Lavatories rhymes with:
conservatories, observatories, observatory's, conservatories, dormitories, interrogatories, laboratories, laboratories', laboratory's, observatories, observatory's, reformatories, repositories, signatories, territories
conservatories, observatories, observatory's, conservatories, dormitories, interrogatories, laboratories, laboratories', laboratory's, observatories, observatory's, reformatories, repositories, signatories, territories