The Collaborative International Dictionary of English v.0.48:
Retaliatory \Re*tal"i*a*to*ry\, a. Tending to, or involving, retaliation; retaliative; as retaliatory measures. [1913 Webster]WordNet (r) 3.0 (2006):
retaliatory adj 1: of or relating to or having the nature of retribution; "retributive justice demands an eye for an eye" [syn: retaliatory, relatiative, retributive, retributory, vindicatory]