swing into action

Idioms  

1. Energetically start doing something, as in Come on, let's swing into action before the others arrive. This idiom uses swing in the sense of “move vigorously.”

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Example Sentences

Memory B cells are one of those layers, cells that live for years in the bone marrow, ready to swing into action and produce more antibodies when needed.

From Seattle Times • Jan. 2, 2022

Studies indicate that glia, the cells that nurture neurons in the CNS, swing into action in response to damage to peripheral nerves.

From Scientific American • Oct. 10, 2021

Oppenheim said NBC News anticipated Trump’s remarks and was ready to swing into action.

From Los Angeles Times • Nov. 4, 2020

The video was captioned, “Spider-Man will soon swing into action above Avengers Campus opening this summer at Disney California Adventure Park.”

From Fox News • Feb. 4, 2020

Photographs of the children show a sweet if sober bunch who seem ready at a moment’s notice to swing into action with brooms and dishcloths.

From "The Devil in the White City" by Erik Larson