preconcerted

/ˌpriːkənˈsɜːrtɪd/
adjective
  1. Arranged or planned in advance, often secretly or by agreement.
    • The preconcerted plan fell apart when one member failed to show up.
    • The handshake was part of a preconcerted signal between the two spies.
    • Their meeting at the café was not accidental; it was preconcerted.
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