fatuously
adv. 愚蠢地;自满地(fatuous 的副词形式)
例句
He is not fatuously content with existing conditions.
他不会愚昧地满于现状的。
《新英汉大辞典》
This time the opportunity presented what he fatuously termed to himself a "cinch."
这一次出现的机会极为难得,他满以为十拿九稳哩。