Usage History of 'roil'

The following chart shows how frequently 'roil' appeared in printed materials over time. For example, the word 'roil' occurred 2 times in books in 1670 and 3,897 times in 2008. From 1670 to 2008, the word 'roil' was used a total of 69,736 times in books scanned by Google. See Reference: Google Ngram project.

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