I was stuck on this too - the answer is VOTIVE. Thanks to another 'puzzler'
Votive
Votive means optional.
No, it is not. It is an adjective meaning not required, or available outside the usual configuration or package.
meaning of e-mail?
recommended but optional
Spherical is the adjective meaning ball-shaped. Globular is another possible adjective with a similar meaning.
No, fair is an adjective, meaning okay or passable. Fare is a noun, meaning a payment.
'Elude' is a verb. Therefore it has no meaning as an adjective, since it isn't one.
The word meaning "with constant frequency" is an adjective. The word meaning "a frequent customer" is a noun.
The word separated can be used as an adjective, meaning "detached", or as a verb, meaning "broken apart".
It can be an adjective meaning disgusting or smelly. It can also be a noun meaning an infraction, as in some sports.
Palatial is an adjective meaning resembling a palace.