mandatory [ man-d uh-tawr-ee, -tohr-ee] SYNONYMS | EXAMPLES | WORD ORIGIN adjective authoritatively ordered; obligatory; compulsory: It is mandatory that all students take two years of math. pertaining to, of the nature of, or containing a command. . Law permitting no option; not to be disregarded or modified: a mandatory clause. having received a mandate, as a nation. noun, plural man·da·to·ries. Origin of mandatory
dating back to
-tory 1 Related forms man·da·to·ri·ly, adverb non·man·da·to·ry, adjective, noun, plural non·man·da·to·ries. un·man·da·to·ry, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for non-mandatory Contemporary Examples of non-mandatory British Dictionary definitions for non-mandatory adjective having the nature or powers of a mandate obligatory; compulsory (of a state) having received a mandate over some territory noun plural -ries Also called: mandatary a person or state holding a mandate Derived Forms mandatorily, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for non-mandatory adj.
1570s, "of the nature of a mandate," from Late Latin
mandatorius "pertaining to a mandator," from Latin mandatus, past participle of mandare (see mandate (n.)). Sense of "obligatory because commanded" is from 1818.
Online Etymology Dictionary, © 2010 Douglas Harper