The state or quality of being adverse, or opposed to.(noun)
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Use "adverseness" in a sentence
"Back from the mid 70s on, there has been a certain culture of risk - adverseness to some extent in the CIA that was more or less started by the Church-Pike hearings, and I think Porter wants to turn that around."
"They are vulnerable to the fear tactics and the adverseness to change that is behind much of the opposition to"
"If you are not able to put up a wager, you will be discouraged and prostrated by the adverseness of circumstances."