Standard Lemma guide

optional

adj · noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈɒp.ʃə.nəl/
  • General-American: /ˈɑp.ʃə.nəl/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: AA1 P SH AH0 N AH0 L Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: AO1 P SH AH0 N AH0 L Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Not compulsory; left to personal choice; elective.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Examples

  • On that beach clothing is entirely optional.

Meaning relationships

Synonyms: facultative

Antonyms: compulsory, mandatory, necessary, obligatory, binding, compulsatory, decretory, forced, imperative, involuntary, nonoptional, required, unbewised, unvoluntary

2

noun

Meaning 2

Something that is not compulsory, especially part of an academic course.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

In various programming languages, a kind of variable that is assigned a specific data type but may or may not hold an actual value.

Definition source: English Wiktionary via Wiktextract

Usage: capitalized, sometimes

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, programming, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adjective

Meaning 4

possible but not necessary; left to personal choice

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: obligatory

History

Etymology

From option + -al.

Across languages

Translations

85 source translations are retained for this English entry.

  • Afrikaans: opsioneel — not compulsory
  • Arabic: اِخْتِيَارِيّ (iḵtiyāriyy) — not compulsory
  • Armenian: կամընտիր (kaməntir) — not compulsory
  • Armenian: ոչ պարտադիր (očʻ partadir) — not compulsory
  • Belarusian: неабавязко́вы (njeabavjazkóvy) — not compulsory
  • Belarusian: факультаты́ўны (fakulʹtatýwny) — not compulsory
  • Belarusian: апцыяна́льны (apcyjanálʹny) — not compulsory
  • Bengali: ঐচ্ছিক (ōicchik) — not compulsory
  • Bengali: নফল (nophol) — not compulsory
  • Bulgarian: незадължителен (nezadǎlžitelen) — not compulsory
  • Bulgarian: по избор (po izbor) — not compulsory
  • Catalan: opcional — not compulsory
  • Czech: volitelný — not compulsory
  • Danish: valgfri — not compulsory
  • Danish: frivillig — not compulsory
  • Dutch: optioneel — not compulsory
  • Finnish: valinnainen — not compulsory
  • French: optionnel — not compulsory
  • French: facultatif — not compulsory
  • Georgian: ნებაყოფლობითი (nebaq̇oplobiti) — not compulsory
  • Georgian: არასავალდებულო (arasavaldebulo) — not compulsory
  • Georgian: ფაკულტატიური (paḳulṭaṭiuri) — not compulsory
  • Georgian: ფაკულტატური (paḳulṭaṭuri) — not compulsory
  • Georgian: დისკრეციული (disḳreciuli) — not compulsory
  • Georgian: დისპოზიტიური (disṗoziṭiuri) — not compulsory
  • German: freiwillig — not compulsory
  • German: optional — not compulsory
  • German: wahlfrei — not compulsory
  • German: fakultativ — not compulsory
  • German: freigestellt — not compulsory
  • German: wahlweise — not compulsory
  • German: nicht zwingend vorgeschrieben — not compulsory
  • German: nicht zwingend erforderlich — not compulsory
  • Greek: προαιρετικός (proairetikós) — not compulsory
  • Greek: κατ’ εκλογήν (kat’ eklogín) — not compulsory
  • Hindi: वैकल्पिक (vaikalpik) — not compulsory
  • Hungarian: választható — not compulsory
  • Hungarian: fakultatív — not compulsory
  • Hungarian: tetszőleges — not compulsory
  • Hungarian: elhagyható — not compulsory
  • Hungarian: opcionális — not compulsory
  • Icelandic: valfrjáls — not compulsory
  • Italian: facoltativo — not compulsory
  • Italian: volontario — not compulsory
  • Italian: opzionale — not compulsory
  • Latin: facultativus — not compulsory
  • Norwegian Bokmål: valgfri — not compulsory
  • Norwegian Bokmål: frivillig — not compulsory
  • Norwegian Bokmål: fakultativ — not compulsory
  • Norwegian Nynorsk: valfri — not compulsory
  • Norwegian Nynorsk: friviljug — not compulsory
  • Norwegian Nynorsk: frivillig — not compulsory
  • Norwegian Nynorsk: fakultativ — not compulsory
  • Persian: اختیاری (extiyâri) — not compulsory
  • Polish: opcjonalny — not compulsory
  • Polish: fakultatywny — not compulsory
  • Portuguese: opcional — not compulsory
  • Portuguese: facultativo — not compulsory
  • Russian: необяза́тельный (neobjazátelʹnyj) — not compulsory
  • Russian: факультати́вный (fakulʹtatívnyj) — not compulsory
  • Russian: опциона́льный (opcionálʹnyj) — not compulsory
  • Serbo-Croatian: изборно — not compulsory
  • Serbo-Croatian: изборан — not compulsory
  • Serbo-Croatian: изборна — not compulsory
  • Serbo-Croatian: izborno — not compulsory
  • Serbo-Croatian: izboran — not compulsory
  • Serbo-Croatian: izborna — not compulsory
  • Spanish: opcional — not compulsory
  • Swedish: valfri — not compulsory
  • Swedish: valfritt — not compulsory
  • Swedish: frivillig — not compulsory
  • Swedish: frivilligt — not compulsory
  • Swedish: fakultativ — not compulsory
  • Swedish: fakultativt — not compulsory
  • Swedish: volontär — not compulsory
  • Tigrinya: ኣማራጽያዊ (ʾamaraṣyawi) — not compulsory
  • Turkish: ihtiyari — not compulsory
  • Turkish: isteğe bağlı — not compulsory
  • Turkish: istemli — not compulsory
  • Turkish: opsiyonel — not compulsory
  • Turkish: opsiyonlu — not compulsory
  • Ukrainian: необов'язко́вий (neobovʺjazkóvyj) — not compulsory
  • Ukrainian: факультати́вний (fakulʹtatývnyj) — not compulsory
  • Ukrainian: опціона́льний (opcionálʹnyj) — not compulsory
  • Yiddish: ברירהדיק (breyredik) — not compulsory
Real reading context

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