splenetic

Bad-tempered, irritable, peevish, spiteful, habitually angry.

A sect, whose chief devotion lies / In odd perverse antipathies; / […] / More peevish, cross, and splenetick, / Than dog distract, or monkey sick.

Horace seems to have purg'd himself from those Splenetick Reflections in those Odes and Epodes, before he undertook the Noble Work of Satires; which were properly so call'd.

Related to the spleen.

I have already described the general protuberance of the abdomen among the children throughout the Messaria and the Carpas districts, all of whom are more or less affected by splenetic diseases.

A person affected with spleen.