1. Not functioning properly
   "has gone completely haywire";
   - amiss, awry, wrong
    
2. [slang] Insane, strange, eccentric or stupid
   "it used to drive my husband haywire";
   - balmy [archaic, slang], barmy [slang], bats [slang], batty [slang], bonkers [slang], buggy [N. Amer, slang], cracked [slang], crackers [slang], daft [Brit, slang], dotty [Brit, slang], fruity [slang], kooky [slang], kookie [slang], loco [slang], loony [slang], loopy [slang], nuts [slang], nutty [slang], round the bend [slang], around the bend [slang], wacky [slang], whacky [slang], daffy [slang], dippy [slang], doolally [Brit, slang], wacko [slang], daft as a brush [Brit, slang], potty [Brit, slang], round the twist [Brit, slang], dumbass [N. Amer, slang], nutsy [N. Amer, slang], barking mad [Brit, slang], mental [slang], barking [Brit, slang], bughouse [N. Amer, slang], cuckoo [slang]

1. Wire for tying up bales of hay
   "The farmer ran out of haywire halfway through baling"

Derived forms: haywires

See also: insane, malfunctioning, nonfunctional

Type of: wire

Encyclopedia: Haywire