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The definition of optional
1 Definitions of: optional
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- adjective, possible but not compulsory; left to personal choice
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- Show me the etymology of the word: optional
| Synonyms: | open, voluntary, discretionary, possible, extra, elective | |
|---|---|---|
| Antonyms: | compulsory |
From Collins
©HarperCollins 2008. Collins English Dictionary definition of optional