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Phrase(s): run on all cylinders
1. Lit. [for an engine] to run well and smoothly. • This car is now running on all cylinders, thanks to the tune-up. • You can hear if an engine is not running on all cylinders. 2. Fig. to function well or energetically. • Our department seems to be running on all cylinders. Congratulations. • I am back at my desk after my illness—running on all cylinders.
McGrawhill's American Idioms And Phrasal Verbs