Synonyms of imperceptible

imperceptible

adjective

ˌim-pər-ˈsep-tə-bəl 

as in invisible

not perceptible by a sense or by the mind

a slight difference in hue between the two glasses that's imperceptible unless they're placed side by side

Synonyms & Similar Words

• invisible
• subtle
• indistinguishable
• inappreciable
• slight
• impalpable
• unseen
• obscure
• inaudible
• intangible
• hidden
• insensible
• faint
• inconspicuous
• indistinct
• unnoticeable
• insignificant
• concealed
• trivial
• vague
• slender
• unseeable
• liminal
• disguised
• covert
• unapparent
• buried
• shrouded

Antonyms & Near Antonyms

• perceptible
• discernible
• appreciable
• visible
• palpable
• sensible
• tangible
• observable
• audible
• recognizable
• obvious
• noticeable
• evident
• ponderable
• clear
• prominent
• conspicuous
• striking
• manifest
• significant
• plain
• apparent
• distinct
• straightforward
• eye-catching

Example Sentences

Recent Examples of imperceptible

All videos created with Omni will include Google's imperceptible digital watermark, SynthID, but Google is also adding content credentials verification to the Gemini app. — ABC News, 19 May 2026

Of course, part of the challenge was the outward invisibility of all the changes—to anyone who had not been at sea, my new life was imperceptible. — Literary Hub, 18 May 2026

MacKinnon still didn’t smile, but responded with an almost imperceptible nod. — Mark Lazerus, New York Times, 14 May 2026

Because there are no limits on call time, the transition from customer service to therapy was often imperceptible. — Julian Lucas, New Yorker, 20 Apr. 2026