denigrate
verb (formal)- denigrate somebody/something
to criticize somebody/something unfairly; to say somebody/something does not have any value or is not important synonym belittle诋毁;诽谤;贬低 Word Originlate Middle English (in the sense ‘blacken, make dark’): from Latin denigrat- ‘blackened’, from the verb denigrare, from de- ‘away, completely’ + nigrare (from niger ‘black’).