| 单词 | insouciant |
| 例句 | insouciant adjective •only outwardly did he possess an insouciant attitude about the disease:nonchalant, untroubled, unworried, unruffled, unconcerned, indifferent, blasé, heedless, careless | relaxed, calm, equable, serene, composed, easy, easygoing, carefree, free and easy, happy-go-lucky, lighthearted, airy, blithe, mellow | informal cool, laid-back, slaphappy. |
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