Sentence:  Suburbanites infamously <WSD>ostracize</WSD> those outside of their social and neighborhood circles. They <WSD>ostracize</WSD> the divorced and the poor, and they are often mean-spirited gossips. They are infamous for slutting up teenage daughters with immodest clothing and the acceptance of trashy role models, and they are infamous for cheerleader training, which includes the lessons of social ostracism. Many suburbanites belong to community-based country clubs, which, via consensus, define further ostracism rules. 
Meaning of the word marked with <WSD> tags:  To exclude (a person) from society or from a community, by not communicating with (them) or by refusing to acknowledge (their) presence; to refuse to talk to or associate with; to shun.