belittle

verb

1. cause to seem less serious; play down

   verb.communication

   Examples

   Don't belittle his influence.

   Synonyms denigrate derogate minimize

   Source: WordNet 3.0

2. express a negative opinion of

   verb.communication

   Synonyms disparage pick at

   Antonyms blandish flatter

   Source: WordNet 3.0

3. lessen the authority, dignity, or reputation of

   verb.change

   Examples

   Don't belittle your colleagues.

   Synonyms diminish

   Source: WordNet 3.0

4. To make little or less in a moral sense; to speak of in a depreciatory or contemptuous way.

   verb

   Source: webster1913