belittle

Verb

• lessen the authority, dignity, or reputation of
  • don't belittle your colleagues
    

• express a negative opinion of
  • She disparaged her student's efforts
    

• cause to seem less serious; play down
  • Don't belittle his influence
    

Related words

• Synonyms: 
  diminish , disparage , pick at , minimize , denigrate , derogate
• Antonyms: 
  flatter , blandish