What is another word for "opaque"?

Roget's Thesaurus (1911) lists these synonyms for "opaque": behind, blind, blush, born, cloud, cloudiness, cloudy, conceal, concealed, concealment, covered, covert, curtain, dark, delitescence, delitescent, dim, dirty, eclipse, escape, faint, film, flower, focus, fog, foggy, fuliginous, full, fumid, fuzzy, haze, haziness, hazy, hidden, hide, ill, imperceptibility, imperceptible, impervious, inconspicuous.