swing into action

swing into action (third-person singular simple present swings into action, present participle swinging into action, simple past and past participle swung into action)

1. To begin a task or activity with vigour.
   • 2023 December 27, Richard Foster, “New rail freight terminal leads the way”, in RAIL, number 999, pages 39-40:

     The train arrives from the south at approximately 0830, and the terminal's electric, rubber-tyred gantry crane swings into action, removing the empty containers and loading full ones in their place.