indistinguishable

adjective

in·​dis·​tin·​guish·​able ˌin-di-ˈstiŋ-gwi-shə-bəl 

-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

ˌin-di-ˌstiŋ-gwi-shə-ˈbi-lə-tē 

-ˌstiŋ-wi-

noun

indistinguishableness

ˌin-di-ˈstiŋ-gwi-shə-bəl-nəs 

-ˈstiŋ-wi-

noun

indistinguishably

ˌin-di-ˈstiŋ-gwi-shə-blē 

-ˈstiŋ-wi-

adverb

Synonyms

• invisible
• imperceptible
• subtle

Examples of indistinguishable in a Sentence

indistinguishable differences that can be measured only electronically

indistinguishable shapes in the fog

Recent Examples on the Web

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

But for many others, particularly first-generation students from modest backgrounds, the payoff is uncertain, and sometimes indistinguishable from that of non-graduates. —Bruno V. Manno, Forbes.com, 9 Sep. 2025

The Rise of Hyper-Realistic Cakes This creation fits into the broader trend of hyper-realistic cake art, where cakes are crafted to appear indistinguishable from everyday objects—handbags, hamburgers, shoes, even animals. —Lydia Patrick, MSNBC Newsweek, 9 Sep. 2025

Word History

First Known Use

1606, in the meaning defined above

Rhymes for indistinguishable

• distinguishable
• inextinguishable
• undistinguishable

Kids Definition

indistinguishable

adjective

in·​dis·​tin·​guish·​able ˌin-dis-ˈtiŋ-gwish-ə-bəl 

: impossible to distinguish clearly