Focus and Attention:
* Obscurity: Being unknown or unnoticed.
* Anonymity: Lacking a public identity or recognition.
* Background: Being in the shadows or not the main focus.
* Unnoticed: Not drawing attention or being ignored.
Glory and Fame:
* Humility: Being modest and unassuming.
* Obscure: Not being famous or well-known.
* Unremarkable: Being ordinary and not standing out.
* Mediocrity: Being average or unremarkable.
Other Possible Antonyms:
* Privacy: Avoiding public attention or fame.
* Silence: Avoiding the spotlight or being quiet.
* Quietude: Being calm and peaceful, away from the hustle and bustle.
* Isolation: Being alone and separated from others.
The best antonym for "limelight" will depend on the specific meaning and context you are trying to convey.