Decry

abuse asperse bad-mouth belittle calumniate censure condemn cry down defame denounce depreciate derogate detract devalue diminish discount discredit disgrace disparage do a number on downgrade dump on hit knock lower malign mark down minimize opprobriate pan poor-mouth put down rail against rap reprehend reprobate run down slam take away take swipe at throw stones at traduce underestimate underrate undervalue vilify write off