The meaning of MANDATORY is required by a law or rule : obligatory. How to use mandatory in a sentence. Did you know?

MANDATORY definition: authoritatively ordered; obligatory; compulsory. See examples of mandatory used in a sentence.

MANDATORY definition: 1. Something that is mandatory must be done, or is demanded by law: 2. Something that is mandatory…. Learn more.

1. Required or commanded by authority; obligatory: Attendance at the meeting is mandatory. 2. Of, having the nature of, or containing a mandate. 3. Holding a League of Nations mandate over a territory.

If an action or procedure is mandatory, people have to do it, because it is a rule or a law.

adj. authoritatively ordered; obligatory; compulsory: It is mandatory that all students take two years of math. pertaining to, of the nature of, or containing a command. Law permitting no option; not to be …

Apr 9, 2026 · Adjective mandatory (comparative more mandatory, superlative most mandatory) obligatory; required or commanded by authority.

Mandatory refers to something that is required, obligatory, or compulsory. It indicates that there is a strict requirement or rule that must be followed or adhered to.

mandatory definition: obligatory or compulsory by authority. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like "mandatory retirement", …

This is the only mention of " mandatory " in conjunction with service, the only other use of the word mandatory is in regard to prohibited qualifying activities (religious ceremonies).