Strong's Concordance H3688

Original Word: כָּסַל
Transliteration: kâçal
Phonetic Spelling: kaw-sal'
a primitive root; properly, to be fat, i.e. (figuratively) silly; be foolish.

Usages throughout the bible

Jeremiah 10:8 - But they are altogether brutish and foolish: H3688 the stock is a doctrine of vanities.