Synonyms for Propitiatory (same or very similar meaning)
WordNet sense 1 (having power to atone for or offered by way of expiation or propitiation):
expiatory, expiative
WordNet sense 2 (intended to reconcile or appease):
propitiative
WordNet sense 3 (intended or likely to overcome animosity or hostility):
conciliatory, conciliative
From the ODE community, based on WordNet
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