think on one's feet

think on (one's) feet

To be able to think clearly in times of stress, especially when forming a solution to a pressing problem. Thank goodness you were able to think on your feet and find another way to stop the pipe from leaking. The whole basement would have flooded otherwise.See also: feet, on, think

think on one's feet

React quickly, be mentally agile, as in Reporters bombarded him with difficult questions, but Bill was very good at thinking on his feet . This expression uses on one's feet in the sense of "wide awake, alertly." [First half of 1900s] See also: feet, on, think