Like mad Meaning, Definition & Usage

  1. adverb with great speed or effort or intensity
    like sin; like the devil; like crazy; like thunder; like hell.
    • drove like crazy
    • worked like hell to get the job done
    • ran like sin for the storm cellar
    • work like thunder
    • fought like the devil

WordNet


Definitions
  1. like a mad person; in a furious manner; as, to run like mad. L'Estrange.

Webster 1913