Fly in the face of something

Pro Tip 1/3

Strong Opposition

Use it to describe an action or belief that directly opposes a common understanding or expectation.

Refusing to use technology flies in the face of modern society.

Pro Tip 2/3

Rebellious Tone

It often carries a tone of rebellion or deliberate nonconformity. This may imply criticism or disapproval.

Wearing casual clothes to a formal event flies in the face of traditional dress codes.

Pro Tip 3/3

Emphasize Surprise

Use to express surprise or astonishment that someone would so boldly contradict accepted notions.

Her statement flies in the face of what we considered historical fact.