The Collaborative International Dictionary of English v.0.48:

Greedy \Greed"y\ (gr[=e]d"[y^]), a. [Compar. Greedier
   (-[i^]*[~e]r); superl. Greediest.] [OE. gredi, AS.
   gr[=ae]dig, gr[=e]dig; akin to D. gretig, OS. gr[=a]dag, OHG.
   gr[=a]tag, Dan. graadig, OSw. gradig, gr[*a]dig, Icel.
   gr[=a][eth]ugr, Goth. gr[=e]dags greedy, gr[=e]d[=e]n to be
   hungry; cf. Skr. g[.r]dh to be greedy. Cf. Greed.]
   1. Having a keen appetite for food or drink; ravenous;
      voracious; very hungry; -- followed by of; as, a lion that
      is greedy of his prey.
      [1913 Webster]

   2. Having a keen desire for anything; vehemently desirous;
      eager to obtain; avaricious; as, greedy of gain.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

104 Moby Thesaurus words for "greedy":
   Apician, a hog for, acquiring, acquisitive, all-devouring,
   ambitious for self, autistic, avaricious, avid, bolting,
   bottomless, careerist, close, cormorant, coveting, covetous,
   cramming, crapulent, crapulous, craving, desirous, devouring,
   edacious, egotistical, esurient, glutting, gluttonizing,
   gluttonous, gobbling, gorging, grabby, grasping, gulping, guttling,
   guzzling, hoggish, hyperphagic, individualistic, insatiable,
   insatiate, intemperate, itchy, limitless, materialistic, mean,
   mercenary, mingy, miserly, money-hungry, money-mad, narcissistic,
   near, niggardly, omnivorous, overgreedy, parsimonious,
   penny-pinching, penurious, personalistic, piggish, polyphagic,
   possessive, prehensile, privatistic, quenchless, rapacious,
   ravening, ravenous, remote, self-absorbed, self-admiring,
   self-advancing, self-besot, self-centered, self-considerative,
   self-contained, self-devoted, self-esteeming, self-indulgent,
   self-interested, self-jealous, self-occupied, self-pleasing,
   self-seeking, self-serving, self-sufficient, selfish, slakeless,
   sordid, stingy, stuffing, swinish, tight, tight-fisted,
   unappeasable, unappeased, unquenchable, unsated, unsatisfied,
   unslakeable, unslaked, venal, voracious, wolfing