Most adjectives are shapeless, gray, boring. Those tired three serve as a twenty-four carat example.
A couple of my new favorite adjectives (though I will superhumanly fight against their overuse) are: sadicidal, or gloomicidal; words which describe the murder of sadness or gloom. D’uh!
I’ve been giving some Herculean thought to sexceptional adjectives that I can use spice up my dishwater writing. I have found that sometimes you just have to make that shit up, just like the rest of the fiction you’re slapping madly on the page.
For extra fresh reading pleasure, I suggest this blog post on Sin and Syntax.
A couple of books for you to check out on the subject: