Definition of "preconcerted" [pre•con•cert•ed]

• Agreed upon in advance. (adjective)

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• "He said that if I assented to this arrangement, he would require all of his people except the objectionable man to run to the right of his line at a preconcerted signal."
• "It was preconcerted that as soon as they were seated they were to throw aside their veils and strike home."
• "One other circumstance is worthy of remark; and that is, that from the moment of their first outbreak at Westminster, every symptom of order or preconcerted arrangement among them vanished."