As adjectives the difference between permissible and mandatory
is that permissible
is permitted while mandatory
is obligatory; required or commanded by authority.
As a noun mandatory is
(dated|rare) a person, organisation or state who receives a mandate; a mandatary.
Obligatory; required or commanded by authority.
* 1999 , Ian Stewart, Jack Cohen, Figments of Reality: The Evolution of the Curious Mind , page 276
- Attendance at a school is usually mandatory .
Of, being or relating to a mandate.
- This kind of immediate control structure we take to be characteristic of the tribe, and it leads to a rather rigid type of system in which 'every action not mandatory is forbidden'.
- Mandatory Palestine
* (obligatory) optional
* (obligatory) elective
(dated, rare) A person, organisation or state who receives a mandate; a mandatary.
Oxford Advanced Learner's Dictionary
The Oxford English Dictionary