indistinguishable
US /ˌɪn.dɪˈstɪŋ.ɡwɪ.ʃə.bəl/
UK /ˌɪn.dɪˈstɪŋ.ɡwɪ.ʃə.bəl/

1.
indistinguibile, identico
not able to be identified as different or distinct
:
•
The twins were almost indistinguishable.
I gemelli erano quasi indistinguibili.
•
The fake banknotes were indistinguishable from the real ones.
Le banconote false erano indistinguibili da quelle vere.