purposeless
pur-pose-less
adjective
Having no aim, reason, or useful function; without a clear objective.
"His wandering seemed utterly purposeless."
Thesaurus
Synonyms: directionless, afloat, rudderless, undirected, adrift, planless, aimless, desultory, otiose, senseless, worthless, wasted
Antonyms: purposeful