Idiom

Fly by the seat of your pants

informalUS and UKTravel and speed idiomsWork idioms

To fly by the seat of your pants is to do something using instinct and quick decisions, without a plan, training or proper tools.

How people use it

People use it when they improvise, often with some risk (we didn't have a map, so we flew by the seat of our pants). It can sound admiring, showing quick thinking, or worried, suggesting poor planning. Before a noun it becomes seat-of-the-pants (a seat-of-the-pants decision). In British English, pants usually means underwear, but the phrase is understood there too, with trousers in mind.

Also said: by the seat of your pants, seat-of-the-pants.

Examples

Where it comes from

The phrase comes from early aviation in the 1920s and 1930s. Before reliable instruments, pilots often judged a plane's movement by what they felt through their bodies, including the seat beneath them, especially in fog or cloud. Flying this way was called flying by the seat of your pants, and the phrase later spread to any task done by instinct.

Check yourself

1. What does it mean to fly by the seat of your pants?

2. Which sentence uses the idiom correctly?

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