Antonyms of adj devil-may-care

2 senses of devil-may-care

Sense 1
carefree, devil-may-care, freewheeling, happy-go-lucky, harum-scarum, slaphappy -- (cheerfully irresponsible; "carefree with his money"; "freewheeling urban youths"; "had a harum-scarum youth")

INDIRECT (VIA irresponsible) -> responsible -- (worthy of or requiring responsibility or trust; or held accountable; "a responsible adult"; "responsible journalism"; "a responsible position"; "the captain is responsible for the ship's safety"; "the cabinet is responsible to the parliament")

Sense 2
devil-may-care, raffish, rakish -- (marked by a carefree unconventionality or disreputableness; "a cocktail party given by some...raffish bachelors"- Crary Moore)

INDIRECT (VIA unconventional, unconventional) -> conventional -- (following accepted customs and proprieties; "conventional wisdom"; "she had strayed from the path of conventional behavior"; "conventional forms of address")
INDIRECT (VIA unconventional) -> conventional -- (unimaginative and conformist; "conventional bourgeois lives"; "conventional attitudes")

Similarity of adj devil-may-care

2 senses of devil-may-care

Sense 1
carefree, devil-may-care, freewheeling, happy-go-lucky, harum-scarum, slaphappy -- (cheerfully irresponsible; "carefree with his money"; "freewheeling urban youths"; "had a harum-scarum youth")
       => irresponsible (vs. responsible) -- (showing lack of care for consequences; "behaved like an irresponsible idiot"; "hasty and irresponsible action")

Sense 2
devil-may-care, raffish, rakish -- (marked by a carefree unconventionality or disreputableness; "a cocktail party given by some...raffish bachelors"- Crary Moore)
       => unconventional (vs. conventional) (vs. conventional) -- (not conventional or conformist; "unconventional life styles")