Avoiding Abuse of the Em Dash
Check out the graphic to the right. It’s proof that the Grammar & Spelling Police really exist somewhere between the pages of your dictionary, thesaurus and Chicago Manual of Style. I knew the little guys were in there, but to have proof is strangely satisfying. It’s like a confirmed Bigfoot sighting.
So what are these guys monitoring? With the exception of what might be sneaking up behind them, it seems they’re monitoring everything. But it seems they were hanging out at the virtual coffee house when the latest rash of em dash violations occurred because no one’s been cited. Yet. So in an effort to help you avoid being pulled over and potentially assaulted with wet typeset the next time they’re on patrol, I’m going to hit a couple of highlights on the use of the em dash, specifically how to avoid abusing your access to the handy little double-hyphen.
The em dash is used primarily to set off a complete “aside” clause within a sentence when commas either won’t work or are not as effective in setting the clause off. The Chicago Manual of Style states the em is used “to denote a sudden break in thought that causes an abrupt change in sentence structure.” (Chicago Manual of Style, sec. 5.106) The em, written as two consecutive dashes (–), should have no spaces between the first and last words of the clause they distinguish (i.e. The cat was a vile animal–affirming my preference for dogs–and was known for leaving hairballs in the heels of my shoes.) The em is also a stylistic approach that, when overused, annoys both editors and readers alike.
So when do you use the em dash? First, make sure that commas wouldn’t work just as effectively. If they will, use them. It’s less distracting to the reader. Second, if your thought is truly a “break in thought” in the sentence, try a pair of ems on for size. Do they fit? Does the sentence still read clearly? Is it evident that the em dashes are setting off the thought they embrace as separate? If the answer is yes to each of these questions, an em is very likely appropriate. Third, could you rewrite the sentence to avoid the use of the em dash altogether? If you can, you probably should. My general rule when I’m editing my own work is to use the em dash as sparingly as possible. It’s a very bad habit to give in to, using the em instead of considering the true structure of the sentence. It means that when you really do need the em dash to set off a distinctly separate thought within a sentence, your reader is going to be so desensitized to the little dashes that the thought you’re trying to emphasize will fall flat. I suppose you might consider it the grammatical equivalent of crying wolf once too often.
I’ll admit that I have no idea whether or not the Grammar & Spelling Police actually exist, but I’ve heard stories of writers disappearing after repeated grammar violations. Those writers are rarely heard from again, and those that return are never quite the same. Urban fantasy or suppressed reality? You tell me. Either way, why take a chance? Spare yourself the worry of citation and use the the em dash sparingly and effectively.
The query letter. It’s enough to strike fear into the heart of the brave. There’s so much information out there about

