Cruel (and the derivatives thereof) is probably my favorite. I have to stop myself from overusing it. Radiate as well. I think I've used both those words in every single story I've written in the past few years.
Also: darkly, appropriate (verb form), particularly, feign, especially, sycophantic, intimate, adequate, vaguely, pleased/pleasing, increasingly, wildly, briefly, comely, conflate, eloquent, ephemeral, lilt, lithe, unravel, spectacularly, and surreptitious.
Oh my god and tremble, plainly, and
pocket. I absolutely adore the word pocket.
I just like words in general.