go haywire

go haywire (third-person singular simple present goes haywire, present participle going haywire, simple past went haywire, past participle gone haywire)

1. (informal, somewhat derogatory) To become wildly confused, out of control, or mentally unbalanced.
   • 2025 November 1, Aisha Down, “Ducking annoying: why has iPhone’s autocorrect function gone haywire?”, in The Guardian‎^[1], →ISSN:

     If you feel the autocorrect on your iPhone has gone haywire recently – inexplicably correcting words such as “come” to “coke” and “winter” to “w Inter” – then you are not the only one.