WordWeb Online

1. One who reveals confidential information to the police or other authority
   "The mafia liquidated the squealer";
   - informer, betrayer, rat [informal], blabber [informal]
    
2. Domestic swine
   - hog, pig, grunter, Sus scrofa
    
3. [informal] Someone who reports another person's wrongdoings to someone in authority
   "I told the teacher that I'm not a squealer and didn't want to get involved";
   - telltale [Brit, informal], grass [Brit, informal], snitch [informal], tattletale [US, informal], talebearer [archaic], rat [informal]

Derived forms: squealers

Type of: informant, source, swine

Part of: genus Sus, Sus

Encyclopedia: Squealer