D defs.my
Entry 1 sense Webster, 1913

Indistinguishable

/(ĭn`dĭs*tĭṉ"gwĭsh*ȧ*b'l)/ · In·dis·tin·guish·a·ble · IPA /[ˌɪn.dɪˈstɪŋ.ɡwɪ.ʃə.bl̩]/
01 a. Not distinguishable; not capable of being perceived, known, or discriminated as separate and distinct; hence, not capable of being perceive…
  1. 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.