Definition of "unheard"

unheard¹

/ʌnˈhɜː(ɹ)d/

adjective
not comparable
1. Not heard.
2. Not listened to.
  Quotations
  What pangs I feel, unpitied and unheard!
  c. 1693?, John Dryden, Amaryllis
3. Not known to fame; not illustrious or celebrated; obscure.
  Quotations
  Nor was his name unheard or unadored.
  1667, John Milton, “Book I”, in Paradise Lost. […], London: […] [Samuel Simmons], […]; republished as Paradise Lost in Ten Books: […], London: Basil Montagu Pickering […], 1873,

unheard²

/ʌnˈhɜː(ɹ)d/

verb
1. simple past and past participle of unhear