Source : Webster's Revised Unabridged Dictionary (1913)

Damnatory \Dam"na*to*ry\ (d[a^]m"n[.a]*t[-o]*r[y^]), a. [L.
   damnatorius, fr. damnator a condemner.]
   Dooming to damnation; condemnatory. ``Damnatory invectives.''
   --Hallam.

Source : WordNet®

damnatory
     adj : threatening with damnation [syn: {damning}]