The Collaborative International Dictionary of English v.0.48:
Approbatory \Ap"pro*ba`to*ry\, a. Containing or expressing approbation; commendatory. --Sheldon. [1913 Webster]WordNet (r) 3.0 (2006):
approbatory adj 1: expressing or manifesting praise or approval; "approbative criticism"; "an affirmative nod" [syn: approving, affirmative, approbative, approbatory, plausive]