throw a monkey wrench into the works — To deliberately or accidentally disrupt a plan, process, or system, causing it to fail or stop working smoothly.
Part of speech: VERB
Definition: To deliberately or accidentally disrupt a plan, process, or system, causing it to fail or stop working smoothly.
Pronunciation (IPA): /θroʊ ə ˈmʌŋki rɛntʃ ˈɪntu ðə wɜːrks/
Example Sentences
- The power outage threw a monkey wrench into the company's product launch.
- My little brother threw a monkey wrench into my study plan by hiding my textbooks as a prank.
- Just when the wedding was going perfectly, the groom's monkey escaped and threw a real monkey wrench into the works — literally!
throw a monkey wrench into the works
VERB[/θroʊ ə ˈmʌŋki rɛntʃ ˈɪntu ðə wɜːrks/]
To deliberately or accidentally disrupt a plan, process, or system, causing it to fail or stop working smoothly.

The sudden power outage threw a monkey wrench into the works and delayed the entire production.

The team had planned the event perfectly, but a last-minute rule change threw a monkey wrench into the works. (MONKEY WRENCH = an adjustable wrench)

A monkey wrench disrupted the works, so the mechanic sat on a bench after fixing the machine and discovered a terrible stench.
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🎤Pronunciation
🌳Etymology
Origin
Originates from 19th-century American factory slang, where literally throwing a wrench into machinery would jam its gears and halt production.
Breakdown
throw (to fling) + monkey wrench (adjustable tool) + into (inside) + the works (the machine's moving parts)
🎵Rhyme
🔗Collocations
📝Examples
“The power outage threw a monkey wrench into the company's product launch.”
“My little brother threw a monkey wrench into my study plan by hiding my textbooks as a prank.”
“Just when the wedding was going perfectly, the groom's monkey escaped and threw a real monkey wrench into the works — literally!”
“A sudden budget cut threw a monkey wrench into the research team's plans.”
📚Related Words
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