Stimulus (9)
'stimulus' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for spur that I've seen before include "Kick out" , "Cowboy boot attachment" , "Encourage" , "Branch - incitement" , "Lateral root" .)
'stimulus' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for motive that I've seen before include "Ground" , "Underlying intention" , "Underlying purpose" , "What induces one to take a certain action" , "Reason for doing something, say murder" .)
'stimulus' is the definition.
(I know that fillip is a type of positive stimulus)
This is the entire clue.
(Other definitions for fillip that I've seen before include "19, which sounds like a boy's name" , "Spur - incentive" , "Encouragement, stimulus" , "shot in the arm" , "Encouraging boost" .)
'stimulus' is the definition.
(I know that incentive is a type of reinforcement)
This is the entire clue.
(Other definitions for incentive that I've seen before include "Inducement" , "Payment to improve" , "Motivating payment" , "Something that motivates" , "A motivation" .)
'stimulus' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for impetus that I've seen before include "Moving force" , "Driving force, momentum" , "Momentum, stimulus" , "Motivation" , "Incentive, stimulus" .)