匿名 (nì míng): Anonymous / anonymity (Verb) — Meaning & Stroke Order

He wrote a letter anonymously.

To protect the whistleblower, we will never disclose their identity and will handle the matter with strict anonymity.

Although he received an anonymous warning letter, he did not change his decision because of it.

This anonymous tip prompted the company to investigate internal issues.

Discussing this topic anonymously on the forum actually allows everyone to speak their minds more freely.