speed demon

noun

Definition of speed demon

chiefly US, informal

  1. :  someone or something that moves or works very fast The new cook is a regular speed demon. This computer is a real speed demon compared with/to my old computer.

Word by Word Definitions

speedplay
  1. :  prosperity in an undertaking :  success

    :  the act or state of moving swiftly :  swiftness

    :  rate of motion: such as

  1. :  to prosper in an undertaking

    :  get along, fare

    :  to make haste

demon
  1. :  an evil spirit

    :  a source or agent of evil, harm, distress, or ruin

    :  an attendant (see 2attendant 1) power or spirit :  genius


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