The quality of being disorderly; a state of lacking order, discipline, or proper organization; messiness or chaos.
From disorderly (adjective) + -ness (noun suffix). The root disorder combines dis- (reversal of order) with the Latin ordo (arrangement), creating the concept of 'against-arrangement.'
Interestingly, 'disorderliness' is the preferred noun form over 'disorderedness'—this shows that English sometimes prefers the -ly adjective root over the -ed participle when making abstract nouns.
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