Definition of optional in English:

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optional

Pronunciation: /ˈɒpʃ(ə)n(ə)l/

adjective

Available to be chosen but not obligatory: a wide range of optional excursions is offered
More example sentences
  • An optional carry case is available which features an armband strap.
  • Schooling is compulsory and free for the first nine years and optional and free for the next three.
  • He feels that Sanskrit could be introduced as one of the optional languages in schools and colleges.
Synonyms
voluntary, non-compulsory, at one's discretion, discretionary, not required, up to the individual, elective, non-mandatory, free, open, unforced;
Law  permissive

Derivatives

optionality

Pronunciation: /ɒpʃ(ə)ˈnalɪti/
noun

optionally

Pronunciation: /ˈɒpʃ(ə)n(ə)li/
adverb
Example sentences
  • Users can optionally add extra keywords, or tags, to messages.
  • If these effects are not judged to be sufficiently powerful, then the player may optionally move on to Emergency Stage Two.
  • The unused pieces of polenta can be cut in cubes, optionally sautéed, and simply added to a stew, a stir-fry or a soup.
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