knock (someone) down with a feather, to(redirected from to knock down with a feather)
knock down with a feather
see under knock for a loop.
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.
knock (someone) down with a feather, to
To overcome with surprise. This hyperbole dates from the early nineteenth century. An early appearance in print is in William Cobbett’s Rural Rides (1821): “You might have knocked me down with a feather.” Today it is more often used with the conditional could (instead of might).
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer