1) Apartment sharer 2) Bunkmate 3) Certain sharer 4) College bud 5) College cohabitant 6) College cohort 7) College friend 8) College pal 9) Dorm buddy 10) Dorm companion 11) Dorm mate 12) Dorm mate, affectionately 13) Dorm pal 14) Dorm partner 15) Dorm sharer 16) Dorm-mate 17) Dormmate 18) Dormmate, affectionately 1) Cohab