a. having no known name or identity or known source
s. not known or lacking marked individuality
a. 姓氏不详的, 无名的, 无特色的
[计] 无记录
1. The letter was signed by an anonymous writer.
这封信是由一位匿名作者签名的。
2. She received an anonymous gift on her birthday.
她在生日时收到了一个匿名礼物。
3. The feedback was given anonymously to ensure honesty.
为了确保诚实，反馈是匿名提供的。