ostracize

[1]	blackball , banish , ban , blacklist , banish , ostracise , shun , exile , boycott , cast out , blackball , isolate , segregate , exclude , excommunicate , snub , shun , avoid , (Mainly Brit) send to Coventry , (Colloq) cut , cold-shoulder , give (someone) the cold shoulder
[2]	ostracise