Definition of "bullheaded" [bull•head•ed]

• Foolishly or irrationally stubborn; headstrong. See Synonyms at obstinate. (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.

• "[2] "Almost prehistoric" was the verdict of the distinguished film editor Ralph Rosenblum, who worked on The Producers and has reminisced none too flatteringly about his sole collaboration with Brooks, whom he characterizes as a bullheaded amateur who had no idea how to use the resources of the camera to create humor."
• "It's just that kind of bullheaded insanity that keeps Democrats losing elections."
• "Bjerland said he's not trying to be "bullheaded," but there's no way to change his stance."