The state or quality of being broken, damaged, or not working properly.
From 'cronk' (broken) plus the suffix '-ness', which creates abstract nouns describing states or qualities; follows the standard English pattern of turning adjectives into nouns.
The '-ness' suffix is one of English's most productive tools—you can slap it onto almost any adjective and create a legitimate noun, which is why new words like 'cronkness' can feel natural even if they're rarely written down.
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