Synonyms of indistinguishable

1. identical, indistinguishable, same (vs. different): usage: exactly alike; incapable of being perceived as different; "rows of identical houses"; "cars identical except for their license plates"; "they wore indistinguishable hats"
2. indistinguishable (vs. distinguishable), undistinguishable: usage: 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"