Not giving way to pressure or persuasion; obdurate.(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 "unyielding" in a sentence
"CNN Political Ticker: All politics, all the time Blog Archive - McCain unyielding in call for gas tax relief « - Blogs from CNN. com"
"The viewer's experience now allows him/her to see a world which naïve eyes had believed to be stable, entrenched and unyielding, is actually in a state of constant flux."
"Bruinhelde, his expression unyielding, glanced over at Andacanavar; and the ranger moved past Midalis, sweeping the Prince and Bruinhelde into his wake, heading quickly for the nearest fallen Alpinadorans."