Informal Outstanding in size, degree, or quality: a thumping success; a thumping party. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "thumping" in a sentence
"And this is what you call a thumping, 65 percent to 28 percent."
"It wasn't until after the president felt what he called the thumping of the midterm election defeats that he announced he had changed his mind."
"But that was before the president's party got what he called a thumping in the midterm elections, losing their majority in the House, and possibly the Senate."