Synonyms for Deprecative (same or very similar meaning)
WordNet sense 1 (tending to diminish or disparage):
deprecating, deprecatory, slighting, belittling, depreciative, depreciatoryWordNet sense 2 (tending to (or intended to) detract or disparage):
uncomplimentaryWordNet sense 3 (marked by a tendency to find and call attention to errors and flaws):
criticalFrom the ODE community, based on WordNetadd/edit