unhandled

/AH0 N HH AE1 N D AH0 L D/
adjective
  1. 1

    Not having been handled.

  2. 2

    Untrained, untame and beyond handling.

  3. 3

    (Of an event, exception, etc.) Not having a handler.

Source: https://en.wiktionary.org/wiki/unhandled