cut the ground from under somebody/somebody's feet
cut the ground from under(neath) (one's) feet
To suddenly cause problems for one. I plan to cut the ground from underneath the prosecutor's feet with this line of questioning.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
cut the ground from under
Unexpectedly withdraw support or destroy one's foundation, trip someone up. For example, Overriding his veto, Congress cut the ground from under the President. This metaphoric phrase alludes to removing the solid earth from under someone. [Mid-1800s]
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.
cut the ground from under somebody/somebody’s ˈfeetsuddenly spoil somebody’s idea or plan by doing something to stop them from continuing with it: When he announced that all my figures were out of date, he really cut the ground from under my feet.
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