'cry havoc' definitions:
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admonish,
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advise,
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alarm,
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alert,
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arouse,
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caution,
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cry wolf,
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fly storm warnings,
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frighten,
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give fair warning,
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give notice,
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give warning,
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issue an ultimatum,
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notify,
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sound the alarm,
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sound the tocsin,
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startle,
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threaten,
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tip,
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tip off,
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utter a caveat,
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warn,
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warn against