'Greed' in psychology is an excessive desire to acquire or possess more than what one needs or deserves, especially with respect to material wealth.

For Graham, an unhealthy diet stimulated excessive sexual desire which irritated the body and caused disease.

Greed is an excessive desire to possess wealth or goods with the intention to keep it for one's self.

In their view, he was "diverted from his highest political duty" by "an excessive desire to build and an ever-increasing search to free his personality."

In Christian religions, it is considered a sin because of the excessive desire for food, and its withholding from the needy.

However, greed (as seen by the church) is applied to a very excessive or rapacious desire and pursuit of material possessions.

In Mr Lai's case,' the doctor continued, 'I suppose you might say he was killed by an excessive desire to improve.

Clement of Alexandria, who lived at the close of the second century, says: "From its use arise excessive desires and licentious conduct.

The male is the active participant, and must rid himself of his excessive desires by rutting with many different females.

(This in contrast to covetousness, the excessive desire to have things like money.)