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Definition of ignoramus:

  1. A stupid, ignorant person; a vain pretender to knowledge; a dunce.
  2. We are ignorant; we ignore; - being the word formerly written on a bill of indictment by a grand jury when there was not sufficient evidence to warrant them in finding it a true bill.


know-nothing, uneducated person.

Usage examples:

  • But Lutie, being an ignoramus, overlooked her opportunities, and now see where she is!

    - "From the Housetops", George Barr McCutcheon.
  • Chicago’ s in Illinois, you ignoramus.

    - "The Turner Twins", Ralph Henry Barbour.
  • Is it a joke or am I an ignoramus?

    - "Mark Twain, A Biography, 1835-1910, Complete The Personal And Literary Life Of Samuel Langhorne Clemens", Albert Bigelow Paine Last Updated: February 20, 2009.