ἐπιθυμία
Epithymia
The desiring faculty — longing in its raw form
Epithymia is the second of the three faculties of the soul — the source of desire, longing, and appetite. It's the part of you that reaches for things: food, comfort, beauty, pleasure, connection, God.
When functioning properly, epithymia is the faculty that draws you toward what is genuinely good — ultimately, toward God. The tradition describes eros (intense longing for the divine) as the highest expression of the desiring faculty. When distorted by the passions, epithymia becomes compulsive craving, addiction, lust, and greed — desire detached from its true object and fixed on substitutes.
The practical work is not to kill desire (an impossibility, and the tradition warns against attempting it) but to redirect it — gradually, through prayer and watchfulness, from the objects that cannot satisfy to the presence that can.