indistinguishable

adjective

in·​dis·​tin·​guish·​able ˌin-di-ˈstiŋ-gwi-shə-bəl How to pronounce indistinguishable (audio)
-ˈstiŋ-wi-
: not distinguishable: such as
a
: lacking identifying or individualizing qualities
seemingly indistinguishable alternatives
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 are, however, key technical challenges such as generating on-demand, indistinguishable single photons with high efficiency, and the probabilistic nature of photonic gates (the electronic elements in a computer performing logic operations). Gil Press, Forbes.com, 16 Sep. 2025 The text is a matrix of longing and loathing, the two states often indistinguishable. Literary Hub, 15 Sep. 2025 But respondents were clear that the robot should not be indistinguishable from a real dog. Mack Degeurin, Popular Science, 11 Sep. 2025 Politics is often indistinguishable from entertainment. Time, 10 Sep. 2025 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

Browse Nearby Words

Cite this Entry

“Indistinguishable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/indistinguishable. Accessed 19 Sep. 2025.

Kids Definition

indistinguishable

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

More from Merriam-Webster on indistinguishable

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!