Antonyms for

Antonyms of adj obligatory

2 senses of obligatory

Sense 1:
obligatory (vs. optional)

optional (vs. obligatory)
electiveex gratiafacultativenonmandatory, nonobligatory
Sense 2:

INDIRECT (VIA necessary) -> unnecessary, unneeded © 2001-2013, Demand Media, all rights reserved. The database is based on Word Net a lexical database for the English language. see disclaimer
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