"haywire" in the noun sense
1. haywire
wire for tying up bales of hay
"haywire" in the adjective sense
1. 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
informal or slang terms for mentally irregular
"it used to drive my husband balmy"
2. amiss, awry, haywire, wrong
not functioning properly
"something is amiss"
"has gone completely haywire"
"something is wrong with the engine"
Source: WordNet® (An amazing lexical database of English)
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