mandatory

definition: required by rule
example:
speech part: adjective
synonyms: compulsory
definition: a territory surrendered by Turkey or Germany after World War I and put under the tutelage of some other European power until they are able to stand by themselves
example:
speech part: noun
synonyms: mandate
definition: the recipient of a mandate
example:
speech part: noun
synonyms: mandatary

mandatory is explained and pronounced

How mandatory is being used?