Usage History of 'insuperable'

The following chart shows how frequently 'insuperable' appeared in printed materials over time. For example, the word 'insuperable' occurred 6 times in books in 1635 and 36,536 times in 2008. From 1635 to 2008, the word 'insuperable' was used a total of 1,074,787 times in books scanned by Google. See Reference: Google Ngram project.

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