Usage History of 'duping'

The following chart shows how frequently 'duping' appeared in printed materials over time. For example, the word 'duping' occurred 2 times in books in 1699 and 2,512 times in 2008. From 1699 to 2008, the word 'duping' was used a total of 63,491 times in books scanned by Google. See Reference: Google Ngram project.

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