indistinguishable
Concise Oxford English Dictionary © 2008 Oxford University Press:
indistinguishable/ɪndɪˈstɪŋɡwɪʃəbl/
▶adjective not able to be identified as different or distinct.
– derivatives
indistinguishably adverb.
indistinguishably adverb.
'indistinguishable' also found in these Oxford entries:

