Open Dictionary
mouse here to listen, click to choose/add more
Location: USA
Source: Learn That Word
Profile URL:

Are you a native English speaker? How do you pronounce this word?

Thank you for contributing!
upload mp3 file or record now it's easy, promised!

{%type%} Definitions

WordNet 3.0Copyright Princeton University


Short "hint"

adj. - Not required by rule or law.

Usage examples (4)
  • Adjective : A reply is desirable but not obligatory. ,duties obligatory on all. ,an obligatory promise
  • Use the other part of the pie to indicate how much of your circle is nonobligatory.
  • I was the first to arrive for the nonobligatory lunch, and it was only reluctantly that he led me to the assigned table.
  • Of course, the friends would also prefer that even the nonobligatory suggestions be mostly good ones, so they won't have to spend too much time going through and... for more
Tutoring comment

Tutoring comment not yet available...

add more
The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google,,, and YouTube,,,,, as well as the generous Creative Commons community.