belittle

[1]	diminish , minimize , disparage , slight , decry , detract from , depreciate , trivialize , deprecate , degrade , denigrate , downgrade , de-emphasize , discredit , criticize , derogate , reduce , mitigate , lessen , undervalue , underestimate , underrate , minimize , (Colloq) play down , pooh-pooh
[2]	pick at