Unrequired is an 11-letter word meaning UNNECESSARY or OPTIONAL. It is often used to describe something that is not necessary or required, such as a job or task that can be done without. UNNECESSARY is an 8-letter word with a similar meaning, and it is often used to describe something that is not needed or desired. OPTIONAL is also an 8-letter word with a similar meaning, and it is often used to describe something that is not mandatory but can be chosen if desired.