Antonyms of adj perceptible

3 senses of perceptible

Sense 1
perceptible (vs. imperceptible) -- (capable of being perceived by the mind or senses; "a perceptible limp"; "easily perceptible sounds"; "perceptible changes in behavior")

imperceptible (vs. perceptible), unperceivable -- (impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch")
        => impalpable -- (not perceptible to the touch; "an impalpable pulse")
        => incognizable, incognoscible -- (incapable of being perceived or known)
        => indiscernible, insensible, undetectable -- (barely able to be perceived; "the transition was almost indiscernible"; "an almost insensible change")
        => subliminal -- (below the threshold of conscious perception)
        => unobservable -- (not accessible to direct observation)

Sense 2
perceptible -- (easily perceived by the senses or grasped by the mind; "a perceptible sense of expectation in the court")

INDIRECT (VIA palpable) -> impalpable -- (imperceptible to the senses or the mind; "an impalpable cloud"; "impalpable shadows"; "impalpable distinctions"; "as impalpable as a dream")

Sense 3
detectable, perceptible -- (easily seen or detected; "a detectable note of sarcasm"; "he continued after a perceptible pause")

INDIRECT (VIA noticeable) -> unnoticeable -- (not noticeable; not drawing attention; "her clothes were simple and unnoticeable"- J.G.Cozzens)

Similarity of adj perceptible

3 senses of perceptible

Sense 1
perceptible (vs. imperceptible) -- (capable of being perceived by the mind or senses; "a perceptible limp"; "easily perceptible sounds"; "perceptible changes in behavior")
       => detectable, noticeable -- (capable of being detected; "after a noticeable pause the lecturer continued")
       => discernible -- (capable of being perceived clearly; "an essay with a meaning that was not always discernible")
       => faint, weak -- (deficient in magnitude; barely perceptible; lacking clarity or brightness or loudness etc; "a faint outline"; "the wan sun cast faint shadows"; "the faint light of a distant candle"; "weak colors"; "a faint hissing sound"; "a faint aroma"; "a weak pulse")
       => palpable -- (can be felt by palpation; "a palpable tumor")
       => perceivable -- (capable of being perceived especially by sight or hearing; "perceivable through the mist")
       => recognizable -- (easily perceived; easy to become aware of; "this situation produces recognizable stress symptoms")
       => sensible -- (readily perceived by the senses; "the sensible universe"; "a sensible odor")
          Also See-> audible#1, hearable#1; visible#1, seeable#1

Sense 2
perceptible -- (easily perceived by the senses or grasped by the mind; "a perceptible sense of expectation in the court")
       => palpable (vs. impalpable), tangible -- (capable of being perceived; especially capable of being handled or touched or felt; "a barely palpable dust"; "felt sudden anger in a palpable wave"; "the air was warm and close--palpable as cotton"; "a palpable lie")

Sense 3
detectable, perceptible -- (easily seen or detected; "a detectable note of sarcasm"; "he continued after a perceptible pause")
       => noticeable (vs. unnoticeable) -- (capable or worthy of being perceived; "noticeable shadows under her eyes"; "noticeable for its vivid historical background"; "a noticeable lack of friendliness")