imperceptible
adj. 1 not perceptible. 2 very slight, gradual, or subtle. imperceptibility n. Imperceptibly adv.
a. Not perceptible; not to be apprehended or cognized by the souses; not discernible by the mind; not easily apprehended.
adj. 1 not perceptible. 2 very slight, gradual, or subtle. imperceptibility n. Imperceptibly adv.
a. Not perceptible; not to be apprehended or cognized by the souses; not discernible by the mind; not easily apprehended.