INDISTINGUISHABLE
Source: 566, 567
indistinguishable. Indistinguishable, a. not to be distinguished
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In′dis‐tin″guish‐a‐ble (?), a. 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.