1. Informal or slang term for mentally irregular
   - balmy [archaic], barmy, bats, batty, bonkers, buggy [N. Amer], cracked, crackers, daft, dotty, fruity, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky 
2. Not functioning properly
   "has gone completely haywire"
   - amiss, awry, wrong

1. Wire for tying up bales of hay

Derived forms: haywires

See also: insane, malfunctioning, nonfunctional

Type of: wire

Encyclopedia: Haywire

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