happy–go–lucky

1 having a relaxed, casual manner he is completely happy-go-lucky on fishing trips—if he catches something, fine; if he doesn't, that's fine, too Synonyms affable, breezy, devil-may-care, happy-go-lucky, laid-back, low-pressure, mellowRelated Words carefree, casual, dégagé, lackadaisical, nonchalant, unaffected, unconcerned, unfussy, unperturbed, untroubled, unworried; familiar, informal; flexible, lax, lenient, permissive, pliable, pliant, soft; accessible, approachable; imperturbable, nerveless, unflappable, unshakable; amicable, companionable, comradely, cordial, genial, hail-fellow-well-met, hearty, neighborly, warm, warmheartedNear Antonyms ceremonious, decorous, formal, rigid, strict; anxious, bothered, distressed, worried; jittery, jumpy, nervous, skittish, tenseAntonyms high-strung, uptight

2 having or showing freedom from worries or trouble went on her happy-go-lucky way, totally unaware that she was strewing litter behind her Synonyms blithe, debonair, devil-may-care, gay, happy-go-lucky, insouciant, lighthearted, lightsome, slaphappy, unconcernedRelated Words blasé (also blase), breezy, cavalier, nonchalant; casual, easygoing, informal, laid-back, low-pressure, relaxed, unfussyNear Antonyms earnest, grave, serious, serious-minded, somber (or sombre); careful, cautious, heedful, wary; anxious, concerned, upset, worried; long-suffering, overburdened, sorrowfulAntonyms careworn