[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
SynonymsSee more synonyms on Thesaurus.com
2. necessary, imperative.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- 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
Word Origin and History for unobligatory
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