Swansong is a term that is typically used to describe someone's final act or performance before retirement or resignation. Synonyms for swansong include farewell, curtain call, final act, last hurrah, last performance, grand finale, final bow, and final goodbye. Each word represents the final moments or actions of a person's career, and each has its nuances and connotations. While the term swansong might have a slightly melancholic tone, the synonym "farewell" might have a more bittersweet or nostalgic feeling to it. Similarly, "curtain call" might evoke the image of a standing ovation, while "grand finale" might suggest a more dramatic and climactic end.