indistinguishable

US /ˌɪn.dɪˈstɪŋ.ɡwɪ.ʃə.bəl/
UK /ˌɪn.dɪˈstɪŋ.ɡwɪ.ʃə.bəl/
"indistinguishable" picture
1.

indiscernable, identique

not able to be identified as different or distinct

:
The twins were almost indistinguishable.
Les jumeaux étaient presque indiscernables.
The fake banknotes were indistinguishable from the real ones.
Les faux billets étaient indiscernables des vrais.