See mindless in Webster's New World Roget's A-Z Thesaurus II
adjective
Displaying a complete lack of forethought and good sense:
brainless, fatuous, foolish, insensate, senseless, silly, unintelligent, weak-minded, witless. See ability, plannedLacking rational direction or purpose:
meaningless, pointless, purposeless, senseless. Idiom: without rhyme or reason. See purposeShowing no concern, attention, or regard:
careless, forgetful, heedless, unconcerned, unheeding, unmindful, unobservant, unthinking. See careful
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