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.
According to Cassidy, the term ‘hoodoo’ derives from an Irish expression uath dubh, which according to Cassidy means:
Uath Dubh, (pron. h-úŏ doo): dark specter, evil phantom, a malevolent thing; horror, dread; a dark, spiky, evil-looking thing. Uath, n., a form or shape; a spectre or phantom; dread, terror, hate. Old Gaelic name for the hawthorn. Dubh, (pron. doo, duv), adj., dark; black; malevolent, evil; wicked; angry, sinister; gloomy, melancholy; strange, unknown.
(O’Donaill, 457, 1294; Dineen, 374, 1287; De Bhaldraithe, English-Irish Dictionary, 755; Dwelly, 988)
Looking at this list of dictionaries, you would think that Cassidy had actually found the phrase uath dubh recorded in one or all of them. In fact, no dictionary records the phrase uath dubh. Uath is in Ó Dónaill’s dictionary, where it is described as a literary term meaning fear or horror (for literary, read ‘old-fashioned’ or ‘not in current use.’) It is also given in Dineen, where it is defined as:
A form or shape, a spectre or phantom; dread, terror; hate.
It is not found in De Bhaldraithe, which is an English-Irish dictionary and seems to have been thrown in to make the list of references look more impressive. Dwelly is a Scottish Gaelic dictionary and therefore quite irrelevant in this context.
There is also another old-fashioned term uath, an entirely different word, which means the whitethorn bush.
So, the situation is this. The first part of Cassidy’s definition above (Uath Dubh, (pron. h-úŏ doo): dark specter, evil phantom, a malevolent thing; horror, dread; a dark, spiky, evil-looking thing) was invented by Cassidy. And not only is the supposed Irish source of ‘hoodoo’ not in any dictionary or any other source, Cassidy mixes up two quite separate words and throws in the adjective spiky for good measure because a whitethorn bush is spiky!
The real origins of hoodoo are unknown but there is no evidence that it is an Irish or Hiberno-English phrase.