do an about-face on (something)

do an about-face on (something)

To completely reverse one's opinion, position, or course of action regarding some issue, especially very suddenly. The senator seems to have done an about-face on the tax proposal, much to the surprise of his party. Once she saw how much money the company stood to lose, the CEO did an about-face on her decision.

See also: an, on

Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.