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

The real dream for many is smart glasses that are almost indistinguishable from normal glasses, but which display some of the same AR content as the Vision Pro on transparent lenses instead of via a camera-to-screen pipeline. —ArsTechnica, 30 June 2025

Residents must leave a suite or a room—which can be seamlessly separated from the rest of the residence, becoming indistinguishable from a standard hotel room—available for booking on a regular basis. —Hannah Walhout, Travel + Leisure, 28 June 2025

For fans of college sports, the good news is that nothing much will change, apart from the games becoming increasingly indistinguishable from minor league versions of the NBA and the NFL. —Guy Lawson, Rolling Stone, 22 June 2025

Without it, influence becomes indistinguishable from control. —Jason Snyder, Forbes.com, 15 June 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