The phrase "most singled-out" means the most targeted or highlighted. Its antonyms could be "unnoticed," "unremarkable," "unnoticed," or "overlooked." When something is unnoticed, it doesn't attract attention or recognition. When it is unremarkable, it is considered ordinary or average, and when it is overlooked, it is ignored or missed. Therefore, if someone or something is not singled-out, they are simply part of the crowd, not drawing any special attention. It's important to remember that antonyms can help to give a broader picture of a word's meaning and understanding them is crucial when it comes to effective communication.