1. The use of aggressive or dubious tactics, such as psychological intimidation or disruption of concentration, to gain an advantage over one's opponent while still observing the rules in a sport or game.
2. The use of expedients or morally questionable acts to gain an advantage, as in politics.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.