Synonyms for Rapacity (same or very similar meaning)
WordNet sense 1 (extreme gluttony):
rapaciousness, voraciousness, voracity, edacity, esurienceWordNet sense 2 (reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins)):
avarice, covetousness, greed, avaritiaFrom the ODE community, based on WordNetadd/edit