Synonyms for Aimless (same or very similar meaning)
WordNet sense 1 (continually changing especially as from one abode or occupation to another):
floating, vagabond, vagrant, driftingWordNet sense 2 (not settled or established):
unsettledWordNet sense 3 (aimlessly drifting):
adrift, rudderless, afloat, directionless, planless, undirectedFrom the ODE community, based on WordNetadd/edit