Rich Halls famously coined Sniglet as
any word that doesn't appear in the dictionary, but should
Is there a word/short-phrase for a word that does exist, but shouldn't?
Examples:
He referred to the man by a term so vile, the word itself should be _____.
After six hours of listening to corporate double-speak, he came to regard every buzzword as a _____, invented simply to annoy him.
Best Answer
Your question seems to ask for an adjective (JEL's spurious not only works well but is fun to use), a verb, and a noun. Here are a verb and two nouns for your fill-in-the-blanks.
exorcise -- to get rid of something evil, troublesome, menacing, or oppressive -- http://www.merriam-webster.com/dictionary/exorcize
abomination -- something that causes disgust or hatred -- http://www.merriam-webster.com/dictionary/abomination (... and, often, thought of as a defilement of nature)
anathema -- someone or something intensely disliked or loathed -- http://www.merriam-webster.com/dictionary/anathema (... and, sometimes, just plain evil)