speed demon

noun

Definition of speed demon

chiefly US, informal
: 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

speed play
  1. : prosperity in an undertaking : success

  2. : the act or state of moving swiftly : swiftness

  3. : rate of motion: such as

  1. : to prosper in an undertaking

  2. : get along, fare

  3. : to make haste

demon play
  1. : an evil spirit

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

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


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