The Collaborative International Dictionary of English v.0.48:
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. [1913 Webster]WordNet (r) 3.0 (2006):
damnatory adj 1: threatening with damnation [syn: damnatory, damning]