unmotivated

/ʌnˈmoʊtɪveɪtɪd/
adjective
  1. Lacking the desire or willingness to do something; not having a reason or incentive to act.
    • After weeks of rain, the team felt unmotivated to continue the outdoor project.
    • An unmotivated employee often produces lower quality work.
    • She was unmotivated to study for the exam because the material seemed irrelevant.