devil-may-care

adjectives

cheerfully irresponsible
"carefree with his money"; "freewheeling urban youths"; "had a harum-scarum youth"
carefree, devil-may-care, freewheeling, happy-go-lucky, harum-scarum, slaphappy
marked by a carefree unconventionality or disreputableness
"a cocktail party given by some...raffish bachelors"- Crary Moore
devil-may-care, raffish, rakish