So-called (adjective)

1. Referred to by a particular name or term, especially one that is inaccurate or misleading.
2. Claimed or reputed to be or have a certain quality or identity.

Origin:

Late 19th century: from so + called.

Examples:

1. The so-called expert was exposed as a fraud.
2. The so-called miracle cure turned out to be a scam.
3. The so-called solution caused more problems than it solved.
4. He is a so-called genius who can't even tie his own shoes.
5. The so-called model was anything but an example of good behavior.