Last night on Twitter, I made a comment that one of my clients purposely uses a word in his manuscript that he knows I loathe. It's been a running joke with us for years. It's always there, and when I come across it as I read I usually email him a giant scream that looks like this:

aieeeeeeeee!

of course that prompted several people to wonder what the word was.
And to offer up their own detested words:

Aside from grammatical errors (impacted; safety deposit box; laid down) do you have words that just annoy the bejeepers out of you?