This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Overbearing pride or presumption; arrogance: "There is no safety in unlimited technological hubris” ( McGeorge Bundy).

n. Excessive pride, presumption or arrogance (originally toward the gods).

n. overbearing pride or presumption

"I know, I know, indulging in hubris is something heretofore unknown among writers on the internet."

haughtiness    lordliness    arrogance    hauteur    high-handedness   

sophrosyne   

vainglory    ineptitude    ministers'    silliness    puerility    faintheartedness    foolishness    short-sightedness    senselessness    hard-heartedness