forgot (something or someone), forgot to bring or prepare [something]; left [something] behind
You didn't think I'd forgotten Bilbo's birthday, did you?
— ロード・オブ・ザ・リング (2001)
Your husband says he wants to smoke? He’s forgotten how hard quitting was, hasn’t he?
— 別れる決心 (2022)
As is often the case with him, he forgot his textbook at home.