care·free /ˈkɛrˌfri, ˈkær-/
(a.)無憂無慮的,不負責的
carefree
adj 1: free of trouble and worry and care; "the carefree joys of
childhood"; "carefree millionaires, untroubled
financially" [syn: unworried]
2: cheerfully irresponsible; "carefree with his money";
"freewheeling urban youths"; "had a harum-scarum youth"
[syn: devil-may-care, freewheeling, happy-go-lucky,
harum-scarum, slaphappy]