Definition: leave behind unintentionally
Usage: I forgot my umbrella in the restaurant; I left my keys inside the car and locked the doors
Similar words: lose
Definition: miss from one's possessions; lose sight of
Usage: I've lost my glasses again!
Definition: forget to do something
Usage: Don't forget to call the chairman of the board to the meeting!
Definition: leave undone or leave out
Usage: How could I miss that typo?; The workers on the conveyor belt miss one out of ten