This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Free of worries and responsibilities.

adj. Without cares; free of concern or worries; easy; casual; without difficulty.

adj. Free of trouble and worry and care.

adj. nonchalant in a cheerful manner.

adj. cheerfully irresponsible. Opposite of careful.

adj. same as unconcerned. Opposite of concerned.

adj. cheerfully irresponsible

adj. free of trouble and worry and care

"There were political messages, too: opposition to violence, to atheism and what he called carefree consumerism."

irresponsible    untroubled   

carefreeness   

happy    light-hearted    unworried    devil-may-care    happy-go-lucky    harum-scarum    slaphappy   

light-hearted    buoyant    thoughtless    devil-may-care    joyous    debonair    boyish    good-humored    playful    blithe