carefree vs devil-may-care

carefree and devil-may-care both are adjectives.

Word	Noun	Adjective	Verb	Adverb
carefree	No	Yes	No	No
devil-may-care	No	Yes	No	No

As adjectives, carefree and devil-may-care are synonyms defined as:

Other synonyms of carefree include freewheeling, happy-go-lucky, harum-scarum, slaphappy.

carefree (adjective)	devil-may-care (adjective)
cheerfully irresponsible	cheerfully irresponsible
free of trouble and worry and care	marked by a carefree unconventionality or disreputableness