forgotten

/fərˈɡɑtən/
verb
  1. Past participle of forget: to be unable to remember something or someone.
    • She has forgotten her friend's phone number.
    • He had forgotten to bring his lunch to school.
    • The keys were forgotten on the kitchen table.
adjective
  1. No longer remembered or thought about; left behind or ignored.
    • Her contributions were forgotten for many years.
    • They visited a forgotten village deep in the mountains.
    • The old toy lay forgotten in the attic.