How to use "go haywire"

What Does "go haywire" Mean?

• The idiomatic meaning of "go haywire" is to break down, malfunction, become wildly erratic, or get out of control. It describes a situation where something, be it a machine, a plan, or even a person's emotions, becomes unpredictable and chaotic.
• The origin of the phrase is thought to be related to farm machinery. Hay balers, in particular, use wire to bind hay. If the machinery malfunctioned, the wire could become tangled and fly around erratically. This image of chaotic, uncontrolled movement is what the idiom captures.
• The register of "go haywire" is generally considered neutral to informal. It's suitable for everyday conversation and writing but might be too informal for strictly formal or technical contexts.

How to Use It

• "Go haywire" is a verb phrase. It typically follows a subject. It can be modified with adverbs (e.g., "completely go haywire"), and it can be used in various tenses (e.g., "went haywire," "is going haywire," "will go haywire"). It can also be negated (e.g., "not go haywire") and used in questions (e.g., "Did it go haywire?").
• It sounds unnatural to use "go haywire" in a literal sense unless you are specifically talking about hay-baling wire. Over-literal use in other contexts sounds awkward. For example, describing someone literally "going to collect hay wire" wouldn't use the idiom.

Real-World Examples

"Markets could go haywire." — The New York Times

"Pumps break, heaters go haywire." — The New York Times

"Your fight-or-flight mechanism will go haywire." — The New York Times

"Although the market righted itself quickly, regulators are debating ways to step in when prices go haywire." — The Economist

"When governments try to crack down on the mobile phone as a popular tool of communication, their efforts usually go haywire." — The Economist

Examples sourced from https://ludwig.guru/s/go+haywire

Similar Phrases and Alternatives

Phrase	Context
break down	General term for ceasing to function; can apply to machines, systems, or relationships.
malfunction	More technical, usually refers to machines or equipment.
spin out of control	Suggests a loss of control and increasing chaos.
go off the rails	Implies a deviation from a planned or expected course.
go berserk	Suggests a violent or frenzied loss of control, often referring to people or animals.
become chaotic	A more formal and general way to describe a situation becoming disordered.
fall apart	Suggests a gradual disintegration or failure.

Common Mistakes

• A common mistake is using "go haywire" in a strictly literal sense outside of its idiomatic meaning.
• Another error is using it in highly formal or technical contexts where more precise language is required.
• Learners often misunderstand the meaning and use it literally to describe something related to hay or wire, or confuse it with similar-sounding phrases.

Quick-Reference Summary

Expression	Idiomatic Meaning	Register	Avoid In
go haywire	To malfunction, become erratic, or lose control	Neutral to Informal	Highly formal or technical contexts, literal descriptions of hay or wire

FAQs

Is "go haywire" ever used literally, or is it always figurative?

"Go haywire" is almost exclusively used figuratively. While its origin may be related to hay-baling machinery, it's very rare to hear it used in a literal sense today. It usually describes something malfunctioning or becoming uncontrollable.

---

How is "go haywire" different from "go off the rails"?

Both phrases suggest things are going wrong, but "go off the rails" implies a deviation from a plan or expected course, whereas "go haywire" suggests a more general malfunction or loss of control. Something that "goes off the rails" was initially on a defined track; something that "goes haywire" might simply be acting erratically.

---

What's the best way to avoid misusing "go haywire"?

Remember that "go haywire" means to malfunction or become uncontrollable. Avoid using it in literal contexts related to hay or wire. If you're unsure, consider using a more general term like "malfunction" or "break down" to ensure clarity.