Usage History of 'unmerciful'

The following chart shows how frequently 'unmerciful' appeared in printed materials over time. For example, the word 'unmerciful' occurred 8 times in books in 1563 and 9,218 times in 2008. From 1563 to 2008, the word 'unmerciful' was used a total of 172,983 times in books scanned by Google. See Reference: Google Ngram project.

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