Obligatory; required or commanded by authority. (adjective)
Of, being or relating to a mandate. (adjective)
A person, organisation or state who receives a mandate; a mandatary. (noun)
Examples of word mandatory
That said, what is it going to take to put teeth in the term mandatory evacuation?
But by using the term mandatory, we hope that that puts enough seriousness behind the order for people to leave.
On the last Tuesday of each month, she and her three horns and five rhythm put on an unstoppable juggernaut of a set at the Iridium, with one hard-hitting swinger after another, pausing only for what she describes as a mandatory "two-ballad minimum."
For the same reason they put 'mandatory' in quotes: To both differentiate it from an after-school activity, and because they know that "mandatory" is exactly that – "mandatory" with quotes and all.
They were with a half-dozen friends at the Lehigh Pub in Bethlehem last month, so the establishment tacked what it called a mandatory 18 percent gratuity onto the bill of about $73, according to reports.