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

Scouring the data for other variables that might’ve affected dementia risk, the researchers found that both groups, vaccine-eligible and vaccine-ineligible, were practically indistinguishable. —New Atlas, 5 Apr. 2025

The quality of the legends can vary greatly, with higher-end keycaps looking indistinguishable from doubleshot keycaps, but less expensive options appearing fuzzy or blurry. —Henri Robbins, WIRED, 24 Mar. 2025

Realistic body movement indistinguishable from real people is still an issue even for AAA studios. —Victor Erukhimov, Forbes, 21 Mar. 2025

Though the sisters have indistinguishable hairstyles, Davis instills her characters with completely distinct personalities without being over-the-top about it, in ways only a master can. —Barry Levitt, Vulture, 18 Apr. 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