The meaning of FATUOUS is complacently or inanely foolish : silly. How to use fatuous in a sentence. Did you know? What is the origin of infatuated? Synonym Discussion of Fatuous.
Define fatuousness. fatuousness synonyms, fatuousness pronunciation, fatuousness translation, English dictionary definition of fatuousness. adj. Foolish or silly, especially in a smug or self-satisfied way: "an era of delicious, fatuous optimism shaped b