| thunderhead(gloom, obscurity, darkness, puff, mist) | |
| toxic waste(expression, idiom, contamination, effluence) | |
| veil(gloom, obscurity, darkness, puff, mist) | |
| woolpack(gloom, obscurity, darkness, puff, mist) | |
| London fog(expression, mist, vapor) | |
| abuse(contamination, effluence) | |
| adulteration(contamination, effluence) | |
| aroma | |
| bank of cloud | |
| befuddlement(mist, vapor) | |
| besmearing(contamination, effluence) | |
| besmirching(contamination, effluence) | |
| blindness(mist, vapor) | |
| butt | |
| carbon dioxide(noun, pollution) | |
| cloudiness(obscurity, fogginess, mistiness) | |
| cloudy air(expression, obscurity, mist, fogginess, fog) | |
| coat(obscurity, fogginess, mistiness) | |
| coating(obscurity, fogginess, mistiness) | |
| concern of epa(expression, idiom) |
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| APA | Smart Define. (2015). smog thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/smog/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "smog thesaurus" https://smartdefine.org/smog/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, smog thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/smog/thesaurus/synonyms>. |
| MLA | Smart Define. "smog thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/smog/thesaurus/synonyms> |