mandator
— Noun
– English
～ an authority who issues a mandate
mandatorily
— Adverb
– English
～ in a manner that cannot be evaded; "the ministry considers that contributions to such a fund should be met from voluntary donations rather than from rates compulsorily levied."
mandatory
— Noun
– English
～ 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
mandatory injunction
— Noun
– English
～ injunction requiring the performance of some specific act
mandatory
— Noun
– English
～ the recipient of a mandate
mandatory
— Adjective
– English
～ required by rule; "in most schools physical education is compulsory"; "attendance is mandatory"; "required reading"