ROGET THESAURUS
opacous
Opacity
N
opacity, opaqueness, film, cloud, opaque, impervious to light, adiaphanous, dim, turbid, thick, muddy,
opacous, obfuscated, fuliginous, cloud, hazy, misty, foggy, vaporous, nubiferous, muggy, smoky, fumid, murky, dirty.