fatuously
🇺🇸
/ˈfætʃuəsli/
🇬🇧
/ˈfætʃuəsli/
in a foolish or silly way
He fatuously believed that he could fly by attaching wings to his arms.
他愚蠢地相信通过把翅膀绑在手臂上就能飞。