King James Version (KJV)
Answer a fool according to his folly, lest he be wise in his own conceit.
Modern English
Answer a fool according to his folly, lest he be wise in his own eyes.
Hebrew
עֲנֵ֣ה כְ֭סִיל כְּאִוַּלְתּ֑וֹ פֶּן יִהְיֶ֥ה חָ֝כָ֗ם בְּעֵינָ֥יו׃
ʿaneh ksiyl kʾivaltvo pen yihyeh ḥakam bʿeynayv