1
: blocking the passage of radiant energy and especially light : exhibiting opacity (see opacity sense 1)
2
a
: hard to understand or explain
opaque prose
opaque noun
opaquely adverb
opaqueness noun

Examples of opaque in a Sentence

In the opening hour, a group of strangers receive a maddeningly opaque cell-phone summons to join a secret cross-country race with a $32 million prize. The thing is, the summons can also be a threat (one competitor's wife is possibly being held captive), and the consequences of falling behind are murderous. Tom Gliatto, People, 23 Apr. 2007
The reality facing Rory Stewart was that he was sent into a collapsed rural region in a country of which he knew almost nothing, and in which he had to find his way through a maze of opaque tribal and religious relationships. Robert Skidelsky, New York Review of Books, 5 Oct. 2006
Arborio rice, the kind that grows in the Po Valley and gave rise to the wonderful dish risotto, has a tiny opaque white pearl on the inside that remains al dente, and starch on the outside that the grains release during cooking, making a creamy sauce. Corby Kummer, Atlantic, March 1993
the opaque water of the muddy river somehow listeners seem to connect with the songwriter, despite his deeply personal, often opaque lyrics
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The Naturally reissue will be released as a standard black vinyl as well as two variants: An indie retail exclusive on opaque orange color vinyl and the Daptone shop exclusive on clear vinyl with orange splatter. Daniel Kreps, Rolling Stone, 27 Mar. 2025 In an industry as opaque as art, where dealers are rarely forthright about their businesses, the most reliable economic data can sometimes be the party budgets. Harrison Jacobs, ARTnews.com, 26 Mar. 2025 The measure, known as an assessment, offered a rare look into the program’s relatively opaque financials. Bloomberg, Mercury News, 25 Mar. 2025 The honey-like liquid rapidly transforms into a solid, opaque material that acts as a plug. Erin Brodwin, Axios, 24 Mar. 2025 See All Example Sentences for opaque

Word History

Etymology

Latin opacus — see opacity

First Known Use

1641, in the meaning defined at sense 1

Time Traveler
The first known use of opaque was in 1641

Browse Nearby Words

Cite this Entry

“Opaque.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/opaque. Accessed 1 Apr. 2025.

Kids Definition

opaque

adjective
1
: not letting light through : not transparent
2
: hard to understand
3
: dull of mind : stupid
opaquely adverb
opaqueness noun

Medical Definition

opaque

adjective
: exhibiting opacity : not pervious to radiant energy
opaqueness noun

More from Merriam-Webster on opaque

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!