insouciant
🇺🇸
/ɪnˈsuːsiənt/
🇬🇧
/ɪnˈsuːsiənt/
Calm and relaxed, not worried or concerned about anything.
Despite the storm, she remained insouciant and continued her work.
嵐にもかかわらず、彼女は無邪気で、仕事を続けました。