The quality or state of being daring; boldness, courage, and willingness to take risks or do dangerous things.
From daring (noun/adjective form of dare) + -ness (suffix that creates abstract nouns). The -ness suffix is one of English's most productive ways to convert qualities into nouns.
The -ness suffix is incredibly powerful—you can add it to almost any adjective to turn the quality into a noun, which is why English has so many '___ness' words that other languages need whole phrases to express.
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