F / fătŭĭtas
noun

fătŭĭtas

gen. ātis · gender feminine · decl. 3rd
foolishness; folly; silliness
foolishness, folly, silliness, fatuity (very rare), Cic. Inv. 2, 32, 99; id. Att. 11, 25, 2; Firm. Math. 8, 19; Vulg. Prov. 16, 22; August. Ep. 65.