Usage History of 'unbreakable'

The following chart shows how frequently 'unbreakable' appeared in printed materials over time. For example, the word 'unbreakable' occurred 4 times in books in 1763 and 14,852 times in 2008. From 1763 to 2008, the word 'unbreakable' was used a total of 361,056 times in books scanned by Google. See Reference: Google Ngram project.

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