forget in WordNet English dictionary

1. be unable to remember
   "I'm drawing a blank"; "You are blocking the name of your first wife!"
   forget  block  blank out  draw a blank 
   
2. dismiss from the mind; stop remembering
   "I tried to bury these unpleasant memories"
   forget  bury 
   
3. leave behind unintentionally
   "I forgot my umbrella in the restaurant"; "I left my keys inside the car and locked the doors"
   forget  leave 
   
4. forget to do something
   "Don't forget to call the chairman of the board to the meeting!"
   forget