(a.) Having no purpose or result; objectless.

aimless bootless casual causeless designless desultory discursive disorganized driftless dysteleological empty feckless fustian garbled good-for-nothing haphazard hit-or-miss importless impotent inane indiscriminate ineffective ineffectual inexplicable insignificant irregular meaningless mindless no go nonconnotative nondenotative nonsensical null of no use phatic pointless promiscuous purportless rambling random scrambled senseless stochastic stray superfluous unaccountable unavailing undirected unhelpful unmeaning unmotivated unorganized unplanned unprofitable unpurposed unsignificant useless vacuous wandering worthless