14 entries under expression topic. ×
| air pollution | |
| greenhouse gasses(idiom, contamination, effluence) | |
| ground clouds(obscurity, mist, fog, vapor) | |
| pea soup(gloom, obscurity, darkness, puff) | |
| toxic waste(idiom, contamination, effluence) | |
| London fog(mist, vapor) | |
| cloudy air(obscurity, mist, fogginess, fog) | |
| concern of epa | |
| greenhouse effect(contamination, effluence) | |
| mental unclarity(mist, vapor) | |
| thick polluted mist | |
| tissue mist(obscurity, fogginess, mistiness) | |
| urban pollution problem | |
| visibility zero-zero(mist, vapor) |
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| APA | Smart Define. (2015). smog thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/smog/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "smog thesaurus" https://smartdefine.org/smog/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, smog thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/smog/thesaurus/synonyms>. |
| MLA | Smart Define. "smog thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/smog/thesaurus/synonyms> |