OT: Can't remember name of science fiction novel

[dmm]

geoschmo said:
How did the story refer to telepathics? ... You used the term "telepathic underground" in quotes. Is that because it was a phrase you remember being used specifically?

Geo: Thank you very much for your efforts. This has really exposed the weakness of databases. I don't remember the words used. Could have been anything you suggested, or it could have been "mentals" or "mentats" or something entirely different. Not necessarily telepath. And there was a special word for the few "telepaths" who could do all of the "telepathic" abilities. (Most people could only do one.) Similarly, I put "telepathic underground" in quotes to indicate that I was making up that word. I doubt seriously if that's what the author called it.