Informal Mentally confused or erratic; crazy: went haywire over the interminable delays. (adjective)
Informal Not functioning properly; broken.(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 "haywire" in a sentence
"To say that this terrific book tells the true story of a New York stick-up gone haywire is like saying that Psycho is about a motel with an eccentric owner."
"I probably would have enjoyed myself more if Alton had rules that prohibited smoking indoors like San Diego does — because let me tell you, choking on cigarette smoke when you’re already having trouble breathing because your sinuses have gone haywire is not a pretty thing — and, well, if I’d gone with a group of my own friends."
"A “world gone haywire” wow, the only thing that went haywire is Roth’s brain."