漫不经心地;无忧无虑地(表现出对后果、责任或周围情况不太在意的态度)。
She shrugged insouciantly and walked away.
她漫不经心地耸了耸肩就走开了。
He spoke insouciantly about the risks, as if failure were impossible.
他谈起风险时满不在乎,仿佛失败不可能发生。
来自法语 insouciant(“无忧无虑的、不操心的”),由否定前缀 **in-**(不)+ souci(忧虑、担心)构成;后加英语副词后缀 -ly 形成 insouciantly,表示“以不操心的方式”。