Careless

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.