each other but the differences are almost indistinguishable"; "the twins were indistinguishable"; "a colorless person quite indistinguishable from the colorless mass of humanity"
Antonyms: distinguishable, differentiable, discriminable
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