adj.
- Taking insufficient care; negligent: a careless housekeeper; careless proofreading.
- Marked by or resulting from lack of forethought or thoroughness: a careless mistake.
- Showing a lack of consideration: a careless remark.
- Unconcerned or indifferent; heedless: careless of the consequences.
- Unstudied or effortless: danced with careless grace.
- Exhibiting a disposition that is free from cares; cheerful: a careless grin; a careless wave of the hand.
carelessness care'less·ness n.
SYNONYMS careless, heedless, thoughtless, inadvertent. These adjectives apply to what is marked by insufficient care or attention. Careless often implies negligence: "It is natural for careless writers to run into faults they never think of" (George Berkeley). Heedless often suggests recklessness: "We have always known that heedless self-interest was bad morals; we know now that it is bad economics" (Franklin D. Roosevelt). Thoughtless applies to actions taken without due consideration: "But thoughtless follies laid him low / And stain'd his name" (Robert Burns). Inadvertent implies unintentional lack of care: With an inadvertent gesture, she swept the vase off the table.





