A client frequently receives unwanted traffic from Google. They do not wish to receive these visitors, mainly because they want not to deal with them through their support channels. So they asked for a way how not to rank for specific keywords.
What I am looking for is something like a personal blacklist for specific keywords. Maybe in Google Search Console? Or something like
<meta name="keyword-noindex"> :)
To my knowledge there simply is no such way. But just to sure, I'd like to ask you experts. :)
If there is indeed such a way, I would also like to know if there are possible unwanted side effects. For example, could it hurt unrelated rankings?
To be clear: I am already going to recommend improving title and description to improve the targeting. And obviously we'll make sure not to accidentally optimize for those keywords by making sure that they are wiped from the site. Due to some ambiguity this is not expected to be perfect, though. So to be thorough I am looking for more direct measures.