What is the meaning of forgotten?

verb

• Dismiss from the mind; stop remembering.
  • usage: "I tried to bury these unpleasant memories"
  • synonyms: forget, bury
• Be unable to remember.
  • usage: "I'm drawing a blank"; "You are blocking the name of your first wife"
  • synonyms: forget, block, blank out, draw a blank
• Forget to do something.
  • usage: "Don't forget to call the chairman of the board to the meeting"
  • synonyms: forget
• Leave behind unintentionally.
  • usage: "I forgot my umbrella in the restaurant"; "I left my keys inside the car and locked the doors"
  • synonyms: forget, leave

adjective

• Not noticed inadvertently.
  • usage: "her aching muscles forgotten she danced all night"; "he was scolded for his forgotten chores"
  • synonyms: disregarded