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.
1978, R. Z. Sheppard, "She-Wits and Funny Persons," Time, 29 February, 1978, 
[…] as the years went by, democracy and its wide audiences tended to broaden and coarsen humor.
Because the wool is poor quality it will coarsen the fabric.