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

Unlike those issues, U.S. adults’ views on Trump’s handling of Social Security and management of the federal government are indistinguishable from his overall approval rating. —Amelia Thomson-Deveaux, Chicago Tribune, 3 Apr. 2025

The design is nearly indistinguishable from the real thing. —Alex Vakulov, Forbes.com, 28 Mar. 2025

His pulse rings with an animal excitement indistinguishable from dread, panic: a flood of adrenaline, as if his life were at risk. —Joyce Carol Oates, The New Yorker, 16 Mar. 2025

This technology enables the creation of hyper-realistic videos along with voice clones that are nearly indistinguishable from the real thing. —Balasubramani Murugesan, Forbes, 10 Mar. 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