[uh-blig-uh-tawr-ee, -tohr-ee, ob-li-guh-]
required as a matter of obligation; mandatory: A reply is desirable but not obligatory.
incumbent or compulsory (usually followed 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.
Origin of obligatory
Synonyms for obligatory
Antonyms for obligatory
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
required to be done, obtained, possessed, etc
of the nature of or constituting an obligation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
c.1400, from Old French obligatoire "creating an obligation, obligatory," and directly from Late Latin obligatorius "binding," from obligat-, past participle stem of obligare (see oblige).
Online Etymology Dictionary, © 2010 Douglas Harper