spur · verb T /spɜr/
spur
C2 to encourage someone to do something or something to happen
Dictionary example:
Spurred on by his fans, he won the next three games easily.
Learner example:
It may spur them on [to] achieving more in the future. (Certificate of Proficiency in English; C2; Turkish)
spur · noun C /spɜr/
on the spur of the moment
C2 If you do something on the spur of the moment, you do it suddenly, without planning it.
Dictionary example:
On the spur of the moment we decided to go to London for the day.
Learner example:
In reality, many people buy things on the spur of the moment only to discover later that they, in fact, do not [meet] their expect[at]ions. (Certificate of Proficiency in English; C2; Russian)