Patiently waiting suffering, while plotting revenge.
People filled with longanimity are clouded with a wisper inside the back of thier minds eating away at them. Revenge all the same is a form of vengance. Meaning They want some thing they couldn't have or had a chance and took it for granted threw it away and are filled with longanimity for thier own faults, but tend to plot on others because they are lost and un-happy for thier choices. thus leading me to believe that the water cannons was a good idea and the vengance needs to die not the people that crave it.
A propensity to patiently tolerate something unpleasant.
It took longanimity to overcome his insomnia.