covetous, greedy, acquisitive, grasping, avaricious mean having or showing a strong desire for especially material possessions.

covetous implies inordinate desire often for another's possessions.

greedy stresses lack of restraint and often of discrimination in desire.

acquisitive implies both eagerness to possess and ability to acquire and keep.

grasping adds to covetous and greedy an implication of selfishness and often suggests unfair or ruthless means.

avaricious implies obsessive acquisitiveness especially of money and strongly suggests stinginess.