bemused dizzy gaga skittish woozy brainless bubbleheaded capricious careless changeable changeful ditzy empty-headed erratic fickle flighty flustered frivolous heedless inconstant irresolute irresponsible lightheaded punchy reckless reeling scatterbrained slaphappy swimming thoughtless unbalanced unsettled unstable unsteady vacillating volatile whimsical whirling wild