Adjective

(en adjective)

Roughly-made, unsophisticated, decrepit (from the use of haywire for temporary repairs).

Behaving erratically or uncontrollably, especially of a machine or mechanical process; usually used with the verb "go".

* It was working fine until it went haywire and wouldn't stop printing blank sheets.

* Those kids go haywire when they don't get what they want.

* {{quote-journal

, date = 1905-05 , first = J. W. , last = Reading , title = Engine Failures , journal = Brotherhood of Locomotive Engineers Monthly Journal , volume = XXXIX , issue = 5 , url = http://archive.org/stream/brotherhoodloco00sgoog

page/n435/mode/1up

, page = 423 , passage = The engineer who makes of his calling a burden, who sees nothing but the wrong, or imposition as he may term it, who fancies perhaps that the whole world has conspired against him, who commences to damn things as soon as he appears upon the scene of his labors, and continues to damn everything, including his train crew, the engine, the officers, and almost everything, animate and inanimate, while making the round trip, is working out his own destiny, and it is but charitable to say of such a man that he is not well, his digestion has gone " hay wire " as it were. }}

* '>citation

"I got phone orders at Tuolumne Meadows to pack up and come over Sunrise Trail. Started at sunrise. Everything haywire , including cranky pack horse which kept getting off trail. Phoned in at Vernal Falls station. Ordered to hurry down, help catch two auto thieves which broke jail just after breakfast. Assigned to guard Coulterville Road.