The Collaborative International Dictionary of English v.0.48:

Greed \Greed\ (gr[=e]d"), n. [Akin to Goth. gr[=e]dus hunger,
   Icel. gr[=a][eth]r. [root]34. See Greedy.]
   An eager desire or longing; greediness; as, a greed of gain.
   [1913 Webster]

WordNet (r) 3.0 (2006):

greed
    n 1: excessive desire to acquire or possess more (especially
         more material wealth) than one needs or deserves
    2: reprehensible acquisitiveness; insatiable desire for wealth
       (personified as one of the deadly sins) [syn: avarice,
       greed, covetousness, rapacity, avaritia]

Moby Thesaurus II by Grady Ward, 1.0:

99 Moby Thesaurus words for "greed":
   acedia, acquisitiveness, anger, autism, avarice, avariciousness,
   avaritia, avidity, avidness, careerism, covetousness, crapulence,
   crapulency, craving, cupidity, deadly sin, edacity, ego trip,
   egotism, envy, frenzy of desire, fury of desire, gluttonousness,
   gluttony, grasping, graspingness, greediness, gula, gulosity,
   hoggishness, hyperphagia, incontinence, individualism,
   inordinate desire, insatiability, insatiable desire, intemperance,
   intemperateness, interest, invidia, ira, itching palm, lust,
   luxuria, meanness, miserliness, narcissism, niggardliness,
   omnivorousness, overeating, overgreediness, overindulgence,
   parsimony, penny-pinching, penuriousness, personal aims,
   personal ambition, personal desires, personalism, piggishness,
   polyphagia, possessiveness, pride, privatism, rapaciousness,
   rapacity, ravenousness, remoteness, self-absorption,
   self-admiration, self-advancement, self-centeredness,
   self-consideration, self-containment, self-devotion, self-esteem,
   self-indulgence, self-interest, self-interestedness, self-jealousy,
   self-occupation, self-pleasing, self-seeking, self-serving,
   self-solicitude, self-sufficiency, selfishness, selfism, sloth,
   sordidness, stinginess, superbia, swinish gluttony, swinishness,
   voraciousness, voracity, wolfishness, wrath, yearning