For some time now, some of my on-line friends have advised me to provide a version of CassidySlangScam without the invective aimed at Cassidy and his supporters. In response to that advice, I am working on providing a glossary of the terms in Cassidy’s ludicrous book How The Irish Invented Slang with a short, simple and business-like explanation of why Cassidy’s version is wrong.
The word hoax has a well-established origin in English. Hoax derives from an earlier word hocus, which meant to confuse, befuddle, drug or trick someone. Hocus almost certainly derives from hocus pocus, a garbled version of Latin hoc est corpus. Hocus has been around for hundreds of years, while hoax is more recent.
Cassidy doesn’t accept this. He prefers a derivation from the Irish olcas, which is pronounced olkass. (Not holkas) It doesn’t sound much like hoax. And does it mean the same thing as a hoax? No, it means badness or wickedness. Hoaxes are sometimes evil and wicked. Sometimes they are just playful. But they always involve the notion of dishonesty, of tricking people. In Irish, the words bob (as in bob a bhualadh ar dhuine, to play a practical joke on someone) or cleas (as in cleas a imirt ar dhuine, to play a trick on someone) would be the usual words for hoax. Not olcas. I should also point out that olcas is an abstract noun, not an adjective as Cassidy states.