sinfully
🇺🇸
/ˈsɪnfəli/
🇬🇧
/ˈsɪnfəli/
in a way that is very bad or wrong
He ate sinfully large portions of the cake.
他吃了罪惡地大份蛋糕。
in a way that is slightly bad or wrong
She smiled sinfully at the thought of the surprise party.
她想到驚喜派對時罪惡地微笑。