adj 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.
INDISTINGUISHABLE
Meaning of INDISTINGUISHABLE in English
Webster English vocab. Английский словарь Webster. 2012