Synonyms for (adjective) happy-go-lucky

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