The quality or state of being canorous; melodiousness, harmonious resonance, or pleasant musical quality.
Abstract noun formed from 'canorous' by adding '-ness,' the English suffix for creating nouns expressing qualities or states. Standard word formation appearing in literary English since the 1700s.
English's '-ness' suffix is endlessly productive—we can attach it to almost any adjective to create a noun for that quality, which is why even rare words like 'canorous' can be nominalised into 'canorousness' and everyone understands it.
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