put-down
A mocking, insulting, and disparaging comment or remark. Enough with the put-downs, Tommy—if you don't have anything nice to say about your brother's performance, don't say anything at all. All the little put-downs my boss makes have worn my self-confidence away to nothing.
put-down
n. an insult; an intentionally cruel and deflating insult. Another put-down like that and I’m going home.