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- keep powder dry
keep powder dry
keep your powder dry
to be ready to do something if necessary We're not ready to start buying yet. We'll keep our powder dry until we think prices are as low as they'll go.
Etymology: from the idea that gunpowder (an explosive substance in the form of a powder) will not explode if it is wet
keep your powder dry
to be ready to take action if necessary All you have to do is keep your powder dry and await orders.
keep (one's) powder dry
To be ready for a challenge with little warning.