Related Clues:

• Rent splitter, often
• One sharing a Wi-Fi password, maybe
• Rent co-payer, casually
• Dormmate, e.g
• Frosh friend
• Dormmate, informally
• Dorm mate
• School bud
• Dorm pal
• College assignment, informally?
• Dorm duo member
• Dorm bud
• Apartment sharer, slangily
• Fellow resident, informally
• Bunkmate, say