He Took This Out of His Head
It caused him to change his knowledge of the subject.
(Modern Hebrew)
Translation
Expression (Hebrew)
הוֹצִיא לוֹ אֶת זֶה מֵהָרֹאשׁ
Definition (Hebrew)
גָּרַם לוֹ לְשַׁנּוֹת אֶת דַּעְתּוֹ בַּנּוֹשֵׂא.
(הָעִבְרִית הַחֲדָשָׁה)