Synonym: cloudy, dark, dull, filmy, indistinct, murky, obscure, obtuse, unclear, vague. Similar words: aquifer, jeopardy, propagate, jeopardize, in loco parentis, double jeopardy. Meaning: [əʊ'peɪk] 
adj. 1. not clear; not transmitting or reflecting light or radiant energy 2. not clearly understood or expressed.
adj. 1. not clear; not transmitting or reflecting light or radiant energy 2. not clearly understood or expressed. 
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1. The jargon in his talk was opaque to me.
2. The windows were nearly opaque with grime.
3. The report was written in long, opaque sentences.
4. I felt his report was deliberately opaque.
5. I find her poetry rather opaque.
6. The glasses looked slightly opaque.
7. You can always use opaque glass if you need to block a street view.
8. The story is convoluted and opaque, often to the point of total obscurity.
9. As the liquid cools it becomes cloudy and opaque.
10. Aristoc black opaque tights, ￡1.89.
11. Unfortunately, the red lacquer is slightly too opaque to do the maple much justice.
12. The bottle was made of opaque glass so that the contents could not be seen.
13. Behind the opaque glass screen Franklin D. Hauser mopped his sweating forehead.
14. If I had my way it would be opaque Lycra tights every day of the week.
15. The Fluid Foundation comes in a little opaque beige plastic container, and is labelled, in gold lettering, Teint Naturel.
16. Manescu had the impression the apparition behind the opaque glass wall was drinking from an absurdly shaped vessel.
17. Cats aren't so easy - more opaque, you could say.
18. And they were glazed with opaque white glass so that the patients couldn't see out either, nor passers-by see in.
19. The lens may go opaque from cataracts, or it may darken so that it needs more light.
20. Wullschlager tackles the crucial but opaque question of Andersen's sexuality with tact, resisting psychoanalytic facilities.
21. Add the rice to the pan and cook until it becomes opaque.sentencedict.com
22. The once clear mountain stream is now polluted and opaque.
23. The complex administrative arrangements render the decision - making process somewhat opaque.
24. This is partly a humid, faintly Graham Greene-like love story, partly a conundrum about opaque and enigmatic behaviour.
25. Yet when written language is imperfectly identified and not fully understood it will tend to seem opaque in any case.
26. But there was a figure at the window, looking silently out at the opaque sky.
27. This blown vessel has a body of translucent cobalt blue glass, with a casing of opaque white glass.
28. The rain was now pelting down, covering the windows with a coat of water as thick and opaque as glycerine.
29. It grows to be a small dark cloud of purpose, opaque with life.
30. At this stage nothing remains but that each should present an opaque front to the other.