opaque

Definitions:

Opacity.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (noun) (n.) (noun)
Not allowing light to pass through; not transparent; having no luster or brightness: said of some colors.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (adjective) (adj.) (adjective)
Shady: dark: not transparent.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (adjective) (adj.) (adjective)
Not transparent; obscure; dark.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (adjective) (adj.) (adjective)
Opaqueness.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (noun) (n.) (noun)
Opaquely.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (adverb) (adv.) (adverb)
That which will not admit light through.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (noun) (n.) (noun)
Not transparent.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (adjective) (adj.) (adjective)

Usage examples:

But the glass of these places of entertainment was all opaque and there were no loungers on the kerb in front of any.
- Foe-Farrell by Arthur Thomas Quiller-Couch
Paul had put out his lantern, and the room was now only dimly lit by an oil lamp hanging from the ceiling, whose rays, thrown downward by an opaque shade, cast a white circle in which the two of them stood by themselves.
- The Woman of Mystery by Maurice Leblanc
But dirt and a filthy existence form a better screen than opaque garments.
- The Former Philippines thru Foreign Eyes by Tomás de Comyn Fedor Jagor Rudolf Ludwig Carl Virchow Charles Wilkes