`丧偶` is used almost exclusively in formal written or spoken contexts. Its tone is objective and detached.
Official and Legal Contexts: This is the most common usage. You will see `丧偶` as an option on census forms, hospital intake forms, legal documents, and surveys under the category of “Marital Status” (婚姻状况), alongside “unmarried” (未婚), “married” (已婚), and “divorced” (离异).
News and Academia: Journalists and sociologists use `丧偶` when reporting on statistics or discussing social issues, such as “support systems for the widowed elderly” (对丧偶老人的支持系统).
Informal Conversation: Avoid using this term directly with someone who has been widowed. It is considered extremely blunt, insensitive, and inappropriate for expressing condolences. Instead, use softer, more empathetic language like `节哀顺变 (jié'āi shùnbiàn)` (restrain grief and accept the change) or refer to the deceased respectfully, e.g., `[Name] 去世了 ([Name] qùshì le)` - “[Name] has passed away.”