What's the adjective for nontransparently? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs transpare, transparentise and transparentize which may be used as adjectives within certain contexts.
transparent
(of a material or object)See-through, clear; having the property that light passes through it almost undisturbed, such that one can seethrough it clearly.