-ough is indeed a complex English word going back past Middle English (Chaucer) to Old English (Beowulf - closer to German than modern English) and -ough continues to evolve. I would have trouble thinking of a more difficult example of phonetic differentiations mapped to the same English suffix. Here is the expanded list of wildly different pronunciations of -ough:
  • Though
  • Through
  • Thorough
  • Rough
  • Plough
  • Cough
You are brightening my evening! I’m sorry I don’t have enough sats to zap all your knowledge drops!
From my Word document: Rules for spelling and pronouncing English vocabulary often go out the window due to an amalgamation of roots in Germanic and Latin languages — “ough” in English has at least six different pronunciations depending on the word! (Try saying “tough,” “through,” “plough,” “cough,” “dough” and “fought” in a row)
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