indistinguishable

adjective

in·​dis·​tin·​guish·​able ˌin-di-ˈstiŋ-gwi-shə-bəl How to pronounce indistinguishable (audio)
-ˈstiŋ-wi-
Synonyms of indistinguishablenext
: not distinguishable: such as
a
: lacking identifying or individualizing qualities
seemingly indistinguishable alternatives
The copy is practically indistinguishable from the original.
b
: not clearly recognizable or understandable
indistinguishable differences
c
: indeterminate in shape or structure
indistinguishable forms in the mist
indistinguishability noun
indistinguishableness noun
indistinguishably adverb

Examples of indistinguishable in a Sentence

indistinguishable differences that can be measured only electronically indistinguishable shapes in the fog
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
There’s passable yet indistinguishable music in this exact style dropping every day, but the difference with Chicago’s Fatso is that his lyrics feel like scraps of conversations that communicate his hurt without leaning on platitudes. Alphonse Pierre, Pitchfork, 24 June 2026 Bruss and colleagues identified a physically motivated alternative that formalizes system composition and gives rise to a class of theories that can be formulated with real numbers and yet are indistinguishable from standard quantum mechanics, even at the experimental level. Ameya Paleja, Interesting Engineering, 22 June 2026 Dressed in all black, the guards look indistinguishable from police officers. Ashley Andreou, STAT, 22 June 2026 The internet's foundational assumption of human participation is eroding as AI agents become indistinguishable from people. Sean Lee, Forbes.com, 19 June 2026 See All Example Sentences for indistinguishable

Word History

First Known Use

1606, in the meaning defined above

Time Traveler
The first known use of indistinguishable was in 1606

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Cite this Entry

“Indistinguishable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/indistinguishable. Accessed 28 Jun. 2026.

Kids Definition

indistinguishable

adjective
in·​dis·​tin·​guish·​able ˌin-dis-ˈtiŋ-gwish-ə-bəl How to pronounce indistinguishable (audio)
: impossible to distinguish clearly

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