The definition of haywire is something that has gone wrong or that is not working correctly.
(adjective)When every aspect of your plan falls apart, this is an example of when things have gone haywire.
See haywire in Webster's New World College Dictionary
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noun
adjective
Origin: prob. < haywire outfit, loggers' term for a camp with poor equipment that had to be held together with haywire
See haywire in American Heritage Dictionary 4
noun
Origin:
Origin: From the use of baling wire for makeshift repairs
. Word History: Why should the word for something as functional and mundane as haywire have come to be applied to something that is not functioning properly or to a person who is crazy? It would seem a story of semantics gone haywire. Haywire is a compound of the words hay and wire, originally simply denoting wire used to bale hay or straw. The term is first recorded as a noun in a debate in the Canadian House of Commons (1917), so it is a Canadianism or, since it appeared soon thereafter in a U.S. publication, a North Americanism. We find an earlier (1905) attributive use in the phrase hay wire outfit, a term used contemptuously for poorly equipped loggers. What lies behind this term is the practice of making repairs with haywire. Haywire is found in other contexts with the general sense “makeshift, inefficient,” from which come the extended senses “not functioning properly” and “crazy.”Learn more about haywire