How is it possible that “miscredit” is not a word? If someone is incorrectly credited with something, we should be able to say that she is miscredited. For example, Thomas Crapper is commonly miscredited with the invention of the modern toilet, and thus the word “crap” derives from Mr. Crapper’s name. In fact, the word crap pre-dates Mr. Crapper; it is of Middle English origin. Mr. Crapper did, however, advance flush toilets quite a bit with his invention of (and if any of my middle school students have stumbled upon my blog I’ll never hear the end of it) the ballcock, which is still in use in today’s toilets.