As adjectives the difference between obligatory and mandatory. is that obligatory is imposing obligation, morally or legally; binding while mandatory is obligatory; required or commanded by authority.

Does mandatory mean you have to do something?

A mandatory action is something that is required, obligatory, or compulsory. Like letting your Great Aunt Edna pinch your cheeks or passing gym to get your diploma. Mandatory is often used in opposition to optional.

What does it mean if something is mandatory?

1 : required by a law or rule : obligatory the mandatory retirement age. 2 : of, by, relating to, or holding a League of Nations mandate. mandatory.