[1] : The Collaborative International Dictionary of English v.0.48

greedy \greed"y\ gr=ed"y^, a. compar. greedier
   -i^~er; superl. greediest. oe. gredi, as.
   gr=aedig, gr=edig; akin to d. gretig, os. gr=adag, ohg.
   gr=atag, dan. graadig, osw. gradig, gradig, icel.
   gr=aethugr, goth. gr=edags greedy, gr=ed=en to be
   hungry; cf. skr. g.rdh 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
see also:
greedier greediest greed. greedy 

[2] : WordNet (r) 2.0

greedy
     adj 1: immoderately desirous of acquiring e.g. wealth; "they are
            avaricious and will do anything for money"; "casting
            covetous eyes on his neighbor's fields"; "a grasping
            old miser"; "grasping commercialism"; "greedy for
            money and power"; "grew richer and greedier";
            "prehensile employers stingy with raises for their
            employees" syn: avaricious, covetous, grabby, grasping,
             prehensile
     2: often followed by `for' ardently or excessively desirous;
        "avid for adventure"; "an avid ambition to succeed";
        "fierce devouring affection"; "the esurient eyes of an
        avid curiosity"; "greedy for fame" syn: avid, devouringa,
         esurient
     3: wanting to eat or drink more than one can reasonably
        consume; "don't be greedy with the cookies"
     also: greediest, greedier
see also:
avaricious covetous grabby grasping prehensile avid 
devouringa esurient greediest greedier 

[3] : 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

Greedy >> G Words
Greedy, definition of term: Greedy
greedy_pag1.html