Meaning of unheard-of

un•heard-of

Pronunciation: (un-hûrd'uv", -ov", -uv), [key]
— adj.
  1. that was never heard of; unknown: an unheard-of artist.
  2. such as was never known before; unprecedented: an unheard-of salary.
  3. shocking or outrageous: unheard-of conduct.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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