Ough is a four-letter sequence, a tetragraph, used in English orthography and notorious for its unpredictable pronunciation. It has at least eight pronunciations in North American English and nine in British English, and no discernible patterns exist for choosing among them.

History

In Middle English, ough was regularly pronounced with a back rounded vowel and a velar fricative (e.g.,, , or ).

List of pronunciations

Slough has three pronunciations, depending on its meaning: The town of Slough in the Thames Valley of England is. An example sentence using the nine pronunciations commonly found in modern usage (and excluding hough, which is now a rarely used spelling) is, "The wind was rough along the lough as the ploughman fought through the snow, and though he hiccoughed and coughed, his work was thorough." Another, slightly shorter example would be, "The rough, dough-faced ploughman fought through the borough to the lough, hiccoughing and coughing." Other pronunciations can be found in proper nouns, many of which are of Celtic origin (Irish, Scottish or Welsh) rather than English. For example, ough can represent in the surname Coughlin, in Ayscough, and in the name Colcolough in the United States. The two occurrences of ⟨ough⟩ in the English place name Loughborough are pronounced differently, resulting in. Additionally, three parishes of Milton Keynes—Woughton, Loughton and Broughton — have different pronunciations of the combination. Tough, though, through and thorough are formed by adding another letter each time, yet none of them rhyme (in American English, however, though and thorough both have ). Some humorous verse has been written to illustrate this seeming incongruity:

Spelling reforms

Because of the unpredictability of the combination, many English spelling reformers have proposed replacing it with more phonetic combinations, some of which have caught on in varying degrees of formal and informal success. Generally, spelling reforms have been more widely accepted in the United States and less so in other English-speaking areas. One problem is that a pronunciation with the velar fricative is still found locally in parts of North-East Scotland, where, for example, trough is pronounced. In 18th century British English, before the cheap Penny Post and while paper was taxed, the combination ough was occasionally shortened to ô when the gh was not pronounced, to save space: thô for though, thorô for thorough, and brôt for brought. In April 1984, at its yearly meeting, the Simplified Spelling Society adopted the following reform as its house style:

Notes and references