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smog

noun

ˈsmäg How to pronounce smog (audio)
Definition of smognext
as in haze
an atmospheric condition in which suspended particles in the air rob it of its transparency the city's smog was once so bad that darkness often prevailed, even at noon

Synonyms & Similar Words

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of smog Within just hours of being emitted, this mixture reacts to form ground-level ozone, which can irritate the lungs and is a key component of smog. — Michael A. Robinson, The Conversation, 25 Aug. 2026 Michigan still collects state gas taxes, but revoked the annual requirement for a summer blend of gasoline in Southeast Michigan, a step that is intended to help prevent smog. — Paula Wethington, CBS News, 24 Aug. 2026 The authors said the current bill would not create a permanent rolling exemption for pre-1986 vehicles or alter the broader smog-check program. — John Woolfolk, Mercury News, 14 Aug. 2026 Ben Levinson cited worsened air quality and visibility due to smog. — Laura Horne, Charlotte Observer, 13 Aug. 2026 See All Example Sentences for smog
Recent Examples of Synonyms for smog
  1. haze
  2. fog
  3. cloud
  4. mist
Noun
  • Toxic haze and smoke have caused a health crisis in neighboring countries.
    — ABC News, ABC News, 10 Sep. 2026
  • Officers followed the sounds of the gunfire to another floor, where a smoky haze limited their visibility.
    — Angel Saunders, PEOPLE, 3 Sep. 2026
Definition of haze
Noun
  • Passive nets retain practical advantage Passive fog nets have operated in the same desert for years without using electricity.
    — Atharva Gosavi, Interesting Engineering, 4 Sep. 2026
  • The Great Smoky Mountains that trail up the border between Tennessee and North Carolina earned their name from the natural, gauzy fog that often drapes across the region.
    — Megan Wahn, Condé Nast Traveler, 3 Sep. 2026
Definition of fog
Noun
  • Database lookup triggers Agent C, which calls out to an external API and writes results to cloud storage.
    — Nicola Sfondrini, Forbes.com, 15 Sep. 2026
  • The timing of such decisions has cast a cloud of uncertainty over the sport just seven weeks out from the beginning of the regular season, and coaches involved are either fuming or biting their lips until there’s more clarity.
    — CJ Moore, New York Times, 15 Sep. 2026
Definition of cloud
Noun
  • Unlike a conventional inkjet printer, aerosol jet printing turns liquid ink into a fine mist.
    — Neetika Walter, Interesting Engineering, 18 Sep. 2026
  • Shop your favorite category or keep scrolling for the year's favorite fragrances, body mists, and candles.
    — Elizabeth Siegel, Allure, 17 Sep. 2026
Definition of mist

Browse Nearby Words

smocking
smog
smoggy
See all Nearby Words

Cite this Entry

“Smog.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/smog. Accessed 19 Sep. 2026.

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More from Merriam-Webster on smog

Britannica.com: Encyclopedia article about smog

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