Wildfire definition

wīldfīr
Frequency:
A spreading disease of the skin, particularly erysipelas.
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A raging, rapidly spreading fire.
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A large, intense fire, usually in an uninhabited area, that is difficult to bring under control.
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A highly destructive fire.
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A highly flammable substance; specif.,
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A rapidly spreading fire, especially one occurring in a wildland area.
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(historical) Greek fire, Byzantine fire.
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(figuratively) Something that acts quickly and uncontrollably.
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The definition of a wildfire is a rapidly spreading forest or brush fire.

When someone drops a match in the forest and the trees start to flame and the fire spreads quickly, this is an example of a wildfire.

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Something that acts very quickly and intensely.

A land swept by the wildfire of revolution.

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Lightning occurring without audible thunder.
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A luminosity that appears over swamps or marshes at night; ignis fatuus.
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A highly flammable material, such as Greek fire, once used in warfare.
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like wildfire
  • Rapidly and intensely:
    The disease spread like wildfire.
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spread like wildfire
  • to be disseminated widely and rapidly: said as of a rumor
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Other Word Forms

Noun

Singular:
wildfire
Plural:
wildfires

Idioms and Phrasal Verbs

Origin of wildfire

  • Wild + fire. In the Middle Ages, the term referred to Greek fire.

    From Wiktionary