The quality or state of being cadaverous; the appearance of being extremely thin, pale, and death-like.
Derived from 'cadaverous' plus the noun-forming suffix '-ness', which converts adjectives into abstract nouns describing their essential quality. This pattern has been productive in English since Old English times, allowing speakers to discuss the abstract concept rather than just the observable trait.
The '-ness' suffix is so common we barely notice it, but it's incredibly powerful—it lets us talk about qualities as if they're things themselves. 'Cadaverousness' transforms a visual observation into a concept, allowing doctors and writers to discuss the phenomenon of appearing death-like as an actual condition.
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