sorority

sorority
    n 1: a social club for female undergraduates
    

57 Moby Thesaurus words for "sorority":
      affiliation, alignment, alliance, amalgamation, association,
      boon companionship, brotherhood, brotherliness, cahoots, chumship,
      club, coadunation, coalescence, coalition, colleagueship,
      collegialism, collegiality, combination, community of interest,
      companionship, comradeship, confederacy, confederation,
      confraternity, confrerie, consolidation, consortship,
      copartnership, copartnery, country club, esprit de corps,
      federation, fellowship, fraternal order, fraternalism, fraternity,
      fraternization, freemasonry, fusion, guild, hookup, inclusion,
      incorporation, integration, league, merger, order, partnership,
      secret society, sisterhood, sisterliness, society, sodality,
      tie-in, tie-up, unification, union