HAYWIRE
awry, amiss(p), haywire, wrong
(adjective) not functioning properly; “something is amiss”; “has gone completely haywire”; “something is wrong with the engine”
balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky
(adjective) informal or slang terms for mentally irregular; “it used to drive my husband balmy”
haywire
(noun) wire for tying up bales of hay
Source: WordNet® 3.1
Etymology
Noun
haywire (plural haywires)
Wire used to bind bales of hay.
Synonyms
• baler twine
Adjective
haywire (comparative more haywire, superlative most haywire)
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.
Source: Wiktionary