B1
to be unable to remember a fact, something that happened, or how to do something
Dictionary examples:
He forgot his own name during a job interview! (0.0)
He forgot his phone password and tried his cat's birthday! (0.0)
I forgot my pants and went to work in pajamas! (0.0)
I've forgotten what you do next. (10.6)
I'm sorry, I've forgotten your name. (16.2)
I completely forgot about Gemma's party. (17.1)
I've forgotten how to operate this thing. (18.8)
She'd forgotten that Lucy was coming over. (27.2)