in force
Idioms-
In full strength, in large numbers, as in Demonstrators were out in force . This usage originally alluded to a large military force. [Early 1300s]
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Operative, binding, as in This rule is no longer in force . This usage originally alluded to the binding power of a law. [Late 1400s]
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.