Usage History of 'vacillate'

The following chart shows how frequently 'vacillate' appeared in printed materials over time. For example, the word 'vacillate' occurred 4 times in books in 1648 and 5,349 times in 2008. From 1648 to 2008, the word 'vacillate' was used a total of 142,025 times in books scanned by Google. See Reference: Google Ngram project.

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