Egregious

ɪˈɡriːdʒəs

adjective

outstandingly bad; shocking

The word 'egregious' comes from the Latin word 'egregius,' meaning 'outstanding' or 'illustrious.' Over time, the meaning shifted to emphasize something outstandingly bad or shocking.

Luckily, he’s the most egregious fool on the planet.

Asimov, Isaac

Foundation 1 - Foundation

“Surely you have heard of the way the wand came to Egbert the Egregious, after his slaughter of Emeric the Evil?

J. K. Rowling

Harry Potter and the Deathly Hallows

“Upon my word,” said Albert, “you seem to be on excellent terms with the beautiful countess.” “You are mistaken in thinking so,” returned Franz calmly; “but you merely fall into the same error which leads so many of our countrymen to commit the most egregious blunders—I mean that of judging the habits and customs of Italy and Spain by our Parisian notions; believe me, nothing is more fallacious than to form any estimate of the degree of intimacy you may suppose existing among persons by the familiar terms they seem upon; there is a similarity of feeling at this instant between ourselves and the countess—nothing more.” “Is there, indeed, my good fellow?

Alexandre Dumas

The Count of Monte Cristo

From inside information extending over a series of years Mr Bloom was rather inclined to poohpooh the suggestion as egregious balderdash for, pending that consummation devoutly to be or not to be wished for, he was fully cognisant of the fact that their neighbours across the channel, unless they were much bigger fools than he took them for, rather concealed their strength than the opposite.

James Joyce

Ulysses

After Allenby’s defeat at Salt, he sent down to us the Emir Mohammed Said, brother of the egregious Abd el Kadir.

T. E. Lawrence

Seven Pillars of Wisdom