[v] avoid speaking to or dealing with; "Ever since I spoke up, my colleagues ostracize me" [v] expel from a community or group
ban, banish, blackball, cast out, ostracise, shun
avoid, ban, banish, bar, bar out, blackball, blacklist, blockade, boycott, cast out, categorically reject, cold-shoulder, count out, cut, cut off, debar, deport, disallow, disapprove, disapprove of, disfavor, disfellowship, displace, dissent from, embargo