1. (a.) Free from care or anxiety. hence, cheerful; light-hearted.

2. (a.) Having no care; not taking ordinary or proper care; negligent; unconcerned; heedless; inattentive; unmindful; regardless.

3. (a.) Without thought or purpose; without due care; without attention to rule or system; unstudied; inconsiderate; spontaneous; rash; as, a careless throw; a careless expression.

4. (a.) Not receiving care; uncared for.

absent-minded accident-prone airy all thumbs aloof apathetic arbitrary artless ataractic awkward barbarous beat-up bedraggled behindhand blase blowzy blunderheaded blundering boorish bored breakneck bumbling bungling butterfingered capricious carefree casual chintzy clownish clumsy clumsy-fisted cumbersome cursory degage delinquent derelict desperate detached devil-may-care dilapidated disheveled disinterested dispassionate disregardant disregardful distant distracted distrait drabbletailed draggled draggletailed easy easygoing erroneous faulty feckless fingers all thumbs flippant forgetful free and easy frowzy frumpish frumpy fumbling furious gauche gawkish gawky graceless grubby ham-fisted ham-handed harum-scarum hasty headlong heavy-handed heedless hotheaded hulking hulky hurried impassive impetuous impotent imprecise improper imprudent in rags inaccurate inadequate inadvertent inattentive incapable incautious inconsiderate incorrect incurious indifferent inelegant inexact inexcitable infelicitous informal ingenuous inobservant insouciant irresponsible lackadaisical lax lazy left-hand left-handed lenient listless loose loutish lubberly lumbering lumpen lumpish mad maladroit messy mindless mussy neglectful negligent nonchalant oafish oblivious offhand overeager overenthusiastic overindulgent overpermissive overzealous perfunctory permissive phlegmatic pococurante poky ponderous precipitant precipitate precipitous ragged raggedy rash raunchy reasonless reckless regardless relaxed remiss respectless ruinous scraggly seedy shabby shoddy slack slap-bang slapdash slatternly slipshod sloppy slovenly sluttish soft solecistic sordid squalid stiff stolid tacky tactless tattered thoughtless turned-off unanxious uncalculating uncaring unconcerned uncouth undiplomatic undiscriminating unfastidious unfit ungainly ungraceful ungrammatic unguarded unhandy unheedful unheeding uninquiring uninterested uninvolved unkempt unmarking unmindful unneat unnoticing unnoting unobservant unobserving unprepared unqualified unready unreasoning unreflecting unreflective unremarking unrestrained unsightly unsolicitous unstudied untactful unthinking unthorough unthoughtful untidy untroubled unwary unwieldy unworried wanton weak wild withdrawn wrecking wrong