One that is unknown.
The quality or condition of being clear; clearness
(Figuratively) openness, degree of accessibility to view
Find another word for opacity. In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for opacity, like: obscurity, murkiness, darkness, clarity, cloudiness, opaqueness, transparency, reflectivity, translucency, brightness and shading.