A professed belief is one that someone has made known.

She is a professed monarchist. 她公开声明拥护君主制度。

used to refer to a belief or feeling that someone says they have or feel, but is probably not sincere

His professed love of women seems a little odd when you consider how he treats them. 想想他是怎么对待妇女的，他自称爱她们，真有点可笑。