The term "old bachelor" has long been used to describe an unmarried man, often in a negative or pejorative sense. However, there are many synonyms that can be used to describe someone in this situation without resorting to this tired and sexist label. Some options might include "confirmed bachelor," "unattached man," "single gentleman," or even "eligible bachelor" for someone who is seen as desirable to potential partners. Alternatively, one could simply use the person's name and avoid labeling them based on their relationship status altogether. Whatever phrasing is used, it's important to remember that being unmarried should not be a source of shame or derision.