1 [noncount] a : the act or process of giving someone a reason for doing something : the act or process of motivating someone
Some students need motivation to help them through school.
b : the condition of being eager to act or work : the condition of being motivated
employees who lack motivation
2 : a force or influence that causes someone to do something
His behavior seemed to be without motivation. = There seemed to be no motivation [=reason, motive] for his behavior.
Many people have questioned her motivations in choosing to run for office at this time.