imperceptible
adj.
not perceptible, undetectable, not discerned by the senses; subtle, slight, unnoticeable
imperceptible
Adjective
1. impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch"
(synonym) unperceivable
(antonym) perceptible
(similar) impalpable
(see-also) impalpable
imperceptible
adj.
imperceptible, inaudible, indiscernible, indistinguishable
imperceptible
adj.
imperceptible, indiscernible
Imperceptible
(a.)
Not perceptible; not to be apprehended or cognized by the souses; not discernible by the mind; not easily apprehended.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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