adj. 25B6; adjective
the two girls were indistinguishable : IDENTICAL, difficult to tell apart, like (two) peas in a pod, like Tweedledum and Tweedledee, very similar, two of a kind.
his words were indistinguishable : UNINTELLIGIBLE, incomprehensible, hard to make out, indistinct, unclear; inaudible.
unalike, clear.