optional.
Not compulsory; left to personal choice; elective.
Meaning & usage
Not compulsory; left to personal choice; elective.
On that beach clothing is entirely optional.
Where this word comes from
From option + -al.
Something that is not compulsory, especially part of an academic course.
In various programming languages, a kind of variable that is assigned a specific data type but may or may not hold an actual value.
Where this word comes from
From option + -al.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.