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

• impalpable
• imperceptible
• inappreciable
• insensible

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 aim, in both cases, is the same: to make thought and emotion indistinguishable. —Adam Gopnik, New Yorker, 14 May 2025

But there comes a point when presence itself becomes an endorsement, when working within the system becomes indistinguishable from working for it. —Alondra Nelson, Time, 13 May 2025

Economic and security interests became indistinguishable, and technological fragmentation—if not outright decoupling from China—became the norm. —Ian Bremmer, Foreign Affairs, 13 May 2025

If everyone uses similar tools trained on similar data, outputs risk becoming indistinguishable. —R. Paul Singh, Forbes.com, 1 May 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