care·less /-ləs/
  (a.)疏忽的,粗心的,不注意的,馬馬虎虎的
  Care·less a.
  1. Free from care or anxiety. hence, cheerful; light-hearted.
     Sleep she as sound as careless infancy.   --Shak.
  2. Having no care; not taking ordinary or proper care; negligent; unconcerned; heedless; inattentive; unmindful; regardless.
     My brother was too careless of his charge.   --Shak.
     He grew careless of himself.   --Steele.
  3. Without thought or purpose; without due care; without attention to rule or system; unstudied; inconsiderate; spontaneous; rash; as, a careless throw; a careless expression.
     He framed the careless rhyme.   --Beattie.
  4. Not receiving care; uncared for. [R.]
     Their many wounds and careless harms.   --Spenser.
  Syn: -- Negligent; heedless; thoughtless; unthinking; inattentive; incautious; remiss; supine; forgetful; regardless; inconsiderate; listless.
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  careless
       adj 1: marked by lack of attention or consideration or forethought
              or thoroughness; not careful; "careless about her
              clothes"; "forgotten by some careless person"; "a
              careless housekeeper"; "careless proofreading"; "it
              was a careless mistake"; "hurt by a careless remark"
              [ant: careful]
       2: effortless and unstudied; "an impression of careless
          elegance"; "danced with careless grace"
       3: (usually followed by `of') without due thought or
          consideration; "careless of the consequences"; "the
          proverbial grasshopper--thoughtless of tomorrow";
          "crushing the blooms with regardless tread" [syn: careless(p),
           thoughtless(p), regardless]
       4: showing an unthinking lack of consideration; "a careless
          remark"