perceivably

In observable fashion

In a way that can be perceived or noticed.

Something that changes perceivably shows visible or detectable difference: The room temperature dropped perceivably when the sun went down.

The word is rare—noticeably or detectably usually serve better.

apparent

noticeably

In an obvious manner

obviously · clearly · patently · unmistakably · palpably · distinctly · conspicuously · overtly · plainly · transparently

measurable

quantifiably

In measurable terms

demonstrably · objectively · scientifically · instrumentally · metrically · empirically · observationally · experimentally · analytically

sensory

visually

By means of sight

phenomenally · experientially · empirically · tangibly · physically · materially · concretely · palpably · bodily

subtle

faintly

In a weak manner

vaguely · indistinctly · marginally · scarcely · weakly · hazily · obscurely · minimally · feebly · softly

Opposites
detectability

perceivablyimperceptibly

Below detection threshold

undetectably · invisibly · inaudibly · unnoticeably · indiscernibly

Family

perceivable, perceivability

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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G