There are a wealth of adjectives that start with "i." Intriguing, isn't it? If you're like most people, there are probably times when you search for the perfect descriptor, only to fumble around and come up with something far less powerful than you intended.
So, the next time you're looking to punch a point in your prose, why not insert an adjective that starts with "i?" There are plenty out there and many of them will illuminate your lines.