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

Some are too bitter or earthy, while others are basically indistinguishable from fruit juices or sodas. —Caroline Tien, SELF, 27 Jan. 2025

Donald Trump’s inaugural address was functionally indistinguishable from one of his rally speeches. —The Editors, National Review, 20 Jan. 2025

But Verlander’s average fastball velocities in September 2023 and April/May 2024 are mostly indistinguishable. —Grant Brisbee, The Athletic, 9 Jan. 2025

This cat-and-mouse game between AI models continues until the fake content becomes indistinguishable from reality—helping criminals bypass other AI detection systems. —Rick Hutchinson, Forbes, 6 Jan. 2025

Word History

First Known Use

1606, in the meaning defined above

Kids Definition

indistinguishable

adjective

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

: impossible to distinguish clearly