careless

careless adj

OE; see care, n.

1. Cheerful; carefree; light-hearted; happy-go-lucky; not sorrowful.
2. Confident; bold; positive; comfortable; (see Isaiah 32:9).
3. Heedless; inattentive; indifferent; negligent; oblivious; without concern; [fig.] casual; nonchalant.