The faculty of appetite is sometimes referred to as desire or concupiscence. It refers to the fact that each individual feels a lack of something within himself. To address this emptiness, he turns elsewhere for fulfillment. When he turns to the world his hunger is said to be misdirected, and he goes unsatisfied. But when he turns to God, his faculty of appetite realizes its God-given function.
is the hunger, craving, desire, taste, ravenousness, sweet tooth, thirst, penchant, or passion we experience. When we have an appetite for something, we don't find it revulsive, repulsive, or distasteful.
The appetite is the desire to eat food, felt as hunger. Appetite exists in all higher lifeforms, and serves to regulate adequate energy intake to maintain metabolic needs. It is regulated by a close interplay between the digestive tract, adipose tissue and the brain.