optional

adjective

op·​tion·​al ˈäp-sh(ə-)nəl 

: involving an option : not compulsory

optionality

ˌäp-shə-ˈna-lə-tē 

noun

optionally adverb

Synonyms

• discretionary
• elective
• voluntary

Examples of optional in a Sentence

Jackets are required at the restaurant, but ties are optional.

Many optional features are available on this car.

Registration is optional, not mandatory.

Recent Examples on the Web

The backlash pushed Gauthier to respond directly in a blog post, stressing that Recover was completely optional and promising to speed up plans to make Ledger’s software code open for public review. —Nina Bambysheva, Forbes, 22 Nov. 2024

There are also puddle lamps, an optional tow hook, and, of course, special Manthey branding. —Bryan Hood, Robb Report, 22 Nov. 2024

In addition to Wi-Fi and Bluetooth, the Era 100 also supports line-in playback via an optional 3.5mm to USB-C adapter. —Sheena Vasani, The Verge, 21 Nov. 2024

Member Keven Ellis, R-Lufkin, said questions on religion are up to the courts to decide and questions over curriculum appropriateness should be up to school districts, especially since the materials are optional. —Keri Heath, Austin American-Statesman, 19 Nov. 2024

Word History

First Known Use

1765, in the meaning defined above

Kids Definition

optional

adjective

op·​tion·​al ˈäp-shnəl 

-shən-ᵊl

: left to one's choice : not required

optional equipment on a new car

optionally

-ē

adverb