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ignoramus

American  
[ig-nuh-rey-muhs, -ram-uhs] / ˌɪg nəˈreɪ məs, -ˈræm əs /

noun

  • ignoramuses
    plural
  1. an extremely ignorant person.

    Synonyms:
    simpleton, know-nothing, dunce, fool

ignoramus British  
/ ˌɪɡnəˈreɪməs /

noun

  1. an ignorant person; fool

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of ignoramus

1570–80; < Latin ignōrāmus we ignore (1st person plural present indicative of ignōrāre to be ignorant of, ignore ); hence name of an ignorant lawyer in the play Ignoramus (1615) by the English playwright G. Ruggle, whence current sense

Explanation

If you've ever been afraid to speak up in class, you might be worried that you'll look like an ignoramus, or an uneducated, ignorant person. Calling someone an ignoramus is an insult — it's a colorful way to comment on a person's ignorance or stupidity. The word comes right from the Latin ignoramus, literally "we do not know," which was a legal term in the 16th century that could be used during a trial when the prosecution presented insufficient evidence. After George Ruggle's 1615 play "Ignoramus", it came into popular use to mean "fool" or "dunce."

Keep Reading on Vocabulary.com

Vocabulary lists containing ignoramus

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

On June 15 he received a tongue bath on Spotify from that outstanding ignoramus Joe Rogan, who allowed him to spout his anti-science spiel for three hours with virtually no pushback.

From Los Angeles Times Jun. 19, 2023

Herbert is the opposite of the man his daughter married, who may be a genius in the usual ways but shows himself to be an ignoramus when it comes to basic human interaction.

From Salon Apr. 1, 2021

The term ignoramus was written on bills of indictment when the evidence presented seemed insufficient to justify prosecution.

From Fox News Mar. 30, 2020

Bird ignoramus that I am, I’m paired with an eagle-eyed National Park employee who, for the length of our six-hour hike, abides my frantic cries of “There’s a bird!” and, sometimes, just “Bird?”

From New York Times Jul. 28, 2018

"Oh, some ignoramus has melted a piece of this precious helmet for the gold," Don Quixote said.

From "Adventures of Don Quixote" by Argentina Palacios

Get your news from written sources, or sources that don’t even have viral video of raging ignoramuses on their menus.

From Washington Post Aug. 14, 2021

Maudlin also vigorously defends philosophy against ignoramuses who ask, Why do we need philosophy?

From Scientific American Nov. 4, 2018

Ergo, very smart people can be ignoramuses about an array of subjects, and even if they diligently work to become informed, they can still make unwise choices.

From Salon Apr. 20, 2017

Hey kids, don't listen to the ignoramuses at @WellsFargo.

From Slate Sep. 8, 2016

Were those first Jordan Valley farmers botanical ignoramuses who didn’t know what they were doing?

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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