set (one) aback(redirected from set (someone) aback)
set (one) aback
To startle, astonish, shock, or disconcert one. (A less common variant of "take one aback.") It set us all aback a bit to learn that John was moving to England next month. I'm sure the news sets everyone aback, but please believe me that this is in the best interest of the company.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.