adj. 25B6; adjective NOTICEABLE, visible, perceptible, perceivable, detectable, distinguishable, discernible, recognizable, evident, apparent, manifest, obvious, patent, clear, distinct, plain, unmistakable; archaic sensible.
OBSERVABLE
Meaning of OBSERVABLE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012