optional

Adjective

 * 1) Not compulsory; left to personal choice; elective.

Translations

 * Afrikaans: opsioneel
 * Arabic: اِخْتِيَارِيّ
 * Armenian: կամընտիր, ոչ պարտադիր
 * Belarusian: неабавязко́вы, факультаты́ўны, апцыяна́льны
 * Bengali: ,
 * Bulgarian:, по избор
 * Catalan: opcional
 * Czech: volitelný
 * Danish: ,
 * Dutch:
 * Finnish:
 * French: ,
 * Georgian: ნებაყოფლობითი, არასავალდებულო, ფაკულტატიური, ფაკულტატური, დისკრეციული, დისპოზიტიური
 * German:, , , , , , nicht zwingend vorgeschrieben, nicht zwingend erforderlich
 * Greek:, κατ' εκλογήν
 * Hindi:
 * Hungarian:, , , ,
 * Icelandic: valfrjáls
 * Italian:, , , ,
 * Latin: facultativus
 * Norwegian:
 * Bokmål:, frivillig, fakultativ
 * Nynorsk: valfri, friviljug, frivillig, fakultativ
 * Persian:
 * Polish: opcjonalny,
 * Portuguese: ,
 * Russian:, ,
 * Serbo-Croatian:
 * Cyrillic: изборно, изборан, изборна
 * Roman:, ,
 * Spanish:
 * Swedish:, , , , , ,
 * Tigrinya: ኣማራጽያዊ
 * Turkish:, isteğe bağlı, , opsiyonel,
 * Ukrainian: необов'язко́вий, факультати́вний,
 * Yiddish: ברירהדיק

Noun

 * 1) Something that is not compulsory, especially part of an academic course.
 * 2)  In various programming languages, a kind of variable that is assigned a specific data type but may or may not hold an actual value.

Adjective

 * 1) optional

Etymology
.

Noun

 * 1)  accessory
 * 2) handicap (horse racing)