belittle

Verb

Synonyms: minimize denigrate derogate disparage pick at diminish

WordNet 3.0

Verb (3)

cause to seem less serious; play down“Don't belittle his influence”Synonyms: minimize denigrate derogate
express a negative opinion of“She disparaged her student's efforts”Synonyms: disparage pick at
lessen the authority, dignity, or reputation of“don't belittle your colleagues”Synonyms: diminish

Webster's Dictionary (GCIDE)

Belittle \Be*lit"tle\, v. t. [imp. & p. p. Belittled; p. pr. & vb. n. Belittling.] To make little or less in a moral sense; to speak of in a depreciatory or contemptuous way. --T. Jefferson. [1913 Webster]