optional

[ op-shuh-nl ]

adjective

1. left to one's choice; not required or mandatory:

   Formal dress is optional.

   Synonyms: voluntary, elective, discretional

2. leaving something to choice.

optional

/ ˈɒpʃənəl /

adjective

1. possible but not compulsory; left to personal choice

Derived Forms

• ˈoptionally, adverb

Other Words From

• option·ali·ty noun
• option·al·ly adverb
• non·option·al adjective
• non·option·al·ly adverb
• un·option·al adjective
• un·option·al·ly adverb

Word History and Origins

Origin of optional¹

First recorded in 1755–65; option + -al ¹

Example Sentences

It said it intended to “vigorously defend” itself and claimed none of the allegations in the lawsuit, if proven, would prevent the app from charging the fees or “optional tips,” but instead were about issues around “consumer disclosures and consent.”

From Los Angeles Times

He’ll skip the optional Sunday lift at USC, setting aside football in favor of something else entirely.

From Los Angeles Times

This doesn’t appear optional—if you record, the other people on the line will be notified.

From Slate

"School is not optional. Every child has the right to access quality education and parents have a legal duty to ensure regular attendance."

From BBC

Participating in GameFace ID is optional.

From Los Angeles Times