say it: in-di-STING-gwi-shuh-buhl
indistinguishable is an adjective meaning "exactly alike; incapable of being perceived as different". It carries 2 recorded senses.
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”
Definitions, synonyms and semantic relations for indistinguishable come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.