1941, Emily Carr, Klee Wyck, Chapter 6 "D'Sonoqua," http://www.gutenberg.net.au/ebooks01/0100131h.html
She appeared to be neither wooden nor stationary, but a singing spirit, young and fresh, passing through the jungle. No violence coarsened her; no power domineered to wither her. She was graciously feminine.

[…] as the years went by, democracy and its wide audiences tended to broaden and coarsen humor.

Because the wool is of poor quality, it will coarsen the fabric.

[…] though her skin had coarsened in the last ten years, the dark red of her cheeks and lips was as vivid as ever.

Coarsen

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Verb

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