There are three principal kinds of lies among the ‘etymologies’ in Cassidy’s ridiculous book How The Irish Invented Slang.
As we have said before, there are many entries in Cassidy’s book which are plagiarised. Dozens of expressions were already in the public domain before they appeared in Cassidy’s book (though most of these are also fanciful and unlikely to be correct.) In most cases, the Great Fraud didn’t acknowledge where he got them. Examples: longshoreman from loingseoir, ballyhoo from bailiú, snazzy from snas, smashing from is maith sin, slug from slog, etc.
In many cases, Cassidy found individual words in English and English slang. He then hit the Irish dictionaries and tried to find words which were a vague match for his English words. So, suppose Cassidy had decided that the term to drink a toast to someone doesn’t have anything to do with toasted bread. So he hits the dictionary and finds the word tost, meaning silence. Well, you propose a toast and of course, everyone is silent while they’re drinking. So it’s from the Irish tost meaning silence.
However, Cassidy often changed his story. (Slum was originally from saol lom, according to Cassidy but in the book it’s from ‘s lom é.) So, suppose he was looking through a dictionary and happened to notice the word tóstal, meaning assembly, muster, array or pageant. And suppose Cassidy decided that this, not tost, is a better origin of toast. So, he writes a ‘dictionary definition’:
tóstal – assembly, muster, pageant; a public display (of respect etc.)
and then adds a few dictionary references, so that a casual observer might assume that this was taken verbatim from a dictionary. Of course, the really impressive bit, about the public display of respect, would be a complete fiction invented in California by a man who didn’t speak any Irish. (In reality, I made this example up using Cassidy’s ‘methodology.’)
Of course, if Cassidy had been restricted to plagiarism and words which accidentally have a phonetic similarity and some similarity of meaning, his book would have been little more than a pamphlet. Most of his ‘etymologies’ were phrases.
Here’s how it works. Cassidy finds the word bamboozle and decides it must be Irish. So, he hits the Irish dictionaries and looks for something that corresponds to it. Of course, there’s no suitable Irish word. So, this pretentious dimwit – who doesn’t speak any Irish at all – cobbles together a ‘well-known phrase’ in Irish. First, he finds the word bamba, which means tiresomeness or frustration. So far, so good. But what about the oozle? So, he looks in the dictionary and finds uasal, which means noble, but also has a subsidiary meaning of ‘fairy’. Great! In ‘Irish’, bamba uasal is a phrase meaning frustrated by the fairies, thwarted by supernatural forces.
Of course, it doesn’t mean that. It doesn’t exist. I just made it up ten minutes ago as an example of how Cassidy’s mind didn’t work. There are hundreds of similar expressions in Cassidy’s book: uath dubh; gus óil; gruaim béil; gearr-ól úr etc. etc.
I note with great sadness that people are still spreading this nonsense. For example, a couple of weeks ago, someone called Glopweiller (or Daniel Patrick Galvi) put a reference to Cassidy’s dumbass theory about the origins of dude on Twitter. There is a lot of talk at the moment about the post-truth world we live in. The fact is, it’s only post-truth if we decide to let that happen, by ignoring the facts and not checking them. I suggest we make that an additional New Year’s resolution – to check every fact, however trivial, before passing it on and contributing to the morass of ignorance out there.