The state or condition of being opinionated.(noun)
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Use "opinionatedness" in a sentence
"Im sorry to sound rude, but why are nearly all of the anti-AGW posts in this catalogue of idiocy so proud of their combination of opinionatedness and an almost total inability to even try to apply either reason or gain any scientific knowledge whatsoever?"
"Jeez, my bout of opinionatedness is lasting longer than I thought!"
"She's up against a mayor, the mayor of the City of New York, Rudy Giuliani, who's, he's very, he's well known for his bluntness, his opinionatedness and even when New Yorkers don't agree with him, they often respect the fact that he's out there saying exactly what he thinks."