The word problem was optional.
the homework we had today was optional because we were really good in school today ......but still everyone did it
The math question was optional, but every one did it.
Bucket seats are an optional feature on this model.
He delivered an eloquent speech at the conference, captivating the audience with his articulate words and persuasive arguments.
The word optional is an adjective, a word that describes a noun (optional equipment).The verb is to option (options, optioning, optioned). Example:The studio will make an offer to option his latest novel.
The word 'optional' is the adjective form for the noun option.
Votive means optional.
recommended but optional
Optional
optional
For something to be optional, it means the availability of choice/choices, to have alternatives. The opposite of optional is mandatory, compulsory, required.
optional unnecessary