0 used to describe a person who easily becomes angry or annoyed, or their behaviour : --
He launched into a splenetic rant about his colleagues.
There are poems about other poets he knew, sometimes splenetic in tone.
We should beware of such splenetic and frenetic reactions once oil has been found.
The inference is entirely unjust, is not based upon the facts and is merely splenetic.
It was petty, malevolent, spiteful, splenetic, and thoroughly disgraceful.
