Synonyms for aimless

purposeless, pointless, erratic, unavailing, thoughtless, careless, heedless, rambling, wandering, blind, random, indiscriminate, unsettled, flighty, capricious, wayward, dissolute, without aim, without end, chance, haphazard, desultory, fortuitous, to no purpose, rudderless, drifting, stray, accidental, undirected, objectless, casual, indecisive, irresolute, fitful, fanciful, fickle, eccentric, unplanned, planless, helpless, unpredictable, shiftless, unfruitful, wanton.

Antonyms purposeful, systematic, planned.