in force(redirected from arrive in force)
1. [of a rule or law] currently valid or in effect. (*Typically: be ~.) Is this rule in force now? The constitution is still in force.
2. Fig. in a very large group. (*Typically: arrive ~; attack ~.) The entire group arrived in force. The mosquitoes will attack in force this evening.
1. In full strength, in large numbers, as in Demonstrators were out in force. This usage originally alluded to a large military force. [Early 1300s]
2. Operative, binding, as in This rule is no longer in force. This usage originally alluded to the binding power of a law. [Late 1400s]
1. In full strength; in large numbers: Demonstrators were out in force.
2. In effect; operative: a rule that is no longer in force.