indistinguishable Meaning, Definition & Usage

  1. adjective satellite exactly alike; incapable of being perceived as different
    identical.
    • rows of identical houses
    • cars identical except for their license plates
    • they wore indistinguishable hats
  2. adjective not capable of being distinguished or differentiated
    undistinguishable.
    • 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

WordNet

In`dis*tin"guish*a*ble adjective
Definitions
  1. Not distinguishable; not capable of being perceived, known, or discriminated as separate and distinct; hence, not capable of being perceived or known; as, in the distance the flagship was indisguishable; the two copies were indisguishable in form or color; the difference between them was indisguishable.

Webster 1913