/ˈtɛnənsi ˈæt wɪl/ – Phrase
Definition: Hợp đồng thuê nhà linh hoạt.
A more thorough explanation: a tenancy that can be ended without notice
Example: The issue as to whether Erimus was occupying under a tenancy at will or a periodic tenancy was important as it affected the notice period which it was required to give in order to vacate.