To use the current topic or a specific incident as a pretext to express one's true intentions or personal views; to make a fuss over something to serve one's own agenda.

to perform or speak without preparation; improvisation

to bring into full play; to give play to; to put out a surge of energy or talent

to unleash or bring something into full play; to put out a surge of energy or effort

to perform exceptionally well; to surpass one's usual level of performance