Synonyms of indistinguishable

Adjective

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"

Definition and meaning of indistinguishable (Dictionary)