No, hubris is not an adverb. Hubris is a noun that refers to excessive pride or arrogance.
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"Hubris" is not a person.
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According to Merriam-Webster, "hubris" is defined as
"exaggerated pride or self-confidence." Hubris is a noun, and the
adjective being "hubristic." Noun: The hubris of that man
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Imperial Hubris was created in 2004.
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Sophrosyne is conceptually the opposite of hubris.