1. Expel from a community or group
   "The tribe ostracised the offender";
   - banish, ban, ostracize, shun, cast out, blackball, pill [slang]
    
2. Avoid speaking to or dealing with
   "Ever since I spoke up, my colleagues ostracise me";
   - ostracize

Derived forms: ostracised, ostracises, ostracising

Type of: exclude, expel, keep out, kick out [informal], shut, shut out, throw out

Encyclopedia: Ostracise