The technical definition is as follows:
adjective – 1. enduring injury, trouble, or provocation long and patiently.
I know a lot of people who suffer a long time with their burdens. They don’t particularly wish to change, even if they have the time and means. They are content to stay where they are and never change a thing. I used to be that way. I endure only because, in order to change the way I want my life to be, it will cost me money. The change I want to happen is to take myself completely out of my comfort zone and start a new life in a new town. Alas, no money. I’m not a fool.
I suppose long-suffering could be applied to people who aren’t selfish enough to care about themselves. They care too much about how other people will react to their path in life that they don’t do a thing, even if they’re supremely unhappy. I see this a lot in families. Unfortunately, when you become a mother or a father, you can’t be selfish anymore.