Maximum entitlement is a term that refers to the maximum amount of something that one is entitled to. This phrase can be replaced with several synonyms, depending on the context in which it is used. One such synonym is the phrase 'maximum limit,' which means the highest possible amount of something. Another synonym is the phrase 'upper bound,' which refers to the highest value that something can reach. 'Maximum allowance' is also a suitable synonym for maximum entitlement, as it refers to the highest amount of something that a person is allowed to have. Finally, 'maximum allocation' can also be used in place of maximum entitlement, as it refers to the highest amount a person can be assigned.