desultory

adjective

Lacking a plan, purpose, or enthusiasm.

SYNONYMS

aimlessautomaticcapriciouscasualchaoticcursoryerraticfitfulhalf-heartedhaphazardincidentalinconsistentinconstantintermittentirregularlukewarmmechanicaloccasionaloffhandpassingperfunctoryramblingrandomsketchysporadicsuperficialtokenunmethodicalunsystematicunthinking