A commonly mistyped example of the more commonly known unfortunate. But it means basically the same thing. And if you couldn't get that from context then, well, you should be pretty concerned.
Katrina ment to say that her friend's shoulder hurting was unfortunate, but she mispelled it infortunate. But, due to his superb intelligence, he still got the general meaning.
by KittyKat2011 October 10, 2010