obligatory: Meaning and Definition of
Pronunciation: (u-blig'u-tôr"ē, -tōr"ē, ob'li-gu-), [key]
- required as a matter of obligation; mandatory: A reply is desirable but not obligatory.
- incumbent or compulsory (usually fol. by on or upon): duties obligatory on all.
- imposing moral or legal obligation; binding: an obligatory promise.
- creating or recording an obligation, as a document.
- obligatory (Thesaurus)