Synonyms and related words :
airy, ankle-deep, at odds, averse, brief, careless, casual, degage, depthless, desultory, differing, disagreeing, disinclined, disobedient, disregardant, disregardful, easygoing, epidermal, expeditious, fast, festinate, feverish, few, flippant, flying, footling, forced, forgetful, fractious, free and easy, furious, haphazard, hasty, heedless, hurried, immediate, inconsequential, inconsiderable, inconsiderate, indifferent, indisposed, indocile, insignificant, insouciant, instant, involuntary, jejune, knee-deep, last-minute, lazy, light, little, low, meager, miniature, mutinous, negligible, no great shakes, not deep, oblivious, offhand, on the spot, on the surface, opposed, passing, perfunctory, petty, picayune, picayunish, prompt, quick, random, rapid, recalcitrant, reckless, refractory, regardless, resistant, respectless, shallow, shallow-rooted, shoal, short, sketchy, skin-deep, slap-bang, slapdash, slight, small, snap, speedy, sulky, sullen, summary, superficial, surface, swift, tactless, thin, thoughtless, tiny, trifling, trivial, unconsenting, uncritical, undiplomatic, unheedful, unheeding, unmindful, unprepared, unprofound, unready, unsolicitous, untactful, unthinking, unwilling, urgent