Opaque
Opaque adjective - Having an often intentionally veiled or uncertain meaning.
Viscous and opaque are semantically related. In some cases you can use "Viscous" instead an adjective "Opaque".
Nearby Words: opaqueness, opaquely
Cite this Source
Viscous and Opaque. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/opaque/viscous
Opaque & Viscous. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/opaque/viscous>.
Viscous or Opaque. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/opaque/viscous.
Google Ngram Viewer shows how "opaque" and "viscous" have occurred on timeline