Dictionary
4 ENTRIES FOUND:

optional

adjective op·tion·al \ˈäp-shnəl, -shə-nəl\

: available as a choice but not required

Full Definition of OPTIONAL

:  involving an option :  not compulsory
op·tion·al·i·ty \ˌäp-shə-ˈna-lə-tē\ noun
op·tion·al·ly adverb

Examples of OPTIONAL

  1. Jackets are required at the restaurant, but ties are optional.
  2. Many optional features are available on this car.
  3. Registration is optional, not mandatory.

First Known Use of OPTIONAL

1765

Browse

Next Word in the Dictionary: optionalizePrevious Word in the Dictionary: option (verb)All Words Near: optional
March 26, 2015
verdigris Hear it
A green deposit formed on some metals
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears