Synonyms for

Optional

Verb / ˈɑ:pʃʌnʌl / / ˈɔ:pʃʌnʌl / Another word for optional — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

Definition

Optional means something that is not required, but you can choose to have it or not.

Synonyms & similar words

obligatory voluntary elective discretionary noncompulsory nonmandatory unrequired permissive facultative open uncompelled unforced unobligatory nonobligatory unnecessary extra spare supplementary ancillary secondary

Synonyms by register

Formal

discretionary elective contingent

Informal

up to you your call whatever if you want

Literary

ad libitum at will

Antonyms

mandatory required compulsory obligatory necessary essential unavoidable

Common collocations

  • optional extra
  • optional equipment
  • optional purchase
  • optional feature
  • optional module
  • optional subject
  • optional upgrade

Word family

noun option
adverb optionally

Usage note

Often used to describe choices or additions that are not required but are available. Can sometimes imply a lack of importance if used carelessly.

Example sentences

  1. Reading a book is optional, but it is good for your brain.
  2. You can add whipped cream on top of your hot chocolate, but it is optional.
  3. Wearing a hat is optional, but it can protect you from the sun.
  4. Taking a nap is optional, but it can help you feel rested.
  5. Doing homework is optional, but it can help you learn.

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