Tenn. Code Ann. § 29-18-104: Unlawful detainer defined

Unlawful detainer is where the defendant enters by contract, either as tenant or as assignee of a tenant, or as personal representative of a tenant, or as subtenant, or by collusion with a tenant, and, in either case, willfully and without force, holds over the possession from the landlord, or the assignee of the remainder or reversion.