Liferenter is a term that refers to someone who rents a home or other property for their entire lifetime. However, there are several other terms that can be used as synonyms for liferenter. These include lifetime tenant, permanent lessee, long-term renter, perpetual rentee, and indefinite renter. All these terms imply that the individual has committed to renting the property for an extended period, or perhaps even for the rest of their life. It is important to note that these terms are generally used in a formal or legal context, rather than in everyday speech.