optional

word

Definition

Something that is not required; you can choose to do it or not.

Usage & Nuances

Usually used in formal or neutral contexts, like forms, courses, or activities. Common collocations: 'optional course', 'optional extra', 'optional feature'. Not for things that are necessary.

Example Sentences

The survey question about your age is optional—you don't have to answer it.

natural

Parking is optional, so you can take the bus if you prefer.

natural

Taking the art class is optional.

basic

Bringing your own lunch is optional at the picnic.

basic

Wearing a tie is optional at the party.

basic

Most of the app's features are free, but there are some optional extras you can pay for.

natural