WordWeb Online

1. A belittling comment
   - belittling
    
2. An abusive attack on a person's character or good name
   - aspersion, calumny, slander, defamation
    
3. The act of expressing disapproval (especially of yourself)
   - deprecation

Derived forms: denigrations

See also: denigrate

Type of: attack, blast, depreciation, derogation, disparagement, dispraise, fire, flack, flak