The quality or state of being copious; abundance, plentifulness, or copiousness in speech or writing.
From Latin 'copiosus' (abundant, plentiful) plus the English suffix '-ity' (indicating a state or quality), following Latin patterns for creating abstract nouns.
Latin speakers valued 'copia' (abundance) so much that Cicero, the greatest Roman orator, wrote a whole rhetorical guide called 'De Copia Verborum' about how to generate endless abundant language—it was the ultimate skill.
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