free from care or anxiety. hence, cheerful; light-hearted.-having no care; not taking ordinary or proper care; negligent; unconcerned; heedless; inattentive; unmindful; regardless.-without thought or purpose; without due care; without attention to rule or system; unstudied; inconsiderate; spontaneous; rash; as, a careless throw; a careless expression.-not receiving care; uncared for.