disparage
/di-ˈsper-ij/
verb
to belittle the importance or value of (someone or something) : to speak slightingly about (someone or something)
to lower (someone or something) in rank or reputation : degrade
disparaged his opponent
decry depreciate disparage belittle mean to express a low opinion of. decry implies open condemnation with intent to discredit. depreciate implies a representing as being of less value than commonly believed.