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

The copy is practically indistinguishable from the original.

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 of indistinguishable

• 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

Today, users of AI issue verbal prompts to automatically create realistic pictures and videos that are nearly indistinguishable from real people and landscapes. —Rizwan Virk, The Conversation, 13 Nov. 2025

Their active ingredients are virtually indistinguishable from those of the many oral supplements already hawked by the wellness industry. —Yasmin Tayag, The Atlantic, 11 Nov. 2025

Some of our favorites are nearly indistinguishable from the real thing. —Kate McGregor, Architectural Digest, 5 Nov. 2025

The private and the public, the personal and the political become indistinguishable. —Shadi Hamid, Time, 3 Nov. 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