Usage History of 'roughens'

The following chart shows how frequently 'roughens' appeared in printed materials over time. For example, the word 'roughens' occurred 2 times in books in 1726 and 608 times in 2008. From 1726 to 2008, the word 'roughens' was used a total of 14,745 times in books scanned by Google. See Reference: Google Ngram project.

See also:

Find all anagrams of 'roughens'
Words starting with a,b,c...
Words ending with a,b,c...
Words starting & ending with a,b,c....