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haywire (n.)

"soft wire for binding bales of hay," by 1891, from hay + wire (n.). Adjective meaning "poorly equipped, makeshift" is 1905, American English, from the sense of something held together only with haywire, particularly said to be from use of the stuff in New England lumber camps for jury-rigging and makeshift purposes, so that hay wire outfit became the "contemptuous term for loggers with poor logging equipment" [Bryant, "Logging," 1913]. Its springy, uncontrollable quality led to the sense in go haywire (by 1915).

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Definitions of haywire from WordNet
1
haywire (adj.)
not functioning properly;
has gone completely haywire
Synonyms: amiss / awry / wrong
haywire (adj.)
informal or slang terms for mentally irregular;
Synonyms: balmy / barmy / bats / batty / bonkers / buggy / cracked / crackers / daft / dotty / fruity / kooky / kookie / loco / loony / loopy / nuts / nutty / round the bend / around the bend / wacky / whacky
2
haywire (n.)
wire for tying up bales of hay;
From wordnet.princeton.edu