From Old English wilde fȳr. Equivalent to wild +‎ fire.


IPA(key): /ˈwaɪldˌfaɪɚ/


wildfire (countable and uncountable, plural wildfires)

  1. A rapidly spreading fire, especially one occurring in a wildland area.
    Synonym: forest fire
    Coordinate terms: brushfire, bushfire
    Hyponym: megafire
  2. (historical) Greek fire, Byzantine fire.
  3. (dermatology) A spreading disease of the skin, particularly erysipelas.
  4. (figuratively) Something that acts quickly and uncontrollably.
    • 2015 January 18, Monty Munford, “What’s the point of carrying a mobile phone nowadays?”, in The Daily Telegraph[1]:
      So, it appears a revolution has happened and a very unexpected one. Of course it was only a matter of time before it happened. With WiFi connectivity spreading faster than wildfire and a laptop or tablet in one’s bag, what’s the point of a mobile nowadays?

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