suddenly, without any previous planning or thought: ➔ spur-of-the-moment
We would often decide what to play on the spur of the moment.
a fact or event that makes you try harder to do something
It provided the spur to further research.
The crowd's reaction only acted as a spur.
a sharp pointed object on the heel of a rider's boot which is used to encourage a horse to go faster
to show that you deserve to succeed because you have the right skills
a piece of high ground which sticks out from the side of a hill or mountain
a railway track or road that goes away from a main line or road