Simple Definition of fatuity
: a foolish or stupid quality : a fatuous quality
: something foolish or stupid : a fatuous remark
Examples of fatuity
the fatuity of these policies
politicians exchanging fatuities about the need for campaign reform
Origin of fatuity
Middle French fatuité foolishness, from Latin fatuitat-, fatuitas, from fatuus
First Known Use: 1538
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