Definition of "decisively"

'In short,' concluded the parson, decisively smacking his leg with his switch, 'there's hardly such another family in England.'

1891, Thomas Hardy, Tess of the d'Urbervilles, volume 1, London: James R. Osgood, McIlvaine and Co., page 6

The visitors rallied again though and struck decisively 16 minutes from time when Yaya Toure headed in the winner.

2011 November 5, Phil Dawkes, “QPR 2 - 3 Man City”, in BBC Sport‎