set back on one's heels

set back on one's heels idiom
Surprise, shock, or disconcert, as in The news of their divorce set us back on our heels. This idiom, with its graphic image of someone being pushed back, dates from the first half of the 1900s.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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