See blithe in Webster's New World Roget's A-Z Thesaurus II
adjective
Free from care or worry:
carefree, debonair, light2, lighthearted. See careful, happyCharacterized by joyful exuberance:
blithesome, boon2, convivial, gay, gleeful, jocund, jolly, jovial, merry, mirthful. See happy
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