BLITHE

adj. 1 blissful, happy, cheerful, joyous, merry, light-hearted, well-pleased, delighted, gay, joyful, elated, jubilant His spirit was blithe and his heart unquenchable 2 happy-go-lucky, insouciant, heedless, carefree, unconcerned, blasé, casual, detached, indifferent, uncaring, careless She goes through life with a blithe disregard for the feelings of others