in·​dis·​tin·​guish·​able | \ ˌin-di-ˈstiŋ-gwi-shə-bəl How to pronounce indistinguishable (audio) , -ˈstiŋ-wi-\

Definition of indistinguishable

: not distinguishable: such as
a : indeterminate in shape or structure indistinguishable forms in the mist
b : not clearly recognizable or understandable indistinguishable differences
c : lacking identifying or individualizing qualities seemingly indistinguishable alternatives

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Other Words from indistinguishable

indistinguishability \ ˌin-​di-​ˌstiŋ-​gwi-​shə-​ˈbi-​lə-​tē How to pronounce indistinguishability (audio) , -​ˌstiŋ-​wi-​ \ noun
indistinguishableness \ ˌin-​di-​ˈstiŋ-​gwi-​shə-​bəl-​nəs How to pronounce indistinguishableness (audio) , -​ˈstiŋ-​wi-​ \ noun
indistinguishably \ ˌin-​di-​ˈstiŋ-​gwi-​shə-​blē How to pronounce indistinguishably (audio) , -​ˈstiŋ-​wi-​ \ 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

In the future, a conversation with a digital assistant will be indistinguishable from one with a person, according to Rohit Prasad. Laura Stevens, WSJ, "‘Alexa, Can You Be Empathetic, All-Knowing and Funny?’," 7 Mar. 2019 And by the time he was done, the government’s case looked statistically indistinguishable from roadkill. Felix Gillette,, "Get Ready for Big Media to Get Bigger After AT&T Victory," 13 June 2018 From a distance the Zero is indistinguishable from any other concours-quality, drop-dead gorgeous Series 1.5 roadster (with the covered headlamps), except for the absence of the low-slung dual exhaust pipes. WSJ, "1968 Jaguar E-Type Zero: Revamping the Vintage Roadster as an Electric Car," 5 Oct. 2018 From the outside, the U.S. Department of Agriculture’s laboratory in Beltsville, Md. is indistinguishable from any of the dozens of other federal facilities that dot the Washington D.C. suburbs. Andrew O'reilly, Fox News, "USDA kitten killing comes under fire from bipartisan group of lawmakers," 19 Sep. 2018 At that point, the survival rates in the two groups looked indistinguishable: Nine in 10 of the women who didn’t get chemo were still alive, as were nine in 10 of the women who got chemo. Julia Belluz, Vox, "Many breast cancer patients don’t need chemo, a precision medicine study just found," 5 June 2018 This biographical detail is especially ironic for Clinton, the prolific maestro who got the world dancing to Parliament Funkadelic, a psychedelic musical collective that's indistinguishable from rainbow dreads and technolocolor Afrofuturist garb. Brooke Bobb, Vogue, "George Clinton on Jumping Out of Spaceships in 9-Inch Heels and That Time He Called Out Prince," 23 Oct. 2018 Parity had been considered a fundamental symmetry in physics, holding that our world is indistinguishable from its mirror image. Jennifer Ouellette, Ars Technica, "Nobel-prize winning physicist who coined “god particle” dead at 96," 3 Oct. 2018 In the field of computer science, one of the great unsolved problems is to pass the Turing Test by building a robot so advanced as to be indistinguishable from a human. WSJ, "Facebook Robots: Turning The Turing Test on Its Head," 29 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'indistinguishable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of indistinguishable

1606, in the meaning defined above

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Statistics for indistinguishable

Last Updated

16 Mar 2019

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Time Traveler for indistinguishable

The first known use of indistinguishable was in 1606

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English Language Learners Definition of indistinguishable

: unable to be recognized as different : impossible to distinguish clearly from something else


in·​dis·​tin·​guish·​able | \ ˌin-di-ˈstiŋ-gwi-shə-bəl How to pronounce indistinguishable (audio) \

Kids Definition of indistinguishable

: impossible to recognize as different

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Comments on indistinguishable

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a flaw that causes the downfall of a hero

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