indistinguishable

//ˌɪndɪˈstɪŋɡwɪʃəbl//
C1Frequency Level 12Formal
Visual representation of indistinguishable

Adjective

indistinguishableCanonical form
more indistinguishableComparative
most indistinguishableSuperlative
1

So similar or alike that it is impossible to tell the difference between them.

The twins are indistinguishable from each other.

2

Not able to be identified as different or distinct from something else.

The twins are indistinguishable from each other.