adj. 1. Free of trouble and worry and care; as, the carefree joys of childhood; carefree millionaires, untroubled financially. Syn. -- happy, lighthearted, unworried. [ WordNet 1.5 ]
2. nonchalant in a cheerful manner. Syn. -- breezy, airy. [ WordNet 1.5 ]
3. cheerfully irresponsible; as, carefree with his money. Opposite of careful. Syn. -- devil-may-care, happy-go-lucky, harum-scarum, slaphappy. [ WordNet 1.5 ]
4. same as unconcerned. Opposite of concerned. Syn. -- blithe. [ WordNet 1.5 +PJC ]