Definition of 'on fire'

Adjective

1. lighted up by or as by fire or flame; "forests set ablaze (or afire) by lightning"; "even the car's tires were aflame"; "a night aflare with fireworks"; "candles alight on the tables"; "blazing logs in the fireplace"; "a burning cigarette"; "a flaming crackling fire"; "houses on fire"
      Synonyms: ablaze afire aflame aflare alight blazing burning flaming

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