be foolish
Definition:
to be foolish, be a fool 1a) (Piel) to make foolish, turn into foolishness 1b) (Niphal) to act or do foolishly 1c) (Hiphil) to do foolishly, play the fool
Definition:
to be silly; do (make, play the, turn into) fool(-ish, -ishly, -ishness).; for
h3688 (כָּסַל)