Usage History of 'improbity'

The following chart shows how frequently 'improbity' appeared in printed materials over time. For example, the word 'improbity' occurred 6 times in books in 1673 and 375 times in 2008. From 1673 to 2008, the word 'improbity' was used a total of 14,190 times in books scanned by Google. See Reference: Google Ngram project.

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