impetus

But "a loss of impetus" in the second half allowed the 10 men of Rangers to roar back, force extra time, and add a few years to an already elderly statesman.

“I think it would certainly provide impetus in places like New York to move forward.”

Frank's side were guilty of conceding possession far too easily, with their lack of attacking impetus leaving their supporters increasingly frustrated.

"We know that with our set-piece and the lads coming off the bench that they were going to add some impetus."

There are also black and white flashbacks to his childhood, and so we come to understand that this is the impetus behind the dark tone of the material Springsteen is writing.