A more thorough explanation:

Definition: Sub rosa is a Latin term that means "under the rose." It refers to something that is confidential, secret, or not meant for publication.

• The company's new product launch was discussed sub rosa at a private meeting.
• The government's negotiations with foreign leaders were conducted sub rosa to avoid public scrutiny.

These examples illustrate how sub rosa is used to describe something that is kept secret or confidential. In the first example, the company's new product launch was discussed sub rosa, meaning that the details were not meant to be shared with the public or competitors. In the second example, the government's negotiations were conducted sub rosa to avoid public scrutiny, indicating that the discussions were kept confidential to prevent any negative reactions from the public or other countries.