If you think all dashes and
hyphens are interchangeable, you’re mistaken, my friend—sadly mistaken. You need to learn yesterday about the differences among these marks of punctuation.
I’m here today to tell you about how to use the hyphen, the en dash and the em
dash.
The hyphen (-) is the easy
one. It’s the short dash you make with one stroke of your keyboard. The hyphen
appears at the end of a line of text when the last word stretches beyond that
line. You would also use a hyphen for compound adjectives, especially before a
noun. Examples of this include “state-of-the-art cattle prod,” “93-year-old
mime” or “post-orchiectomy.” You would also use a hyphen in a hyphenated last
name, like Manigault-Newman.
An em dash (—) is the
longest dash. You can keep this and the en dash straight because an m is wider
than an n and so an em dash is wider than an en dash. You would use this mostly
to separate one clause from another in a dramatic way, sometimes without a
conjunction, or to join two separate sentences. For example, “He swallowed the
poison—and died.” You’d also use an em dash as an appositive when the sentence
already contains serial commas. For example, “The colors of the American
flag—red, white and blue—are exceedingly lovely.”
On a Mac, make an em dash
by pressing shift+option+hyphen. I guess on a PC, it would be shift+alt+hyphen.
You can also type two hyphens on a PC and after you skip a space, the hyphens
become an em dash. Should you use a space before or after an em dash? I don’t
know if there’s a rule but I think it looks better with no space on either
side.
It is exceedingly important—pay attention to this—that you never use a
hyphen to join two clauses. This looks awful: “Hyphen use in this case is
wrong- dead wrong.” See how bad that looks? I read an article by a copy editor
describing her job and it used hyphens instead of em dashes throughout. If the
editor did it, I’m sure it was embarrassing for the writer. If the writer did
it herself, she’s not a very good copy editor.
The en dash (–) is a
little tricky and it’s one diacritic I never used much until recently. Use an
en dash for a range of numbers, like “Class, your assignment is to read The Art of the Deal pages 2–37.” Also
use it for a sports score, like “The Eagles beat the Patriots, 45–2.” An en
dash is also appropriate to separate two destinations, like
“Mumbai–Poughkeepsie flight” or when two separate names come together
temporarily in opposition or partnership, like “Palin–Hawking astrophysics
debate.” This is different from (or is it different than?) when one person has
a hyphenated name, which is—get this—hyphenated. I’ve seen some publications
use en dashes for compound adjectives but it doesn’t look right to me.
Type an en dash on a Mac by
hitting option+hyphen. I don’t know how to do this on a PC without searching
for special characters or those number pad codes nobody really uses. Is it just
option+hyphen?
OK, wanna read an example
of a hyphen, em dash and en dash in one sentence? “The Strunk–White award for
Best-Written Lecture About The Relative Values And Uses Of Barely
Distinguishable Horizontal Lines Of Type—an award now in its 45th
year, and voted on by an esteemed panel of Pulitzer-Prize winning writers—has
been awarded to Brian McCurdy by a score of 673–4.”
Any hyphen/dash dorks feel
free to correct me on the preceding, but I’m pretty arrogant in my
self-assurance.