imperceptible

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English - English
Not perceptible, not detectable, too small in magnitude to be observed

We all missed the imperceptible shake of his head as he tried to warn us without being seen.

indiscernible
Something that is imperceptible is so small that it is not noticed or cannot be seen. Brian's hesitation was almost imperceptible. + imperceptibly im·per·cep·tibly The disease develops gradually and imperceptibly. almost impossible to see or notice
impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch"
{s} not perceptible, undetectable, not discerned by the senses; subtle, slight, unnoticeable
Not perceptible; not to be apprehended or cognized by the senses; not discernible by the mind; not easily apprehended
insensible
imperceivable
ımperceptible
{a} not to be perceived, minute
imperceptibility
The state or quality of being imperceptible
imperceptibility
{i} quality of being imperceptible, state of being undetectable; subtlety, quality of being unnoticeable
imperceptibility
the property of being imperceptible
imperceptibly
not noticeably, too small to be detected, too little to be perceived
imperceptibly
in an imperceptible manner or to an imperceptible degree; "the power of the Secretary of State in London increased gradually but imperceptibly
imperceptibly
in a subtle manner; in a way that is not perceived by the senses
imperceptible
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