His sudden change of plans threw a monkey wrench into our day.
monkey wrench
idiomTo introduce problems, to create unexpected trouble, to sabotage.
Origin
first recorded 19th c.Already in use, and not unfamiliar among mechanics, by 1832; see discussion and references at Monkey wrench § Etymology and history.
The new government regulations threw a monkey wrench into our project, forcing us to delay the launch by several months.
The unexpected resignation of the lead architect threw a significant monkey wrench into the construction timeline, leaving the entire development team scrambling for a solution.
- 01
brass monkey
Very cold.
- 02
cheeky monkey
An impudent person, usually a child.
- 03
get one's monkey up
To make someone angry, annoyed or irritated.
- 04
grease monkey
A mechanic, often with the specific connotation of an automobile mechanic.
- 05
like butter on a bald monkey
Very smooth.
- 06
make a monkey out of
To cause a person, group, or action to appear foolish or inferior; to subject someone or something to ridicule.
- 07
monkey around
To act foolishly.
- 08
monkey business
Activity that is mischievous, stupid, or time-wasting.