It's a portmanteau of odd and audacity.
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by Twatnut December 5, 2021
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1.The epitome of rudeness hypocrisy. Has the absolute brass neck/gall/nerve/impudence to completely ridicule an adversary while simultaneously and weirdly and intentionally doing the exact same thing. The ultimate troll. The don curly wurly of unfounded arrogance.

2. A person who claims to be a connoisseur of alcohol which is just a posh and watered down version of an alcoholic.
How dare he/she/(non-binary identification) have the oddacity to plagiarise me plagiarising the person who claimed to have invented plagiarism.
by Oddacity January 3, 2019
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