forget

dismiss from the mind; stop remembering; "I tried to bury these unpleasant memories"

be unable to remember; "I'm drawing a blank"; "You are blocking the name of your first wife!"

forget to do something; "Don't forget to call the chairman of the board to the meeting!"

leave behind unintentionally; "I forgot my umbrella in the restaurant"; "I left my keys inside the car and locked the doors"