Adverb
vacuously or complacently and unconsciously foolish
Source: WordNetWe fatuously hoped that we might pluck from the human tragedy itself a consciousness of a common destiny which should bring its own healing, that we might extract from life's very misfortunes a power of cooperation which should be effective against them. Jane Addams
The progress that's made ... in any argument or in any discussion is by confrontation. That's a dialectical fact. People say "oh let's have less heat and more light," fatuously. There's only one source of light. It happens to be heat. Christopher Hitchens
In America literary reputations come and go so swiftly," I complained, fatuously. [Santayana's] answer was swift. "It would be insufferable if they did not. George Santayana
Every such wet-nurse of letters has sought fatuously to make me write in a way differing from that in which the Lord God Almighty, in His infinite wisdom, impels me to write - that is, to make me write stuff which, coming from me, would be as false as an appearance of decency in a Congressman. H. L. Mencken