The state or quality of being chaotic; the degree to which something is disorderly, confused, and unpredictable.
From 'chaotic' plus the noun-forming suffix '-ness.' This is a regular derivation following the productive pattern of adding '-ness' to adjectives to create abstract nouns.
Adding '-ness' to adjectives is one of English's most productive patterns, so you can create new abstract nouns almost infinitely—'chaoticness' might be rare but it perfectly describes that overwhelming feeling of things spiraling out of control!
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