Synonyms: devil-may-care, slaphappy, happy-go-lucky, harum-scarum, carefree, freewheeling
Definition: cheerfully irresponsible
Usage: carefree with his money; freewheeling urban youths; had a harum-scarum youth
Similar words: irresponsible
Definition: showing lack of care for consequences
Usage: behaved like an irresponsible idiot; hasty and irresponsible action
Definition: free of trouble and worry and care
Usage: the carefree joys of childhood; carefree millionaires, untroubled financially
Similar words: untroubled
Definition: not beset by troubles or disturbance or distress
Usage: seemed untroubled by doubts of any kind; untroubled sleep; a kind untroubled face