Definitions for unheard-of

This page provides all possible meanings and translations of the word unheard-of

Random House Webster's College Dictionary


  1. unprecedented:

    an unheard-of scientific advance.

    Category: Common Vocabulary

  2. outrageous:

    unheard-of extravagance.

    Category: Common Vocabulary

  3. not previously known:

    the debut of an unheard-of singer.

Origin of unheard-of:


Princeton's WordNet

  1. unheard-of(adj)

    previously unknown

    "a first novel by an unheard of writer"; "developments on an unheard-of scale"

Kernerman English Learner's Dictionary

  1. unheard-of(adjective)ʌnˈhɛl θi

    not at all common or known about

    a disease that is now practically unheard-of


  1. unheard-of(Adjective)

    Previously unknown; unprecedented

Webster Dictionary

  1. Unheard-of(adj)

    new; unprecedented; unparalleled


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