- not transparent or translucent; impenetrable to light; not allowing light to pass through.
- not transmitting radiation, sound, heat, etc.
- not shining or bright; dark; dull.
- hard to understand; not clear or lucid; obscure: The problem remains opaque despite explanations.
- dull, stupid, or unintelligent.
- something that is opaque.
- Photography. a coloring matter, usually black or red, used to render part of a negative opaque.
- Photography. to cover up blemishes on (a negative), especially for making a printing plate.
- to cause to become opaque.
Origin of opaque
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for opaque
Under Sepp Blatter, its interminable head, the body has been opaque and corrupt.Best Way to Punish Putin? No World Cup
July 20, 2014
Jersey milk is thick and opaque, but Jersey cows produce much less of it—not enough to cover the coin.The Secret to This Ice Cream: Pampered Cows
Jane & Michael Stern
May 18, 2014
As I organized my umbrella and shed my dripping coat, she sipped something golden and opaque from a tall pint glass.Wine Snobs, There’s a Beer for You
April 5, 2014
Political rhetoric, of course, is traditionally the most opaque of all.Will Jargon Be the Death of the English Language?
March 30, 2014
After shaking, he pours the opaque, green liquid through a strainer and into a chilled champagne coupe.The Absinthe-Minded Porteños of Buenos Aires
March 10, 2014
Daylight was scarcely visible through the opaque window-panes.
Around us were opaque mountains of clouds with irradiated edges.
Some days—and these were the most distressing of all—an opaque veil of smoke enveloped Paris.
But where is the opaque breath of the storm, where are the clouds?The Book of Khalid
The spores are broadly elliptic-fusiform, black, opaque, 107.The Mushroom, Edible and Otherwise
M. E. Hard
- not transmitting light; not transparent or translucent
- not reflecting light; lacking lustre or shine; dull
- not transmitting radiant energy, such as electromagnetic or corpuscular radiation, or sound
- hard to understand; unintelligible
- unintelligent; dense
- photog an opaque pigment used to block out particular areas on a negative
- to make opaque
- photog to block out particular areas, such as blemishes, on (a negative), using an opaque
Word Origin and History for opaque
early 15c., opake, from Latin opacus "shaded, in the shade, shady, dark, darkened, obscure," of unknown origin. Spelling influenced after c.1650 by French opaque (c.1500), from the Latin. Figurative use from 1761. Related: Opaquely; opaqueness.
- Impenetrable by light; neither transparent nor translucent.