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egregious

American  
[ih-gree-juhs, -jee-uhs] / ɪˈgri dʒəs, -dʒi əs /

adjective

  1. extraordinary in some bad way; glaring; flagrant.

    an egregious mistake; an egregious liar.

    Synonyms:
    shocking, notorious, outrageous, gross
    Antonyms:
    unnoticeable, minor, moderate, tolerable
  2. Archaic. distinguished or eminent.


egregious British  
/ -dʒɪəs, ɪˈɡriːdʒəs /

adjective

  1. outstandingly bad; flagrant

    an egregious lie

  2. archaic distinguished; eminent

"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

Etymology

Origin of egregious

First recorded in 1525–35; from Latin ēgregius “preeminent, outstanding,” equivalent to ē- + greg-, stem of grēx “flock” + -ius adjective suffix; see e- 1, -ous

Explanation

Something that is egregious stands out, but not in a good way — it means "really bad or offensive." If you make an egregious error during a championship soccer match, your coach might bench you for the rest of the game. An egregious error is so bad that it might not be forgivable. Some synonyms are appalling and intolerable. The word has made a 180-degree turn from its original sense in Latin, when it meant "exceptionally good." Word historians have speculated that the negative usage was originally meant to be ironic, but it is the only sense that has survived. Be careful not to use it to mean "outstanding," since no one wants to be called egregious.

Keep Reading on Vocabulary.com

Vocabulary lists containing egregious

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:

“This is an egregious loophole we’ve got to close,” Wyden said.

From The Wall Street Journal Jul. 22, 2026

The most egregious case is Sturgis’ Ru, who transforms over the course of the play from a jittery wreck into a vengeful, plaintive monster.

From Los Angeles Times Jul. 21, 2026

Still, the idea of American prisoners was deeply egregious to many.

From Salon Jul. 4, 2026

But was it an egregious, personal error, akin to Totenberg stealing into Alito’s hotel room and absconding with an internal organ, as it has been widely treated?

From Slate Jul. 2, 2026

How had I made such an egregious mistake?

From "Into Thin Air" by Jon Krakauer

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