fatuously
🇺🇸
/ˈfætʃuəsli/
🇬🇧
/ˈfætʃuəsli/
in a foolish or silly way
He fatuously believed that he could fly by attaching wings to his arms.
他愚蠢地相信他可以透過將翅膀固定在手臂上來飛。