A primitive root; properly, to be slack, i.e. (figuratively) to be foolish -- dote, be (become, do) foolish(-ly).
H2973. yaal
I. [יָאַל] verb be foolish (compare I. אול) —
Niph`al Perfect3masculine plural נוֺאֲלוּ Isaiah 19:3; Jeremiah 5:4; וְנֹאָ֑לוּ 50:36; 1plural נוֺאַלְנוּ Numbers 12:11; — do or act foolishly: —
1 shew wicked folly = sin חָטָאנוּ וַאֲשֶׁר נוֺאַלְנוּ אֲשֶׁר חַטָּאת Numbers 12:11 (J); in Jeremiah 5:4 an exhibition of this folly is ascribed to ignorance.
2 become fools, lacking insight and judgment: צֹעַן שְׂרֵי נוֺאֲלוּ Isaiah 19:13 the princes of Zoan have become fools ("" נֹף שָׂרֵי נִשְּׁאוּ, and, in 19:11 צֹעַן שָׂרֵי אֱוִילִים, etc.); וְנֹאָ֑לוּ אֶלהַֿבַּדִּים חֶדֶב Jeremiah 50:36 a sword is against the praters, and they shall become fools — be shewn up as such ("" ׃ חָֽתּוּ).