keep one's powder dry

keep (one's) powder dry

To be prepared to act with little advance notice. The phrase refers to gunpowder, which needs to be kept dry in order to work properly. I know this job opportunity didn't work out, but keep your powder dry for the next one that comes along.
See also: dry, keep, powder
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

keep one's powder dry

Stay alert, be careful, as in Go ahead and take on the opposition, but keep your powder dry. This colloquial expression, which originally alluded to keeping gunpowder dry so that it would ignite, has been used figuratively since the 1800s but today is less common than take care.
See also: dry, keep, powder
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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