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/ˈɒpʃ(ə)nəl/The price includes hotel and meals – entertainment is optional.
Add 200 grammes of walnuts (optional).
The history course is optional, but English is compulsory.
Remote central locking comes as an optional extra.
This is the British English definition of optional. View American English definition of optional.
Change your default dictionary and thesaurus to American English.
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using the Internet where you work, during working hours, for activities which are not work-related
BuzzWord ArticleOpen Dictionary
… to reveal a small part of your intentions in order to attract support, without actually committing yourself to doing anything
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