Smog

//smɑɡ// noun, verb, slang

noun, verb, slang ·Moderate ·High school level

Definitions

Noun
  1. 1
    A noxious mixture of particulates and gases that is the result of urban air pollution. countable, uncountable

    "A widow since 1967, she lives now in Honolulu because, she says, she can enjoy the Californialike climate without the smog."

  2. 2
    air pollution by a mixture of smoke and fog wordnet
Verb
  1. 1
    To get a smog check; to check a vehicle or have it checked for emissions. informal

    "If the car is more than five years old, you'll have to have it smogged before you can register it."

Synonyms

All synonyms
becloudbefogclouddarkenfilmfog

Example

More examples

"The air was infected with photochemical smog."

Etymology

Blend of smoke + fog.

Related phrases

electronic smogair pollutiondry fogsmog check

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.