verb

reject (a candidate applying to become a member of a private club), typically by means of a secret ballot.

her husband was blackballed when he tried to join the Country Club

reject,debar,bar,ban,vote against,blacklist,exclude,shut out,leave out in the cold,expel,drum out,oust,cashier,ostracize,repudiate,boycott,snub,shun,spurn,cold-shoulder,give the cold shoulder to,disfellowship