[כָסַל] verb be or become stupid (Late Hebrew Aramaic in derivatives; Arabic be sluggish, so North Syriac in derivatives; original meaning possibly thick, plump, fat; hence in good sense: כְּסָלִים loins, כֶּסֶל, כִּסְלָה confidence; in bad sense: כֶּסֶל, כִּסְלָה, כְּסִילוּת stupidity, folly, כְּסִיל stupid fellow) —

Qal Imperfect יִכְסָ֑לוּ they become stupid Jeremiah 10:8 ("" יִבְעֲרוּ they become brutish).

וְיִכְסָ֑לוּ ויכסלו veyichSalu wə·yiḵ·sā·lū wəyiḵsālūInterlinear Greek • Interlinear Hebrew • Strong's Numbers • Englishman's Greek Concordance • Englishman's Hebrew Concordance • Parallel Texts