Suggested by Jennysbooks:
Something I’ve been thinking about lately: “What words/phrases in a blurb make a book irresistible? What words/phrases will make you put the book back down immediately?”
I usually don't read book blurbs, and if I do, I skim them just enough to see if anything about the book looks interesting. I prefer to know as little as possible about a book before reading it. This way, I don't have any preconceived ideas or expectations about the book.
So, to actually answer the question, I don't think there is a specific word or phrase that catches my eye. If I am browsing a store for a book, a stunning cover is much more likely to catch my eye.
On the other hand, if a description includes any words hinting at a bodice ripper, it goes back right away. I don't mind a little romance or sex in the books I read, but I don't want that to be the focus. The good thing is, you can usually stay away from these books by the cover alone!