To fly in the face of Meaning, Definition & Usage

Definitions
  1. to insult; to assail; to set at defiance; to oppose with violence; to act in direct opposition to; to resist.
Definitions
  1. to defy; to brave; to withstand.
  2. to insult; to assail; to set at defiance; to oppose with violence; to act in direct opposition to; to resist.

Webster 1913