OPAQUE

adj. 1 dark, murky, dim, turbid, muddy, cloudy, obscure, obscured, obfuscated, black, impermeable, impenetrable, clouded, non-transparent, untransparent, non-translucent, hazy, blurred, blurry, smoky Solar eclipses should be viewed directly only through special opaque glass 2 unclear, vague, indefinite, obscure, unfathomable, unplumbable, baffling, mystifying, ambiguous, equivocal, impenetrable, cryptic, enigmatic, puzzling, perplexing, mysterious, elusive, abstruse, arcane, recondite Despite years of study, the inscriptions on the tomb have remained opaque to scholars 3 unintelligent, dense, thick, dull, obtuse, stupid, dull-witted, stolid, thickheaded, dunderheaded, dunderpated, slow, doltish, backward, cloddish He was too opaque to notice the jeers of his colleagues