Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. paetus, a, um, adj. [etym. dub.], having leering eyes, with a cast in the eyes, blinking or winking with the eyes, blinkeyed; esp. as an epithet of Venus, prettily leering, with a pretty cast in her eyes, prettily blinking: paetus, μύωψ τοῖς ὄμμασιν, Gloss. Philox.: uni animalium homini depravantur oculi: unde Strabonum et Paetorum cognomina, Plin. 11, 37, 55, § 150; Plaut. Fragm. ap. Fest. s. v. valgos, p. 375 Müll.: strabonem Appellat paetum pater, Hor. S. 1, 3, 45.
Of Venus: non haec res de Venere paeta strabam facit? Varr. ap. Prisc. p. 684 P.: si paeta est, Veneri similis, Ov. A. A. 2, 659: Minerva flavo lumine est, Venus paeto, Auct. Priap. 37.
2. Paetus, i, m., a surname.