The quality or state of being complicated; the degree to which something is difficult to understand or resolve.
From complicated plus the noun-forming suffix -ness. This combines the Latin root complicatus with Old English -ness to create an abstract noun describing the property of being entangled.
English lets us create infinite abstract nouns by adding -ness, but 'complicatedness' is rarely used because we prefer the simpler 'complexity'—yet they're not quite synonymous. Complicatedness suggests something *made* complex, while complexity just describes the state.
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