Impromptu engine Synonyms

Definitions for Impromptu


  • (adjective) made or done without previous thought or preparation
  • (noun) something that is performed, made, or done without preparation
  • (adjective) with little or no preparation or forethought

Definitions for Engine


  • (noun) a device that changes energy into mechanical motion
  • (noun) motor that converts thermal energy to mechanical work
  • (noun) a wheeled vehicle consisting of a self -propelled engine that is used to draw trains along railway tracks