Came across a delightful word: “splenetic”
From the Chambers:
1. Of the spleen
2. Affected with spleen
3. Bad-tempered, irritable or irritated, peevish
It doesn’t roll off the tongue but rather is spit out of the mouth, like a whole clove left in the soup by a sadistic cook. I’m a bit splenetic that I’ve never heard the word used in reference to myself.