60 entries under noun topic. ×
| muddiness | |
| night(place, shade, dark, gloom) | |
| thickness | |
| unclarity | |
| blackness(gloom, darkness, dusk) | |
| doubt(uncertainty, obscurity, vagueness, abstruseness) | |
| doubtfulness(uncertainty, obscurity, vagueness, abstruseness) | |
| equivocalness(muddiness, murkiness) | |
| haziness(uncertainty, covering, fold, coat) | |
| impermeability | |
| incomprehensibility | |
| mistiness(covering, fold, coat, cloud) | |
| murk(place, shade, dark, gloom) | |
| caliginosity(place, shade, dark, gloom) | |
| complexity | |
| complication | |
| dead of night(expression, idiom, place, shade) | |
| difficulty | |
| duskiness(place, shade, dark, gloom) | |
| evening(place, shade, dark, gloom) |
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| APA | Smart Define. (2016). opacity thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/opacity/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "opacity thesaurus" https://smartdefine.org/opacity/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, opacity thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/opacity/thesaurus/synonyms>. |
| MLA | Smart Define. "opacity thesaurus" 29 February 2016. Web. 26 September 2026. <https://smartdefine.org/opacity/thesaurus/synonyms> |