Pre·con·cert v. t. [imp. & p. p. Preconcerted; p. pr. & vb. n. Preconcerting.] To concert or arrange beforehand; to settle by previous agreement.
Pre·con·cert·ed a. Previously arranged; agreed upon beforehand. -- Pre*con*cert*ed*ly, adv. -- Pre*con*cert*ed*ness, n.
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preconcerted
adj : previously arranged or agreed on; "following preconcerted
plans"