The reason why the pig was so fond of his master was that Sir Walter had not treated him piggishly, but humanely.
"True Stories about Cats and Dogs"
Eliza Lee Follen
Perhaps she resented having behaved so piggishly at the station the day we came, and meant to take it out of Miss Shirley and myself.
"Entire PG Edition of The Works of William Dean Howells"
William Dean Howells
You treat me piggishly, you write nothing to me, and I don't know what's going on, and how things are at home.
"Letters of Anton Chekhov"
Anton Chekhov Translated by Constance Garnett