desultory
Desultory is an adjective describing something that lacks a plan, purpose, or steady course. It can refer to actions that are haphazard or aimless, as well as to speech or work that moves from topic to topic without a clear connection, often giving an impression of aimlessness or casualness.
The term comes from Latin desultorius meaning leaping about, from desilire to leap down or aside. It
In contemporary use, desultory often carries a mildly negative nuance, suggesting insufficient effort, discipline, or follow-through.