The Collaborative International Dictionary of English v.0.48:

Vindicative \Vin"di*ca*tive\ (?; 277), a. [Cf. F. vindicatif.
   Cf. Vindictive.]
   1. Tending to vindicate; vindicating; as, a vindicative
      policy.
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   2. Revengeful; vindictive. [Obs.]
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            Vindicative persons live the life of witches, who,
            as they are mischievous, so end they infortunate.
                                                  --Bacon.
      [1913 Webster] -- Vin"di*ca*tive*ness, n.
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