The quality or state of being feathery; the characteristic of being light, soft, or feather-like.
Noun formed from 'feathery' by adding the suffix '-ness,' which converts adjectives into abstract nouns describing qualities. Common formation in English since Old English times.
The '-ness' suffix is one of the oldest and most productive in English—it lets you convert nearly any adjective into an abstract noun representing that quality. 'Happy' becomes 'happiness,' 'feathery' becomes 'featheriness.'
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