
Apathy. Boredom. Torpor. Ennui.
Emma Bovary.
One of the most famous heroines of French literature might be considered the poster child for acedia. If you've never read Madame Bovary, you ought to. It's the story of what can happen when a person mistakes life for fiction and therefore has no authentic human relationships.
From Chapter IX, "Idle Dreams":
At the bottom of her heart she was waiting for something to happen. Like shipwrecked sailors, she turned despairing eyes upon the solitude of her life, seeking afar off some white sail in the mists of the horizon. She did not know what this chance would be, what wind would bring it her, toward what shore it would drive her... but each morning as she awoke, she hoped it would come that day; she listened to every sound, sprang up with a start, wondered that it did not come; then at sunset, always more saddened, she longed for the morrow.
From the beginning of July, she counted how many weeks there were to October, thinking that perhaps the Marquis d'Andervilliers would give another ball. But all September passed without letters or visits.
After the ennui of this disappointment, her heart once more remained empty and then the same series of days recommenced. So now they would thus follow one another, always the same, immovable and bringing nothing. Other lives, however flat, at least had the chance of some event... but nothing happened to her; God had willed it so! The future was a dark corridor, with its door at the end shut fast.
So... does anything ever happen to her? Plenty. But you'll have to find out for yourself. (Hint: the last thing that happens to her is really bad and really permanent.) One of the best books ever written in any language, and you can downloand it for free: http://www.online-literature.com/gustave-flaubert/madame-bovary/